BairesDev
  1. Solutions
  2. SaaS

SAAS DEVELOPMENT SERVICES

Build custom SaaS solutions with experts trusted by 1500+ companies.

Looking for a partner with proven SaaS expertise? Our SaaS development services power some of the world's leading platforms. Work with us to build scalable SaaS applications, modernize existing solutions, and accelerate product launches.

Leandro C.

Sr. SaaS Architect

Leandro C.

17 years of experience

Previous Client

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Renata V.

Sr. Backend Engineer

Renata V.

11 years of experience

Previous Client

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Ignacio F.

Sr. DevOps Engineer

Ignacio F.

9 years of experience

Previous Client

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Matías P.

Sr. API Architect

Matías P.

12 years of experience

Previous Client

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Tomás D.

Sr. Security Engineer

Tomás D.

16 years of experience

Previous Client

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Trusted by CTOs at 1500+ companies:

SAAS APP DEVELOPMENT SERVICES

No matter what you're building, we can help.

Our SaaS development services span the full product lifecycle, from design and architecture to post-launch optimization. Whether you're launching a new SaaS platform or scaling an existing one, we deliver the engineering expertise to move fast without accumulating technical debt.

  • Google Cloud Platform Partner
  • AWS Partner
  • ISO 27001 certified - Information Security Management System
  • SaaS Architecture & Strategy

    Most SaaS failures trace back to architecture decisions made too early or without enough context. We work with your product and engineering leaders to design multi-tenant systems that balance isolation, performance, and cost from day one.

    Our architects map tenant boundaries, define data partitioning strategies, and establish scaling patterns before code is written. This includes designing for horizontal scale, implementing tenant-aware caching, and building monitoring that tracks per-tenant resource consumption. You get a foundation that supports growth without expensive re-platforming.

  • Custom SaaS Application Development

    Generic frameworks and templates can't handle the complexity of enterprise SaaS product development. Our custom software development process is designed to address your specific business model, whether that's usage-based billing, tiered access, or complex hierarchies.

    Our teams use domain-driven design to isolate core business logic from infrastructure concerns. We implement feature flags for gradual rollouts, build admin interfaces for tenant management, and design APIs that support both internal services and external integrations. The result is a maintainable codebase that evolves with your product roadmap.

  • Multi-Tenant Architecture Development

    Building for multiple tenants means solving data isolation, resource allocation, and tenant customization without compromising security or performance. We design and implement multi-tenant systems using proven patterns—pooled databases with tenant identifiers, separate schemas per tenant, or fully isolated instances depending on your requirements.

    Our approach includes implementing row-level security, designing tenant-aware middleware, and building administrative tools for provisioning and deprovisioning. We also handle cross-tenant analytics and reporting while maintaining strict data boundaries. You get scalable multi-tenancy that meets both security and cost targets.

  • SaaS API Development & Integration

    APIs are the contract between your platform and everyone who builds on it. We design REST and GraphQL APIs with versioning strategies, rate limiting, and tenant-scoped authentication that support both internal microservices and external developers.

    Our teams implement webhook systems for event-driven integrations, build API gateways for centralized policy enforcement, and create developer portals with interactive documentation. We also handle integrations with third-party platforms like Stripe, SendGrid, and Twilio. This gives you extensibility without sacrificing stability.

  • SaaS Migration & Modernization

    Legacy on-premises applications weren't built for the multi-tenant, subscription-based model that today's market demands. Many businesses face challenges during migration including data loss and performance issues. We migrate monolithic systems to cloud-native SaaS architectures while maintaining business continuity.

    Our process includes extracting business logic into services, implementing tenant data models, and building billing and subscription management. We execute migrations incrementally, running old and new systems in parallel until validation passes. This reduces risk, preserves revenue, and positions you for faster feature delivery.

  • SaaS Security & Compliance

    SaaS platforms handle sensitive data for hundreds or thousands of tenants, making security and compliance non-negotiable. We understand and comply with GDPR and HIPAA data privacy regulations. We implement defense-in-depth strategies including tenant data encryption, audit logging, and role-based access control.

    Our security work covers both application-level controls and infrastructure hardening. We provide evidence of compliance with ISO 27001 and industry-specific standards, implement automated security scanning in CI/CD pipelines, and build admin tools for compliance reporting. You get audit-ready security without slowing feature velocity.

  • SaaS DevOps & Release Automation

    High-velocity SaaS teams need deployment pipelines that support multiple releases per day without downtime. We build GitOps workflows with automated testing, security scanning, and progressive rollouts.

    Our DevOps engineers implement blue-green deployments, canary releases, and feature flags to decouple deployment from release. We set up observability with distributed tracing and tenant-level metrics, and build runbooks for incident response. You get the infrastructure to ship fast while maintaining stability.

  • Subscription & Billing Systems

    Managing subscriptions, usage metering, and billing across hundreds of tenants requires specialized systems. We integrate with platforms like Stripe, Chargebee, and Zuora, or build custom billing engines for complex pricing models.

    Our implementations handle plan upgrades and downgrades, prorated billing, usage-based pricing, and dunning workflows. We build admin dashboards for finance teams and self-service portals for customers. This gives you accurate revenue recognition and reduces support overhead.

SaaS case studies

Hundreds of SaaS projects delivered.

From pilot to scale, we have the experience to build SaaS platforms that deliver real value. It's why 500+ clients choose us as their SaaS development company.

  • E-LEARNING

    Maintained and Launched New Features for Instructure's Canvas LMS Platform

    Instructure
  • HUMAN RESOURCES

    Migrated HR Platform to Microservices and Developed Mobile Apps for Limeade

    Limeade
  • NON-PROFIT

    Developed MVP and Data Pipelines for iWave's Fundraising Intelligence Platform

    Iwave

MARKETING & ADVERTISING

NextRoll’s SaaS ad platform runs 100K ad auctions per second with ML tech we built

  • 7-Year Engagement
  • 48 Specialists
  • 10/10 NPS Score

NextRoll needed engineers with in-depth knowledge of statistical tools to hone its machine-learning tech used to launch about 100,000 ad auctions per second on autopilot. We brought in dozens of Latin American engineers to fill technical gaps across Data Science, BI, Applications, RTB, Infrastructure, Solutions Engineering, and Big Data teams.

  • Increased the number of Shopify customers joining NextRoll's platform by 60%

  • Scaled our engagement to 48 nearshore engineers working across 7 internal teams

  • Helped NextRoll serve 50 billion ad impressions per day

Nextroll

Get expert help for your SaaS project.

Their engineers perform at very high standards. We've had a strong relationship for almost 7 years.

OUR SAAS DEVELOPMENT TEAMS

Meet the SaaS development experts behind our best work.

Behind every successful SaaS platform is a highly specialized team. That's why we have experts for every stage of SaaS development, from multi-tenant architecture and backend engineering to API design, DevOps automation, and security hardening.

    • Kubernetes
    • Terraform
    • PostgreSQL
    • AWS Certified Solutions Architect – Professional
    • Google Professional Cloud Architect
    • Node.js
    • Python
    • .NET Core
    • AWS Certified Developer – Associate
    • Microsoft Certified: Azure Developer Associate
    • Docker
    • Jenkins
    • Argo CD
    • AWS Certified DevOps Engineer – Professional
    • Certified Kubernetes Administrator
    • REST
    • GraphQL
    • API Gateway
    • AWS Certified Solutions Architect – Associate
    • Apollo Graph Developer Associate
    • HashiCorp Vault
    • OWASP
    • Snyk
    • AWS Certified Security – Specialty
    • Certified Information Systems Security Professional (CISSP)

Onboard a SaaS development team in weeks, not months.

About BairesDev

Why work with BairesDev? We’re trusted by the world’s top tech teams.

BairesDev is a US-based company powered by LATAM dev teams. Since 2009, we’ve built software for companies of all sizes—from scrappy startups to Fortune 500 giants. In fact, we’re one of the fastest-growing software development companies in the world. If you’re looking for onshore quality with nearshore benefits, we’re the partner for you.

1250+

Projects
Delivered

4000+

Developers
On Staff

96%

Client Retention
Rate

500+

Active
Clients

Why work with us

How we work

Here's what makes us easy to work with and hard to replace:

From code quality to compliance, we’ve optimized every part of how we work to support high-performing engineering teams. For you, that means clearer communication and smoother delivery. Plus, get peace of mind from having a development partner you can depend on.

  • Vetted Senior Talent
    We hire the top 1% of over two million applicants, so you only work with the best.
    We give you engineers who’ve already proven they can deliver. Our rigorous evaluation process includes technical tests, English assessments, soft skill screening, problem-solving simulations, and more. Out of over 2 million applicants who apply yearly, fewer than 1% get the chance to join our team. This is how we ensure you get highly qualified developers who are experts in their fields.
  • Timezone Aligned
    We work your team’s hours, which creates faster feedback loops and fewer blockers.
    Our nearshore software engineers share your workday, answering Slack messages, joining daily stand-ups, and presenting demos in real time. Project management is streamlined, questions are answered quickly, blockers are resolved as they come up, and simple code reviews take minutes, not days.
  • Proficient in English
    Our engineers have strong English skills, so communication and documentation are clear.
    Our engineers have 8+ years of experience collaborating with US teams. They excel at articulating complex technical concepts to diverse stakeholders, producing meticulous documentation, and driving technical discussions. This eliminates the ambiguity common with global teams.
  • Full-stack Capabilities
    With expertise in 100+ technologies, we have every specialist your project requires.
    We cover architecture, development, testing, DevOps, and everything in between—reducing hand-offs and creating better architecture decisions for a smoother path from concept to production.
  • Scalable Teams
    Our bench strength lets you scale engineering teams to meet new demands in weeks.
    With 4,000+ engineers on staff and thousands more in our pipeline, we can spin up pods or scale multiple teams across your company in days—so you hit aggressive timelines without bottlenecks.
  • Standard MSAs & SOWS
    We’re easy to onboard because we work the way your legal team expects us to.
    Because we’re based in the US, we follow the same legal standards your team already trusts—using MSAs, SOWs, and documentation that fit your procurement process.
  • NDAs & IP Protection
    We take data and IP seriously, with full protection baked into every engagement. 
    Every engagement begins with a mutual NDA and clear IP ownership terms. Our secure workflows and confidentiality protocols also protect existing codebases and proprietary data.
  • Enterprise-grade Security
    Our devs follow security protocols that meet even the strictest enterprise standards.
    Our engineers work only within the systems they need, using strict access control, audit-friendly workflows, secure repository storage, and more—bringing enterprise-grade protection to every engagement.
  • Managed Delivery
    We actively track our devs’ work to make sure they consistently meet expectations.
    Delivery managers monitor progress, resolve blockers, and report regularly, so you never have to chase updates or second-guess performance.

Work with our SaaS development experts

Flexible engagement models

Need SaaS development expertise?
Plug us in where you need us most.

We customize every engagement to fit your workflow, priorities, and delivery needs.

  • Need a couple of extra software engineers on your team?

    Staff Augmentation

    Get senior, production-ready developers who integrate directly into your internal team. They work your hours, join your standups, and follow your workflows—just like any full-time engineer.

  • Need a few teams to deliver several projects in simultaneously?

    Dedicated teams

    Spin up focused, delivery-ready pods to handle full builds or workstreams. Together we align on priorities. Then our tech PMs lead the team and drive delivery to maintain velocity and consistency.

  • Want to offload everything to us, from start to finish?

    Software outsourcing

    Hand off the full project lifecycle, from planning to deployment. You define the outcomes. We take full ownership of the execution and keep you looped in every step of the way.

Kick off SaaS development projects in 2-4 weeks.

We have reps across the US.

Speak with a client engagement specialist near you.

  1. Discuss solutions and decide team structure.

    Tell us more about your needs. We'll discuss the best-fit solutions and team structure based on your success metrics, timeline, budget, and required skill sets.

  2. Onboard your team and get to work.

    With project specifications finalized, we select your team. We're able to onboard developers and assemble dedicated teams in 2-4 weeks after signature.

  3. We track performance on an ongoing basis.

    We continually monitor our teams' work to make sure they're meeting your quantity and quality of work standards at all times.

SAAS SOLUTIONS

Build with SaaS developers who have experience in your industry.

We've delivered projects across 130+ industry sectors. You won't have to spend weeks getting us up to speed. Our developers come in with a clear understanding of your industry's data complexity, compliance requirements, and SaaS platform’s unique needs.

  • Build secure, compliant SaaS platforms that handle sensitive financial data and meet strict regulatory requirements.

    Build solutions for:
    • Digital banking platforms
    • Payment processing solutions
    • Wealth management portals
    • Lending and loan origination systems
    • Risk management and compliance tools
    • Trading and investment platforms
    • Insurance policy management systems
    • Financial analytics and reporting SaaS
    • Regulatory reporting automation
    • Fraud detection and prevention platforms

SAAS DEVELOPMENT CAPABILITIES

We cover the SaaS development stack (and everything around it).

As a top SaaS development company, we use a modern tech stack built for performance and scale, with a focus on proven tools. Our expertise spans 100+ technologies, so we're equipped to support your full roadmap: SaaS and beyond.

  • Multi-Tenant Architecture

    We design multi-tenant systems that balance data isolation, resource efficiency, and tenant customization. Our approach covers tenant identification strategies, data partitioning patterns, and tenant-aware middleware that enforces security boundaries.
  • Back-end Development

    We build scalable backend services using modern frameworks that support microservices, event-driven architectures, and API-first design. Our focus is on maintainability, testability, and performance under load.
    Node.js
    Python
    .NET Core
    Java Spring Boot
    Ruby on Rails
    Go
  • API Design and Management

    We design REST and GraphQL APIs with versioning, authentication, rate limiting, and documentation that supports both internal services and external integrations. API gateways enforce policies and provide centralized monitoring.
    OpenAPI
    GraphQL
    Apollo Server
    Kong
    AWS API Gateway
    Azure API Management
    Postman
  • Cloud Infrastructure

    We deploy on AWS, Azure, and Google Cloud using infrastructure-as-code, managed services, and container orchestration demonstrating proficiency in cloud-native principles. Centralized infrastructure optimizes resource allocation, resulting in lower per-unit costs.
  • Front-end Development

    We build responsive, accessible web applications using modern JavaScript frameworks. Our frontend architecture supports component reusability, state management, and progressive enhancement.
    React
    Vue
    Angular
    Next.js
    Typescript
    Tailwind CSS
    Material-UI
  • Database and Data Storage

    We select databases based on data model requirements, query patterns, and scale needs. Our implementations include replication, backup strategies, and query optimization for tenant-aware access.
  • Authentication and Authorization

    We implement secure authentication flows with multi-factor authentication, single sign-on, and role-based access control. Our systems support OAuth 2.0, SAML, and custom identity providers.
    Auth0
    Okta
    AWS Cognito
    Azure AD
    Keycloak
    OAuth 2.0
    OpenID Connect
    SAML
  • Subscription and Billing

    We integrate with payment processors and billing platforms to handle subscriptions, usage metering, invoicing, and revenue recognition. Custom implementations support complex pricing models and billing workflows.
    Stripe
    Chargebee
    Zuora
    PayPal
    Recurly
  • CI/CD and DevOps

    We automate testing, security scanning, and deployment using GitOps workflows. Our pipelines support blue-green deployments, canary releases, and feature flags for controlled rollouts.
    GitHub Actions
    GitLab CI
    Jenkins
    CircleCI
    Argo CD
    Spinnaker
    Terraform
    Ansible
  • Monitoring and Observability

    We instrument SaaS applications with distributed tracing, metrics, and log aggregation. Our observability stack provides tenant-level insights, SLA tracking, and automated alerting.
    Datadog
    New Relic
    Prometheus
    Grafana
    ELK Stack
    Splunk
    OpenTelemetry
    Sentry
  • Security and Compliance

    We implement security controls, including encryption at rest and in transit, audit logging, and vulnerability scanning. Our systems support SOC 2, HIPAA, GDPR, and ISO 27001 compliance.
    HashiCorp Vault
    AWS KMS
    Snyk
    OWASP ZAP
    Qualys
    Nessus
    Vanta
    Drata
Curious how we'd approach your SaaS development project?

SAAS DEVELOPMENT PROCESS

How we deliver SaaS solutions that drive business value:

We've refined our SaaS development services across hundreds of projects using Agile methodology for faster iteration and flexibility. Whether you need end-to-end execution or support for an internal team, we step in wherever you need us to move projects forward without friction.

Discovery & Product Strategy

We define business goals and models with stakeholders, building prototypes to validate concepts early. We translate these into technical requirements that prevent feature creep and guide architecture.

1

Multi-Tenant Architecture Design

We design tenant isolation models, data partitioning, and resource policies to support growth. We determine the right mix of shared databases or isolated instances to balance security, compliance, and cost.

2

Technology Stack Selection

We select frameworks and cloud services based on performance and long-term maintenance needs. Our recommendations balance proven stability with modern capabilities, considering security, support, and costs.

3

Core Platform Development

Using domain-driven design, we isolate business logic from infrastructure for a maintainable codebase. We implement feature flags, admin interfaces, and APIs to ensure your platform evolves with your roadmap.

4

API Design and Implementation

We design versioned REST or GraphQL APIs with secure authentication and rate limiting. Contracts are documented via OpenAPI and validated with tests. We also build developer portals to support external integration.

5

Security and Compliance Implementation

We implement encryption, audit logging, and RBAC while handling infrastructure hardening. We document policies and build compliance reporting tools to ensure you meet audit requirements and security standards.

6

Integration and Third-Party Services

We connect your platform to payment, email, and analytics APIs using retry logic and circuit breakers for reliability. We also implement webhook systems and admin tools to manage these integrations gracefully.

7

Performance Optimization and Load Testing

We profile performance to identify query inefficiencies and latency. Through load testing, we validate traffic capacity, optimize database indexes, and tune auto-scaling policies to ensure fast response times.

8

CI/CD Pipeline and Deployment Automation

We build automated pipelines that run tests and security scans on every commit. Using blue-green releases and feature flags, we decouple deployment from release to allow for controlled rollouts and quick rollbacks.

9

Launch and Tenant Onboarding

We deploy to production with full monitoring and incident response procedures. We onboard initial tenants while observing system behavior, collecting feedback, and addressing issues quickly to ensure a smooth launch.

10

Monitoring and Continuous Improvement

We monitor performance, usage patterns, and costs post-launch. We run continuous testing, security audits, and feature upgrades to maintain competitiveness. We track SLAs and error rates. Reviews guide prioritization.

11

Client testimonials

Get SaaS results you can stand behind.

Our work holds up in reviews, in production, and in front of the board.

Join 500+ companies who count on our SaaS developers

Global companies have trusted us to build and scale custom SaaS platforms for over a decade.

  • Forcepoint
  • Abbott
  • AbbVie
  • Abra
  • Acklands-Grainger
  • Acumen
  • Arlo
  • Associated Press
  • Autodesk
  • Avigilon
  • Azlo
  • BBVA
  • Blackboard
  • Burger King
  • Care.com
  • Chime
  • ConsumerAffairs
  • GlobalStart
  • CropTrak
  • eBay
  • Ernst & Young
  • Fresenius
  • Gennev
  • Google
  • Great Wolf Lodge
  • Groupon
  • Hewllet-Packard
  • HomeAdvisor
  • IBM
  • Instructure
  • IPG Mediabrands
  • IQVIA
  • iSeatz
  • iWave
  • Johnson & Johnson
  • Kapsch
  • Keller Williams
  • Kinesso
  • Limeade
  • Netgear
  • Newsela
  • NextRoll
  • Panasonic
  • Patra Company
  • Pinterest
  • R/GA
  • Regeneron
  • Repay
  • Rolls-Royce
  • Salesforce
  • Sana Sano Consulting
  • SAP
  • SiriusXM
  • Swordpoint
  • Thomson Reuters
  • Ticket Galaxy
  • Trone Brand Energy
  • Turner
  • Udemy
  • Univision
  • Urban Outfitters
  • Verisk
  • ViacomCBS
  • Volkswagen
  • Volvo
  • Whirlpool
  • Xtensifi

Excellence.
Our minimum bar for client delivery.

Over 130 awards, accolades, and achievements showcase our quality and commitment to client success.

Our trophy cabinet
  • 1,250+projects
    delivered
    projects executed successfully
  • 130+industry
    sectors
    industry sectors industry sectors
  • America's Fastest-Growing Companies 2025 by Financial Times
    America's Fastest-Growing Companies 2025 by Financial Times
  • Top 100 U.S. IT Innovators 2025 by CIO100 Awards
    Top 100 U.S. IT Innovators 2025 by CIO100 Awards
  • Nearshore North America Top Software Developers 2025 by Clutch
    Nearshore North America Top Software Developers 2025 by Clutch
  • Top 100 Global Outsourcing Providers 2024 by IAOP Global Outsourcing 100
    Top 100 Global Outsourcing Providers 2024 by IAOP Global Outsourcing 100

Accelerate SaaS development and delivery with our top-rated nearshore teams.

Schedule a Call

What tech leaders ask about our SaaS development services:

  • How quickly can you staff a SaaS development team?

    We typically staff SaaS development teams within 2–4 weeks. Our 4,000+ engineer bench includes specialists with multi-tenant architecture, API design, cloud infrastructure, subscription billing, and DevOps experience. This allows us to assemble the right team quickly based on your specific needs.

  • What level of experience do your SaaS developers bring?

    We screen over 2 million applicants annually and hire less than 1%. We only select senior engineers with 8–10+ years of proven experience. Our SaaS developers have built platforms serving thousands of tenants, designed subscription and billing systems, implemented role-based access control across complex hierarchies, and optimized multi-tenant databases for scale. They understand tenant isolation patterns, API versioning strategies, and how to balance feature velocity with architectural integrity.

  • Will your team work in our time zone and integrate with our processes?

    Yes. Our nearshore SaaS development teams work US business hours, communicate in English, and participate fully in your standups, sprint planning, and reviews. We adopt your tools (GitHub, Jira, Slack, Figma), follow your branching strategies and code review processes, and operate as an extension of your team from day one.

  • Can you work with our existing SaaS platform and tech stack?

    Absolutely. Our engineers have worked with legacy monolithic SaaS applications, modern microservices architectures, Rails apps, Django platforms, .NET systems, and Node.js backends. We audit existing code, identify performance bottlenecks and security gaps, and propose incremental improvements that don't disrupt ongoing development.

  • Do you have experience building SaaS products for regulated industries?

    Yes, we're ISO 27001 certified and have provided SaaS application development services for healthcare, finance, government, and other regulated sectors. Our solutions have included HIPAA-compliant data handling, SOC 2 controls, GDPR data residency requirements, and audit logging for compliance reporting. With hundreds of projects delivered in highly regulated industries, our teams have the experience to meet strict regulatory requirements without slowing feature delivery.

  • How long does it take to build a basic SaaS application?

    A basic SaaS application typically takes four to six months from discovery to launch. The timeline depends on feature complexity, integration requirements, team size, and requirements. We often work in Agile sprints to deliver functionality incrementally, so you can validate progress and adjust priorities throughout development.

  • Can you integrate our SaaS platform with third-party services and APIs?

    Yes. We build integrations with payment processors like Stripe and PayPal, communication tools like SendGrid and Twilio, analytics platforms, CRM systems, and custom APIs. Our engineers implement webhook systems for event-driven workflows, design retry logic and circuit breakers for reliability, and build admin interfaces for managing integrations. We also create developer portals when your platform needs to support external integrations.

  • How do you maintain team stability over long engagements?

    We're structured for long-term partnerships. Most engineers stay on SaaS projects for 2+ years, and our 96% client retention rate shows organizations continue working with us year after year. When team adjustments are needed, our bench depth allows us to add specialists or backfill roles quickly while maintaining project momentum through documentation and structured handoffs.

  • How do you ensure data portability in SaaS applications?

    We design data export functionality that retrieves data in standard formats like CSV, JSON, and XML. This ensures data portability if you need to switch providers or integrate with other systems. Our SaaS solutions include automated backup processes and API endpoints for bulk data extraction, giving you full control over your data.

  • Do you handle contracts and billing in the US?

    Yes. We operate from US headquarters under US law and jurisdiction. All contracts, billing, and procurement flow through domestic channels, eliminating international complications.

Useful SaaS resources

SaaS resources.
Related articles.

See why the biggest names in tech choose our SaaS development services.

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