Custom Software Development Company
Build custom software with experts trusted by 1500+ companies.
“We've had quite a few superstars who resolve our problems without our full-time engineers having to step in.
Nishant Roy
Custom Software development services
No matter what you’re building, we can help.
Our custom software development services cover the full lifecycle, from ideation and architecture to deployment and optimization. Bring in our experts to ship higher-quality software faster and without adding headcount.
The right architecture is the foundation for speed, stability, and scale. We work with your engineering and product leaders early to lock in decisions that prevent months of rework down the road. Our designs are modular, balancing performance, resilience, and cost from the start.
Our senior architects run focused discovery sessions with your teams. They dig into constraints, document trade-offs, and produce blueprints you can act on. These cover data flows, service boundaries, deployment topologies, observability patterns, and governance policies. Every choice ties back to business value, reducing delivery risk.
We modernize outdated systems so they can move as fast as your business needs to. Our developers know both legacy and modern languages, which means we can untangle complex logic and rebuild it on scalable, maintainable architectures.
We refactor brittle codebases, break domains into microservices, and re-platform core systems. Along the way, we upgrade frameworks, databases, and CI/CD tooling. Our team builds automated regression tests and rollback plans to protect uptime and data integrity while reducing maintenance costs and setting you up for future growth.
We build cloud-native applications that scale easily, stay resilient under load, and keep operating costs predictable. Our engineers use managed services, container orchestration, and serverless functions to deliver elasticity and reliability from day one.
We also put governance in place to keep your cloud secure and financially sustainable. That means active cost management, multi-region designs to protect uptime, and portable architectures that prevent you from getting locked into a single vendor.
We connect enterprise applications, SaaS platforms, and legacy systems into one high-performance ecosystem. Our integrations link new solutions with ERPs, CRMs, data warehouses, and third-party platforms so data flows where it's needed.
Our team applies versioning, schema governance, authentication, authorization, and rate limiting to keep data exchange secure and reliable in both directions. This enables safe automation, accelerates product development, and extends the value of the systems you already have. Our architects oversee every connection to make sure integrations stay fast, dependable, and ready to scale.
We design backends built to perform under heavy, unpredictable demand. Our engineers use domain-driven design, horizontal scaling, CQRS, and database sharding to keep speed and reliability consistent as usage grows.
We implement and maintain full-stack observability and automatic failover to ensure stability well beyond launch. We run continuous profiling, chaos testing, and cost-performance drills to identify issues early and keep systems operating efficiently. Capacity-planning workshops give stakeholders accurate forecasts, helping you remove uncertainty as volumes increase.
We build fast, responsive interfaces that meet recognized accessibility standards, including WCAG 2.2. Our UX engineers turn complex business workflows into intuitive designs that scale without losing performance or usability.
We run Lighthouse audits and automated visual regression tests to keep interactions smooth and brand-consistent. We implement and maintain advanced accessibility tooling, along with real-user monitoring, to catch and fix issues before they affect customers. This improves engagement, reduces support demand, and keeps the front end reliable under load.
In too many teams, QA happens at the end of the release cycle—slowing delivery and letting costly defects slip through. We move testing into the pipeline from the start with a comprehensive, automated strategy tailored to your stack and workflows.
This shift-left approach catches bugs, security vulnerabilities, and performance issues early (when they're faster and cheaper to fix). Tight feedback loops allow frequent, low-risk releases that protect your users and brand. They also give engineering teams the confidence to ship at speed.
We engineer delivery platforms that standardize best practices and reduce operational risk. Our experts design infrastructure as code, build automated pipelines for releases, and set up monitoring across every environment for real-time visibility.
Teams gain self-service deployments with guardrails that prevent configuration drift and enforce security baselines. We track SLO compliance to keep performance on target. The result is shorter lead times, fewer failed changes, and faster recovery when issues occur.
Custom Software case studies
1250+ software development projects delivered.
Across every stage of development, we have the experience to build custom solutions that deliver real value. It’s why 500+ clients choose us as their custom software development company.
Developed AI-Powered Dynamic Pricing Tool for Ticket Sellers
TicketGalaxy needed to replace a third-party brokerage tool with a custom solution that offered more control and better pricing flexibility. We created a custom solution that used AI to adjust prices based on market trends and inventory. Over the course of the project, we also added new features, fixed bugs, and upgraded the user experience. The result was a fully owned platform that reduced vendor dependence and improved performance.
Developed Marketing Intelligence Engine with Custom KPIs and Snowflake Integration
Kinesso needed to modernize its data pipeline and user experience. We created a new product, the Marketing Intelligence Engine, that made insights easier to access and interpret. Alongside it, we delivered a robust Tableau dashboard system and built an optimized ETL tool enable a smooth migration to Snowflake. These tools gave Kinesso's clients a faster, clearer view of their marketing performance.
Improved Speed and Scalability of Fundraising Intelligence Platform
The new iWave solution has an updated user experience with a modern, accessible, and responsive design. This intuitive interface delivers comprehensive donor information.
We built the platform on a faster, more powerful, and more scalable architecture. The data is more up-to-date, thanks to algorithms that can turn quality data into actionable information.
Get expert help for your Custom Software project.
“Their engineers perform at very high standards. We've had a strong relationship for almost 7 years.”
Our Custom Software Development Teams
Meet the experts behind our best work.
Top-quality software solutions require a highly specialized, dedicated team. That’s why we have experts for every stage of the software development lifecycle, from software architecture to quality assurance.
- C# / .NET
- React
- Azure DevOps
- AWS Certified Solutions Architect – Professional
- Microsoft Certified: Azure Developer Associate
- AWS
- GCP
- Terraform
- Kubernetes
- AWS Certified Solutions Architect – Professional
- GCP Professional Cloud Architect
- Kubernetes
- Terraform
- GitHub Actions
- Argo CD
- Prometheus
- Certified Kubernetes Administrator
- HashiCorp Certified: Terraform Associate
- Selenium
- Cypress
- Playwright
- ISTQB Advanced Test Automation Engineer
- Certified Professional in Accessibility Core Competencies (CPACC)
- Jira
- Confluence
- Miro
- PMI-ACP
- Certified Scrum Professional
Onboard a software 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+
ProjectsDelivered4000+
DevelopersOn Staff500+
ActiveClients96%
Client RetentionRateHow 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.
Work with our custom software development experts.
- Vetted Senior TalentWe 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 AlignedWe 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 EnglishOur 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 CapabilitiesWith 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 TeamsOur 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 & SOWSWe’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 ProtectionWe 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 SecurityOur 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 DeliveryWe 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 custom software development experts.
Flexible engagement models
Need software 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 AugmentationGet 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 teamsSpin 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 outsourcingHand 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 Custom Software projects in 2-4 weeks.
Speak with a client engagement specialist near you.
- 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.
- 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.
- 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.
Custom Software Development Solutions
Build with software engineers who have experience in your industry.
We’ve delivered projects across 130+ industry sectors. You won’t spend weeks getting us up to speed. Our software developers arrive with a clear grasp of your industry’s data complexity, compliance mandates, and competitive pressures.
Custom Software Development Capabilities
We cover the custom software development stack (and everything around it).
As a top custom software development company, we build on a modern tech stack optimized for performance and scale. Our expertise spans 100+ technologies, so we can support any need on your roadmap.
Custom Software Development Process
How we deliver innovative software solutions that drive business value:
We’ve refined our custom software development services across hundreds of projects. Whether you need end-to-end execution or targeted support, we step in wherever you need us to move projects forward without friction.
We partner with stakeholders to define measurable business outcomes, identify constraints, and establish the KPIs that will define success long after launch.
We design resilient architecture for today’s needs and future growth, choosing technologies for performance, security, and cost-effectiveness.
We configure Git repos, CI/CD pipelines, tests, and cloud environments so your team can build quickly and safely from day one.
We turn strategic goals into a clear, prioritized backlog, planning agile sprints to deliver the most valuable work first.
We use TDD to build features, APIs, and systems with automated checks that prevent breaking existing functionality.
We integrate automated scanners into the pipeline, catching vulnerabilities, code issues, and compliance risks on every commit so developers can fix problems before they reach production.
We build and manage zero-downtime pipelines with canary releases, safely deploying updates to production without disrupting users.
We track logs, metrics, and traces with SLO-based alerts to monitor health, performance, and usage in real time.
We analyze observability data to fix bottlenecks, reduce costs, and guide the next sprint's priorities.
We maintain security, compliance, and efficiency while evolving your platform to meet future challenges and opportunities.
Client testimonials
Get dev outcomes you can stand behind.
Our work holds up in reviews, in production, and in front of the board.
Global companies have trusted us to build and scale custom software solutions for over a decade.
Excellence.
Our minimum bar for client delivery.
Over 130 awards, accolades, and achievements showcase our quality and commitment to client success.
- 1,250+projects
delivered - 130+industry
sectors
America's Fastest-Growing Companies 2025 by Financial Times Top 100 U.S. IT Innovators 2025 by CIO100 Awards Nearshore North America Top Software Developers 2025 by Clutch Top 100 Global Outsourcing Providers 2024 by IAOP Global Outsourcing 100
Accelerate custom software development and delivery with our top-rated nearshore teams.
Schedule a CallCustom Software Development FAQ
What tech leaders ask about our custom software development services: