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SOFTWARE DEVELOPMENT FOR STARTUPS
Build software at startup speed. Without shortening your runway.
Team up with top 1% nearshore engineers to accelerate delivery without blowing up your burn rate. We typically land teams in 2 weeks. So you can hit the milestones that matter to your next stage of growth.
4.9/5
60 client reviews
Startup software development services
Accelerate product development with full lifecycle support.
From early-stage MVPs to platforms serving millions of users, we've shipped software across industries for startups at every stage of growth. Whatever you’re building, we can help.
MVP Development
Build a new MVP or extend your existing one into a stable V1/V2. We help you define the first meaningful release, design a practical architecture, and implement the core product flows plus the supporting pieces they depend on. We refactor what's fragile, add tests, CI/CD, and monitoring. So you can confidently ship the essential features customers and investors are asking for.
Backend & API Development
Make your backend ready for real growth. We harden the services that got you to early traction, fix the code that works for 100 users but not 10,000, and make core flows (like auth, billing, and data processing) stable under load. We clean up and extend your APIs, add the integrations you need—payments, CRM, data providers, internal systems—and handle the retries, webhooks, and failure paths so they behave in production.
Frontend Development
Ship polished, fast interfaces. We work in your existing stack to improve and extend your web (and mobile, if needed) frontends. We clean up core screens, tighten performance, and build out dashboards, admin tools, and other key flows. We align the UI with your design system, organize components and state so they're easier to change, and connect everything to your analytics. So you end up with interfaces that look and feel solid to users, and a frontend your development team can keep iterating on without constant rewrites.
UX/UI Design
Build user experiences that reduce friction and increase activation. We run jobs-to-be-done discovery, define information architecture, create wireframes and prototypes, and build design systems—validating the work with usability testing on real users where possible. Our focus is evidence, not taste: quick experiments, measurable UX metrics, and tight pairing between designers and developers so what gets built matches what was designed.
AI Development
Prototype and ship everything from AI-features to agentic systems. We help you pick the right use cases, select and integrate models (including LLMs), and connect them safely to your product and data. We design prompts, retrieval, tools, and guardrails, then add evals and monitoring for quality, latency, and cost. Where the risk is higher, we add fallbacks or human review so failures are controlled.
Data Engineering
Get data you can trust for analytics, AI, and operations. We ingest data from your app and third-party tools, model it in a warehouse or lakehouse, and set up the pipelines that keep it fresh. We add tests, documentation, and clear ownership so teams know what each metric means and can trust it. This results in faster analysis for your teams and a solid foundation for data-powered product features.
Cloud Development
Build cloud infrastructure that scales with usage and keeps cost manageable. We design and implement your architecture, infrastructure as code, CI/CD, and core observability on AWS, GCP, or Azure. Our approach includes security defaults, environment parity, IaC reviews, and right-sizing so you’re not overpaying just to avoid outages. At the end of the day, you get predictable reliability, cleaner compliance paths, and clearer visibility into spend.
Quality Assurance & Testing
Catch issues before users do, without dragging down delivery speed. Our QA engineers work with you to define a lean test strategy, add automated testing where it pays off, and wire tests into your CI pipeline. We focus on the paths that matter most—signup, billing, and core workflows—plus targeted manual and exploratory testing around new features. So you start every day with fewer production issues while shipping faster, safer releases.
Bairesdev + Bdev ventures
BairesDev was once a startup in hypergrowth; now we invest in them.
Through our VC fund, we invest in fast-growing B2B software companies, from Seed to Series B. So we know the pressures startups face: tight timelines, milestone-driven funding, investors watching every sprint.
When we build your team, we do it with that reality in mind—with runway-friendly pricing and execution that keeps investors confident.
$130M+
40
$12.3M
73%
Nacho De Marco
CEO at BairesDev & General Partner at BDev VenturesTell us more about your startup's needs.
Custom software solutions
Work with specialists with real experience in what you’re building.
Why work with BairesDev
Backed by 4000+ devs
Ship more software.
De-risk delivery.
When the stakes are high, every sprint counts. Team up with our nearshore engineers to deliver ambitious roadmaps with even the tightest timelines.
Let's Discuss My Project
Validate and ship features faster.
Treat us as an extension of your dev team when you're under pressure to deliver. In just 2 weeks, we provide senior, time-zone-aligned engineers who can immediately contribute to core features. So you can hit hard deadlines without burning out your existing team.
Keep your burn under control.
We give you premium tech talent without long-term headcount or big fixed costs. Scale up or down as your roadmap and funding change. So you can protect your runway while still moving the product forward.
Hit funding milestones easily.
We add senior engineers and additional capacity, so you can actually ship the versions, features, and stability tied to your next round. So you can report concrete progress instead of sliding dates.
Case studies
Join hundreds of startups who build with BairesDev.
- Fintech
Built Secure, Scalable Architecture for AI Trading App
A fintech data science startup building an AI trading app needed help designing the application architecture, integrating multiple APIs, automating DevOps, and securing sensitive financial data. We assembled a dedicated team of 7 senior developers. Our team designed a scalable architecture that could handle growing user demand and heavier trading loads, automate CI/CD for faster and safer deployments, and optimize database queries and data processing pipelines. We also strengthened data security with encryption, access controls, and robust authentication.
- Python
- Docker
- GitHub
- Terraform
- Alpaca
- Healthcare
Improved Reliability and UX for a Telehealth Platform
A telehealth menopause clinic was struggling with downtime and a web experience that lagged on mobile. Our DevOps and front-end team stabilized the platform with staging and disaster recovery, production-equivalent smoke testing before deploys, and backup/failover to reduce incident impact. In parallel, we modernized the UI in Adobe XD with a responsive design that fit existing flows. The outcome was safer releases, fewer disruptions, and a faster mobile UX.
- Kibana
- Jenkins
- Google Cloud Platform
- Node.js
- React
- Marketing & Advertising
Scaled Backend Infrastructure for Growing AI Marketing Platform
An AI marketing startup bringing on enterprise clients hit scalability limits. They brought in our senior backend engineers to expand capacity, fix bottlenecks, and keep response times low. We strengthened their API architecture to handle higher traffic, built new backend features for AI-driven workflows, integrated key third-party APIs, and optimized performance to reduce latency. Our platform work allowed the company to onboard bigger customers and ship new features without constant firefighting.
- Python
- Django
Who we work with
Get development support at any growth stage.
From early MVPs to scaled platforms, we plug into your team to keep product development moving.
Pre-seed and Seed.
Series A-C.
Bootstrapped
Startup Investors
Startup Studios
Accelerators
How we work
Built for performance and predictable delivery.
Yes, you can build software without constant trade-offs. Here’s how we make it happen:
Put top performers on your startup’s team.
- 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.
Put top performers on your startup’s team.
Runway-Friendly Pricing.
Cut costs.
Keep quality.
You don't have to choose between quality and cost savings. We give you both. Get premium tech talent at 40-50% less than U.S. rates, without the hidden costs that come with bargain offshore vendors.
Transaction detail
Top 1% Senior Talent
Discounts
- Benefits & Compensation100% off
- Taxes & Social security100% off
- Recruitment Costs100% off
- Overhead Costs100% off
- Time zone delays100% off
- Rework100% off
- Tech debt100% off
Potential saving: 39% of total costs
Flexible engagement models
Working with us is easy.
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 projects in 2-4 weeks.
We have reps across the US.
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.
Client testimonials
Get results you can stand behind.
Our work holds up in reviews, in production, and in front of investors.
Global companies have trusted our developers to build and scale software 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 software development and delivery with our top-rated nearshore teams.
Accelerate My RoadmapFAQ
What startups ask before bringing us in:
Have you worked with funded startups at my stage?
Yes. We've worked with dozens of funded startups from early Seed through later rounds, helping them turn MVPs into real products, ship roadmap-critical features, and improve reliability. We also support 40+ B2B software companies in the BDev Ventures portfolio (several acquired). When it comes to custom software development, we're very familiar with the product and milestone pressure funded startups operate under.How senior are the people who'd be on my project?
You'll get a senior team. Most of our engineers have 8–10+ years of experience and have already shipped multiple complex products. We rigorously vet their technical expertise and only hire the top 1%, so the people you see on your project are used to owning real work. In practice, that means you get top performers who work in your tech stack, make sound technical decisions, and move work forward without needing step-by-step direction from your team.How do you plug into our team day-to-day?
We work inside your existing setup. This means our software developers join your communication channels, project management tools, and repos. They also attend your standups, code reviews, and other key touchpoints. Think of us as an extension of your team, not a separate vendor.
Because we're nearshore, we overlap core working hours, so questions, reviews, and decisions can happen in real time.Can you work in our existing stack and codebase, or do you always push for a rebuild?
We work in your existing tech stack and codebase by default. Our engineers cover 100+ technologies and programming languages, so most of the time it's about improving what you have (cleaning up hot spots, adding tests, modernizing where it makes sense) rather than pushing a rewrite.
We'll only recommend a rebuild if the current system truly can't support your goals, and if we do, we'll be clear about why and what the tradeoffs are.How fast can you get a team live and productive?
We typically assemble and onboard a team in 2–4 weeks. Because they're senior, they often start making useful commits in the first week. Full productivity depends on the complexity of your project, but clients tell us we onboard faster than most vendors and in-house hires.What does your team composition look like for a typical startup engagement?
We start from your goals and gaps, then put together a team with the right mix of skills, instead of forcing a fixed template. We can fill any role across the SDLC: backend and frontend engineers, tech leads, QA, DevOps, UX/UI designers, project managers, and roles like data or prompt engineers. As your needs change, we can adjust the mix by adding or dialing back skills without you having to reorg or re-hire.Who owns the IP and code?
You do. Whether you're augmenting your team with our engineers or outsourcing software development end to end, All code, IP, and related assets we build for you belong to your company, as specified in the contract.Do you support agile development practices?
We're a big fan of Agile software development. In fact, we use Agile methodologies with most of our clients. That said, we always align to your way of working—be it Scrum, Kanban, or a hybrid approach—rather than forcing a new process. If you already have a defined workflow, we plug into it. If not, we can help you set up something simple that fits your team size and roadmap.How do you handle idea validation so we don't overbuild before we have real user feedback?
We start by making the idea and success criteria explicit, then decide what level of validation makes sense for your stage and timeline. That can include light market research, quick prototypes, or small experiments with real users so you get early user feedback before we commit to a full build. We instrument features with analytics, collect qualitative feedback, and, when needed, support user acceptance testing with your team or pilot customers to confirm the solution fits real workflows. The goal is simple: use idea validation and data to decide whether to scale up, adjust, or drop a feature, instead of guessing after months of development.What's your software development process when working with startups?
When we do software development for startups, work follows either a staff augmentation (or dedicated teams) or end-to-end outsourcing model.
In staff augmentation, our engineers join your team, use your tools, and follow your normal cadence—picking up tickets, opening PRs, joining standups, and shipping in short iterations. When outsourcing a defined project, we set clear goals and milestones, then run a small senior squad that handles day-to-day delivery with regular demos and check-ins.
In both cases, we stick to standard best practices: code review, comprehensive testing, and CI/CD. So you get steady, visible progress.What's your approach to security, compliance, and data privacy for early-stage products?
We take security seriously from the start, even for early-stage products. We follow standard best practices: role-based access control, secure secrets management, HTTPS everywhere, least-privilege access, audit-friendly logging, and encryption for sensitive data in transit and at rest.
We've also worked with hundreds of companies in highly regulated industries. So if you have specific needs (like SOC 2 prep, HIPAA alignment, or GDPR-related requirements), we know how to design the architecture and processes with those in mind so you don't have to redo core pieces later.Can you support AI/ML work or just "normal" app development?
Yes. We're actively working on dozens of AI projects right now for both startups and larger companies. We can support the full AI lifecycle, LLM apps and agents, LLM fine-tuning, RAG systems, data pipelines, MLOps, and evaluation. And we can staff the roles you need for that work (data scientists, AI/ML engineers, prompt engineers, etc.) alongside standard product and platform engineers.What's better about working with BairesDev versus other offshore vendors?
As a startup software development company, BairesDev is built for how funded startups actually work. We've built products for dozens of startups and invested in dozens more, so we're used to MVPs, tight timelines, and milestone pressure.
You get the top 1%: high quality, senior LATAM engineers who ship reliable software without a lot of supervision. We're nearshore with U.S. time-zone overlap, so standups, reviews, and decisions happen in real time. Plus, with 500+ active clients across industries, you can trust we're a partner who can grow with you.
See why startups at all stages choose us as their software development company.
Let's Discuss Your Project