Custom Software & Enterprise Application Development
Off-the-shelf software fits most of your business until it doesn't. Five Frogs designs, builds and runs custom web applications, enterprise systems and SaaS products for companies in the US and Europe, with an offshore engineering team in India that works like part of yours.
What we build
We build robust enterprise applications that streamline business operations, improve collaboration and support long-term growth. Every system is designed around your workflows and integrates with the software you already run.
From planning and architecture to deployment and ongoing support, we deliver enterprise-grade applications that improve productivity, drive innovation and adapt as your business needs change.
- Custom business applications that replace spreadsheets, manual steps and ageing off-the-shelf tools.
- Enterprise systems for operations, finance, logistics and customer management, with the security and audit trails they need.
- Integrations and APIs that connect your applications, databases and third-party platforms.
- Modernization of existing systems, including Progress OpenEdge, .NET and Java applications, step by step rather than in one risky rewrite.
- Data platforms and reporting on relational and big data databases.
From brief to launch
For new products, our squads compress the usual plan-build-test cycle into a few overlapping stages. For a well-scoped product, this approach can take a launch from months to weeks.
- Co-creation: you and our product architect turn a written brief into architecture, data models, wireframes and a first risk assessment.
- Prototype and validate: a working MVP, including back end, APIs and tests, goes in front of real users within days.
- Build and refine: short loops of building, reviewing and refining, with automated regression testing throughout.
- Quality and security: every change is scanned and tested automatically, so people can focus on the high-risk logic.
- Release and learn: gradual rollouts to small groups of users, with production telemetry feeding the next iteration.
How we deliver
We run small, senior-led squads: a product architect who owns the technical decisions, engineers who build with AI-assisted tools, a quality engineer and shared DevOps and UX support. The squad works from a written brief, ships a working MVP early, and then iterates on real feedback rather than a fixed plan.
AI tools handle the routine work, such as boilerplate, first drafts, refactors and test scaffolding. That leaves engineers to focus on what matters to your business. Adopting GitHub Copilot across our day-to-day development made implementation roughly 60% faster, with more consistent code.
Engagement models
Pick the model that fits your budget, timeline and how much you want to manage day to day. You can start with one and move to another as the work changes.
- Staff augmentation: individual engineers join your team, work in your tools and ceremonies, and report to your leads.
- Dedicated team: a stable squad that we build around your roadmap, with a Five Frogs lead responsible for delivery and quality.
- Fixed-scope project: an agreed scope, timeline and price for well-defined work such as a module, migration or MVP.
Technology we use
React, Next.js, Angular and Vue.js on the front end; Node.js, TypeScript, Python, .NET and Java on the back end; PostgreSQL, MongoDB, Redis and GraphQL for data; and AWS, Docker, Kubernetes, Terraform and GitHub for delivery. We also build and modernize Progress OpenEdge and SAP-integrated systems.
Industries we serve
Domain knowledge shortens every project, because we already understand the workflows, the data and the rules. Our teams have built enterprise software for:
Why clients work with Five Frogs
HyvinCare
A dental lab marketplace built by a three-person, AI-augmented squad: development started in May 2025 and the platform reached full operation in February 2026.
5F JDM
Our own job-pipeline management tool, built by a two-person squad and shipped four weeks after kickoff.
91%
of projects delivered on time, with a 98% client satisfaction rate.
Frequently Asked Questions
About enterprise application development at Five Frogs
Yes. Most of our work extends or modernizes systems that are already in production. We start with a short review of the codebase and delivery process before we change anything.
You do. Ownership of the code and deliverables is set out in the contract before work starts.
Most engagements kick off within one to two weeks of scoping.
Yes. We work with early-stage startups that need to move fast and with enterprises that need scalable, compliant delivery. The engagement model flexes to fit either.
More services
Further reading

The 10x Team: Product Engineering Lessons from AI-Accelerated Launches
How a flatter, squad-based structure and agentic coding tools took product launches at HyvinCare and Five Frogs from months down to weeks — without cutting corners on quality.

The 10x Team: Now Is The Moment To Rethink Engineering Team Potential
The industry chased the mythical 10x engineer for a decade. With AI-assisted tooling now mature, the more useful unit to build isn't a person — it's a 10x team.
Ready to take your
growth to the next level
Clear strategy, smart execution, and a strong foundation built to drive sustainable growth over time.


