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What we do

Software engineering with purpose

Four focused services. No filler. Each one with a clear objective and concrete deliverables.

01

Web development

Apps, APIs and backends

We build web applications, REST/GraphQL APIs and backend systems from scratch or on top of what you already have. No black magic: clean, documented code that your team can maintain when we're gone.

Good for

Startups and companies that need a new digital product or a robust integration.

What we deliver

  • Functional, deployed web app or API
  • Technical and usage documentation
  • Integration and unit tests
  • Repository access and CI/CD pipeline
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02

Systems architecture

Technical design that scales

We design the right architecture before writing the first line of code. We define components, service contracts, database strategies and scalability patterns adapted to your real context — not a whitepaper's context.

Good for

Teams about to start a complex project or needing to redesign an existing system.

What we deliver

  • Architecture document (ADR)
  • Component and flow diagrams
  • Stack recommendation with justification
  • Phased implementation plan
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03

Code audit

Independent technical diagnosis

We review your codebase with fresh eyes and technical judgment. We identify technical debt, security vulnerabilities, performance issues and anti-patterns — with an actionable report, not a complaint list.

Good for

Companies that want to know the real state of their system before scaling, investing or acquiring.

What we deliver

  • Audit report with severity per finding
  • Recommendations prioritized by impact
  • Security and dependency analysis
  • Results presentation session
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04

Migration & modernization

From legacy to modern production

We migrate legacy systems without throwing everything away. Incremental strategies that allow you to keep operating while we modernize: new technologies, new architectures, without the big bang rewrite nobody survives.

Good for

Companies with critical systems on outdated technologies that cannot afford service downtime.

What we deliver

  • Phased migration plan with rollback
  • Data strategy and compatibility
  • Incremental implementation with feature flags
  • Parallel validation before cutover
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How we work

A clear process from start to finish

01

Discovery

We understand your business, technical context and real objectives. Without assuming anything.

02

Diagnosis

We survey the current system, identify constraints and define scope precisely.

03

Design

We propose the technical solution, discuss it with you and adjust until it makes sense.

04

Implementation

We execute with incremental deliveries. You always know the current state of the project.

05

Validation

We test, review with you and adjust before closing. Feedback is part of the process, not an extra.

FAQ

Frequently asked questions

Don't find the answer? Write to us directly.

Yes. We work with startups starting from scratch and established companies that need to modernize or scale. What matters is that the project has a clear technical objective.

Before starting any project we do a scoping exercise that allows us to give a well-founded estimate. We don't throw numbers in the air. If scope changes during the project, we discuss it before continuing.

We choose the stack based on the problem, not the other way around. We primarily work with Go, Rust, TypeScript/Node.js, React/Next.js, PostgreSQL and cloud services (AWS, GCP, Vercel). If your team already uses another stack, we can adapt.

We deliver the code, documentation and everything needed for your team to continue without depending on us. If you want post-delivery support, we can agree on that separately.

Both. A code audit can take a week. A full development can take several months. The format depends on the objective.

Yes, absolutely. Many clients hire us only to design the architecture or audit the code, then execute with their own team. We have no problem with that.

Next step

Which of these services do you need?

Tell us your case. Within 24 hours we'll respond with a concrete approach.

Services — Software Development, Architecture and Audit | Madariaga SAS