Senior Software Engineer

About Codo

Codo is an engineering consultancy that embeds senior architects and engineers with product teams. We don't replace engineers; we upgrade the system they operate in. From backend and platform engineering to systems architecture, we help companies ship high-quality software and make velocity permanent, not temporary.

We build and maintain open-source tools used by the community (including Suites, a testing framework with 600K+ monthly npm downloads). We use the same tools and patterns in every client engagement. Our tech runs deep in TypeScript, Node.js, NestJS, PostgreSQL, AWS, Kubernetes, Terraform, and more.

Why this role?

As a Senior Software Engineer at Codo, you won't sit on a single product for years. You'll move across domains, codebases, and engineering cultures, embedded directly with client teams for 3 to 12 months per engagement. You'll write production code, shape architecture decisions, raise quality standards, and leave behind systems (and teams) that are stronger than when you arrived.

This role is for backend engineers who care about craft, enjoy learning new domains quickly, and want to solve real-world problems at scale across a variety of projects, not stay in one lane.

What you'll do

• Build and ship backend systems alongside client teams: APIs, services, integrations, and system internals
• Own the full lifecycle of what you build: design, implement, test, deploy, monitor
• Write tested, production-ready code with real observability and graceful failure handling
• Participate in code reviews and raise the quality bar for every team you join
• Improve client engineering practices by setting a strong example in code, reviews, testing, and delivery
• Contribute to Codo's open-source projects (Suites, Contractual, nestjs-pact, and internal tooling)

What you bring

• 5+ years of backend engineering experience
• Strong TypeScript/Node.js skills with production experience in NestJS or similar frameworks
• Experience building backend systems that operate at scale
• Solid understanding of PostgreSQL, Redis, and data modeling patterns
• Experience designing and consuming REST APIs in production
• Comfortable with Docker, CI/CD pipelines, and cloud environments (AWS)
• A testing mindset: unit, integration, and E2E testing strategies
• Self-driven, comfortable with autonomy, and able to work directly with clients

It would be awesome if you also:

• Have experience with microservices and event-driven architectures
• Are familiar with Infrastructure as Code (Terraform)
• Have open-source contributions or side projects you're proud of
• Have worked in consulting or fast-context-switching environments
• Are interested in AI-native development workflows and agentic coding tooling

Life at Codo

• Embedded, not outsourced. You work on-site at client offices as part of their team. You code, review, and ship together. Some periods are remote.
• Strong engineering culture. Your peers are senior architects and engineers who hold a high bar. You'll grow by working alongside people who challenge you.
• Dynamic, not repetitive. New projects, new domains, new teams. Every engagement is different.
• Open source by default. We maintain tools the community depends on, and you'll have time and space to contribute.
• No tracking, no clocks. We optimize for outcomes, not hours.
• Competitive compensation reflecting senior-level expertise.
• We welcome applications from people of all backgrounds. If this sounds like your kind of work but you're not sure you check every box, apply anyway.