Staff Software Engineer

About the role

About Swap

Swap is the infrastructure behind modern agentic commerce. The only AI-native platform connecting backend operations with a forward-thinking storefront experience.

Built for brands that want to sell anything - anywhere, Swap centralises global operations, powers intelligent workflows, and unlocks margin-protecting decisions with real-time data and capability. Our products span cross-border, tax, returns, demand planning, and our next-generation agentic storefront, giving merchants full transparency and the ability to act with confidence.

At Swap, we’re building a culture that values clarity, creativity, and shared ownership as we redefine how global commerce works.

About the role

We’re growing our engineering team in Kraków, and we’re looking for a Staff Software Engineer to join us. You’ll be a technical leader on the team you join, helping us build products that merchants and shoppers rely on every day.

You’ll set direction for several engineering teams, take on the hardest cross-cutting problems, and stay hands-on in the code that matters most. You’ll work closely with Product, Design, Data, and engineering leadership to turn ambitious goals into practical plans, and you’ll help the engineers around you do their best work.

Responsibilities

- Lead large initiatives that run for several quarters and involve multiple teams, from first scoping through to production.

- Write exemplar code in critical paths, setting the implementation bar for the wider group.

- Review important designs from other teams, helping engineers balance quality, speed, reliability, and long-term maintainability.

- Define and uphold operational standards for the group: monitoring, availability, scalability, security, release safety, and cost awareness. Help lead serious incidents and follow through on the right fixes.

- Lead tool evaluations and architecture migrations, making build-vs-buy trade-offs explicit.

- Use AI well beyond the basics, and push back on AI-generated complexity so code health holds as we speed up.

- Own the business result of your work. Define success metrics, monitor after launch, and challenge constructively when something won’t move the needle for merchants.

- Mentor Senior Engineers and below, and lead or join senior-level interviews.

- Write and improve the documentation others rely on, such as architecture direction, decision records, and runbooks.

Requirements

- Significant experience (typically 8+ years) building and shipping production software, with a record of leading complex initiatives that cross team lines.

- Deep expertise in TypeScript/JavaScript and Node.js, including architecting REST and/or GraphQL APIs and distributed systems.

- Comfort outside your home language and stack. We expect Staff engineers to be T-shaped.

- Strong relational database, data modelling, and SQL skills, plus familiarity with NoSQL.