[Hiring] Senior Fullstack Engineer @Poland and Central-Eastern Europe

Role Description

You will be:

• designing and developing backend services and APIs using Go,
• building fullstack solutions using Go and TypeScript,
• designing and implementing complex business workflows and state machines,
• working with PostgreSQL and ensuring data consistency and reliability,
• developing automated tests, particularly end-to-end tests, to ensure application quality,
• establishing engineering practices and guardrails for AI-generated code,
• contributing to technical decisions and shaping architecture in an evolving environment,
• collaborating with the team to deliver scalable, production-ready solutions.

Qualifications

• senior-level experience in fullstack software engineering, with a strong backend focus,
• strong commercial experience with Go for backend development,
• very good knowledge of TypeScript,
• solid experience with PostgreSQL,
• hands-on experience designing and developing backend APIs,
• experience implementing complex workflows, business processes, or large state machines,
• strong experience with automated testing, particularly end-to-end testing,
• experience working in an AI-first or AI-assisted software development environment,
• ability to establish reliable engineering practices and testing guardrails around AI-generated code,
• ability to make sound technical decisions when requirements and architecture are still evolving,
• good command of English (min. B2).

Requirements

• Work from the European Union region and a work permit are required.

Nice to have

• experience in fintech, particularly with financial workflows, lending, leasing, or payments,
• experience developing AI agents or agentic workflows,
• experience building systems that combine automated workflows with human decision-making and approval steps,
• experience with Kubernetes and running backend services in a cluster,
• experience with GCP,
• familiarity with Kafka and Redis or Redis-compatible databases.

Recruitment Process

• CV review
• HR call
• Technical Interview
• Client Interview
• Decision