Senior Node.js Engineer

Our requirements

• At least 5 years of commercial experience with Node.js in a production environment.
• Strong knowledge of TypeScript.
• Solid foundations in asynchronous programming (Promise, async/await, event loop, streams).
• Practical knowledge of REST/HTTP, JSON, OpenAPI.
• Experience with SQL (preferably PostgreSQL) and an ORM (Sequelize or similar).
• Experience writing tests (Jest, Vitest, or equivalent).
• The ability to write clean, well-organized code (DRY/KISS/SOLID).
• Confident use of Git and a merge-request / code-review workflow.
• Communicative English in writing (documentation, code, comments).

Optional

• Hands-on experience using AI coding (e.g., Claude Code, Cursor, GitHub Copilot) as part of daily software engineering work.
• Knowledge and experience with transactions and concurrent operations in PostgreSQL (or another relational database).
• Experience working with large datasets.
• Experience with Kafka or another message broker.
• Working with distributed systems and microservices in production.
• Familiarity with Docker and Kubernetes.
• Experience with CI/CD (e.g., GitLab CI).
• Basic knowledge of Python — for writing helper scripts.
• Schema validation (Joi) and safe error handling.
• Prior exposure to the CDP / loyalty domain.

Your responsibilities

• Develop and maintain microservices in Node.js + TypeScript.
• Design and implement REST APIs aligned with OpenAPI.
• Work with PostgreSQL — both via Sequelize (ORM) and in raw SQL when we need finer control over the query.
• Event-driven processing with Kafka.
• Write tests — unit, integration, and end-to-end (Vitest/Jest).
• Review code and discuss architecture and quality with the team.
• Co-author technical documentation and design decisions (RFCs, design docs).
• Operate in 2-week sprints in a Scrum model, working closely with a dedicated Product Owner.

About the project

This is how we organize our work

What we offer

• Work with a modern stack (Node.js, TypeScript, PostgreSQL, Kafka, Docker, Kubernetes) at real scale.
• Stack kept on current versions — we don't let applications drift into technical debt; we regularly modernize dependencies and tooling.
• Day-to-day support from AI agents (Claude Code, OpenAI tools) — treated as a standard part of our toolkit, not an experiment.
• Real impact on a product used by top clients in 30+ countries.
• Close cooperation with experienced engineers and a dedicated Product Owner.
• A clear rhythm of work: 2-week sprints, Scrum/Agile.
• A non-corporate atmosphere oriented around meritocracy — we reward thinking and quality, not hours behind a desk.
• Flexible working hours and no dress code.

Benefits

• sharing the costs of sports activities
• private medical care
• remote work opportunities
• flexible working time

Synerise S.A.