Middle Node.js Backend Engineer (TypeScript) - FinTech

About the project

Our client is a fintech company building a new digital banking and payments product from scratch. The platform is built by several stream teams: core banking (accounts, ledgers, lending), payments and open banking, cards, financial crime (KYC, fraud, transaction monitoring) and customer engagement.

You will work in one of the stream teams together with a Senior engineer and the team's Tech Lead, building services, APIs and integrations with banking, payment and compliance providers.

The product is at an early stage: architecture, team and roadmap are being shaped now, and the scope will be refined together with the team. You will join a mixed team of client and NerdySoft engineers. AI-assisted development is part of everyday engineering.

What you will do

• Build backend features end to end, from technical design to production
• Develop services and APIs (REST / GraphQL) and integrations with banking, payment and compliance providers
• Write automated tests and take part in code reviews
• Estimate your features and take part in sprint planning
• Work with AI coding assistants and agents every day: review the code they produce and keep it to the team's standards
• Support features in production: monitoring, bug fixing, incident analysis
• Clarify requirements and discuss solutions with the team and client stakeholders

What you bring

• 3+ years of commercial backend development with Node.js and TypeScript
• Node.js frameworks (NestJS, Express or similar), an ORM or query builder and DB migrations
• Commercial experience on a FinTech product: banking, payments, lending, cards, compliance or similar
• Solid PostgreSQL (or other relational DB) skills: schema design, transactions, indexes
• Experience building REST APIs and integrating external services: retries, timeouts, idempotency, error handling
• Security basics: authentication and authorization (JWT, OAuth 2.0), secure coding
• Experience with message queues or background jobs (RabbitMQ, Kafka, AWS SQS or similar)
• Unit and integration testing (Jest or Vitest)
• Docker, CI/CD, logging and monitoring; hands-on experience with AWS or another cloud
• Daily use of AI coding assistants (Claude Code, Cursor, GitHub Copilot or similar): you can show how you check the code they produce
• Ownership: you can take a feature from requirements to production with little supervision
• English B2 (Upper-Intermediate): English is the working language of the team

Nice to have

• NestJS
• GraphQL
• Money flows: idempotency, reconciliation, double-entry ledgers
• React and TypeScript on the front end
• Kubernetes, Terraform
• LLM-based features

What we offer

• Comfortable workplace and modern office facilities
• Flexible working hours with no overtime and the ability to work remotely
• 50% compensation for certifications, conferences, training
• 50% compensation for English courses
• 18 working days of paid annual leave
• Paid sick leave
• Medical insurance and sports compensation