Backend Engineer: Node.js/NestJS for Scalable MarTech

SKELAR; Warszawa; On-site; PLN 180,000 - 240,000; Full time

Benefits offered by this job

Competitive salary

Breakfasts and snacks in office

Medical insurance

20 days paid vacation

Job summary

SKELAR is seeking a Middle Node.js Developer for our partner company Duomo. You will design and grow backend systems powering a Christian-tech product, with focus on MarTech automation, asset lifecycle tooling, and observability.

Apply your Node.js/TypeScript expertise to scale services, improve reliability, and integrate 3rd-party REST APIs. The role emphasizes architecture design, code reviews, and robust testing, with opportunities for career growth and impact across a rapidly growing product

Qualifications

• 2+ years of experience with Node.js + TypeScript
• Experience with NestJS
• PostgreSQL and a typed ORM (Drizzle/Prisma/TypeORM)
• Redis and message queues (BullMQ, RabbitMQ, SQS) with idempotency, retries and distributed locks
• Experience with third-party REST API integrations
• Docker, CI/CD and unit testing with Jest

Responsibilities

• Driving MarTech automation: designing, developing, and scaling backend services to automate marketing technology processes and integration workflows
• Streamlining creative processes: building robust tools and systems that automate asset lifecycle and streamline creative operations
• Enhancing system observability: implementing metrics, logs, and tracing for high system visibility and performance monitoring
• Strengthening infrastructure reliability: expanding test coverage (unit, integration, end-to-end) and setting up automated testing pipelines
• Architecting scalable solutions: participating in system architecture design, code reviews, and optimizing backend performance

Skills

Node.js

TypeScript

NestJS

PostgreSQL

Redis

BullMQ

RabbitMQ

SQS

REST API integrations

Docker

CI/CD

Jest

Tools

Drizzle

Prisma

TypeORM

Typed ORM

Job description

SKELAR is seeking a Middle Node.js Developer for our partner company Duomo. You will design and grow backend systems powering a Christian-tech product, with focus on MarTech automation, asset lifecycle tooling, and observability.

Apply your Node.js/TypeScript expertise to scale services, improve reliability, and integrate 3rd-party REST APIs. The role emphasizes architecture design, code reviews, and robust testing, with opportunities for career growth and impact across a rapidly growing product