Senior Backend Engineer – Node.js, TypeScript & AWS (Hybrid, Wroclaw, Poland)

Nigel Frank International; Warszawa; On-site; PLN 180,000 - 240,000; Full time

Job summary

Nigel Frank International is looking for an experienced Backend Engineer to help develop secure, cloud-native applications and microservices; you will contribute to a major modernization of an IAM platform and ensure resilience at scale.

Responsibilities include designing and maintaining backend microservices with Node.js and TypeScript, building serverless solutions on AWS, implementing test automation, and collaborating with engineers, architects and SREs to uphold code quality and production

Qualifications

• 5+ years’ experience in backend or full-stack software development.
• Hands-on experience with Node.js and TypeScript.
• Experience with AWS cloud services and distributed systems.
• Test automation using Jest, Postman or Playwright.
• Knowledge of CI/CD and production deployment practices.
• Fluency in Polish and English.
• IAM/CIAM, OAuth 2.0, OpenID Connect and JWT.
• Infrastructure as Code (AWS CDK or Terraform).
• Kubernetes, Grafana, Prometheus or Loki.
• Backend experience with Java or Python.

Responsibilities

• Design, develop and maintain backend microservices using Node.js and TypeScript.
• Build serverless solutions using AWS Lambda, API Gateway, DynamoDB and EventBridge.
• Develop automated integration and end-to-end tests.
• Contribute to IAM services, identity platform migration and secure third-party integrations.
• Maintain production applications and support continuous delivery.
• Collaborate with engineers, architects and SRE specialists on technical design and code quality.

Skills

Node.js

TypeScript

AWS

CI/CD

Test automation

Microservices

Security best practices

English proficiency

Polish proficiency

IAM/CIAM concepts

Tools

Jest

Postman

Playwright

Terraform

AWS CDK

Kubernetes

Grafana

Prometheus

Loki

Job description

We are looking for an experienced Backend Engineer to develop secure, cloud-native applications and microservices, contributing to a major modernisation of an identity and access management (IAM) platform.

Key responsibilities:

• Design, develop and maintain backend microservices using Node.js and TypeScript.
• Build serverless solutions using AWS Lambda, API Gateway, DynamoDB and EventBridge.
• Develop automated integration and end-to-end tests.
• Contribute to IAM services, identity platform migration and secure third-party integrations.
• Maintain production applications and support continuous delivery.
• Collaborate with engineers, architects and SRE specialists on technical design and code quality.

What we are looking for:

• 5+ years’ experience in backend or full-stack software development.
• Strong, recent hands-on experience with Node.js and TypeScript.
• Practical experience with AWS cloud services and distributed, asynchronous systems.
• Test automation skills using tools such as Jest, Postman or Playwright.
• Understanding of CI/CD and production deployment practices.
• Fluency in both Polish and English.
• IAM or CIAM solutions, OAuth 2.0, OpenID Connect and JWT.
• Infrastructure as Code, particularly AWS CDK or Terraform.
• Kubernetes, Grafana, Prometheus or Loki.
• Additional backend experience with Java or Python.