Senior Fullstack Engineer

We’re looking for a Senior Full-Stack Engineer to help us build and evolve internal tools that support business operations across the organization. You’ll be part of a product-focused team, taking full ownership of feature delivery — from initial concept through deployment to production. It’s a hands-on role where both code quality and product thinking matter.

Key responsibilities

• Design and develop internal applications using React, TypeScript, and NestJS

• Own backend and frontend features from planning to production

• Maintain a clean and scalable application architecture

• Write unit and integration tests, ensuring production reliability

• Manage infrastructure in AWS (ECS, RDS, etc.) using Docker and Terraform

• Fix bugs, maintain and refactor legacy code where necessary

• Follow security, compliance, and coding best practices

  
  

Ideal candidate profile

• Experience in FinTech, payments, banking, or e-commerce projects

• Strong knowledge of TypeScript, Node.js, NestJS

• Experience with React and building modern frontends

• Understanding of relational databases (MySQL, PostgreSQL, MariaDB)

• Skilled in schema design, query optimization, and performance tuning

• Familiarity with microservice and event-driven architectures

• Hands-on with AWS services (ECS, CloudWatch, RDS, IAM, S3, VPC)

• Experience using Terraform for infrastructure as code

• Practical experience with testing (Jest) and CI tools (GitHub Actions, GitLab CI)

• Strong grasp of SOLID principles, design patterns, and modular architecture

• English: Upper-Intermediate

  
  

Bonus skills & mindset

• Passion for clean, maintainable code and long-term architecture

• Proactive approach to problem solving

• Awareness of application security and data protection

• Comfortable in a collaborative, cross-functional environment

  
  

Conditions

• Work model: Remote

• Contract type: B2B

• Duration: 3-6 months with a possibility of extension

• Salary: 120-140 pln/h

Recruitment steps

1. Phone call with Recruiter

2. Interview with Client's team

3. Decision and feedback