We’re looking for a Back-End Software Engineer to build and maintain back end of our Client’s platform, design databases, manage data pipelines, and integrate APIs. You’ll work closely with Product, Data, and Design teams to make the platform faster, more reliable, and user-friendly.
This project belongs to the Technology, Information, and Internet domain. The Client is building an operating system for performance advertising domain – one platform where media buying, creative production, analytics, and automation work together seamlessly. Marketing teams use it to launch campaigns, optimize across channels, and collaborate efficiently.
Responsibilities:
- Build and maintain back-end services using Node.js (NestJS) and serverless frameworks
- Design and manage SQL and NoSQL databases (PostgreSQL, MySQL, MongoDB, Redis)
- Maintain and scale APIs and data pipelines, including ETL and data processing workflows
- Work with Product, Data, and Design teams to improve the platform and user experience
Requirements:
- 3+ years of experience in software development
- Strong back-end development expertise with Node.js (NestJS and serverless frameworks)
- Experience with client-side development
- Deep knowledge of database design and architecture, including:
- – SQL databases (PostgreSQL, MySQL)
- – NoSQL systems (MongoDB, Redis)
- Proven experience scaling and maintaining third-party API integrations, including ETL workflows, data ingestion, and processing pipelines
- Hands-on experience with major cloud platforms such as AWS, GCP, or Azure
- Strong understanding of Agile methodologies, sprint planning, and the full software development life cycle
- Ability to collaborate closely with Product, Data, and Design teams to improve user experience
- Excellent communication skills and a strong team-oriented mindset
- English level – Upper-Intermediate or higher
Will be a plus:
- Knowledge of React or similar frameworks
- Infrastructure-as-Code experience
We offer:
- Remote-first work model with flexible working hours (we provide all equipment)
- Comfortable and fully equipped offices in Lviv and Rzeszów
- Competitive compensation with regular performance reviews
- 18 paid vacation days per year + all state holidays
- 12 days of paid sick leave per year without a medical certificate + extra paid leave for blood donation
- Fixed monthly health & wellness compensation, applicable to: medical insurance; fitness and sports activities
- English, German, and Polish language courses
- Corporate subscription to learning platforms, regular meetups and webinars
- Friendly team that values accountability, innovation, teamwork, and customer satisfaction
- Inclusive environment where everyone feels valued and treated equally. We proudly partner with VeteranHub to support Ukrainian veterans
- We are committed to supporting Ukraine and actively participate in charity initiatives