Senior Backend Developer .NET (Polish required)

Location Warsaw, Mokotów
Employment type Full-time (permanent or contract)
Offer description

We are looking for ambitious professionals, who can join our team in the Senior Backend Developer role, a team player who cares not only about getting things done but also about software architecture, code quality and maintainability. We’re looking for a senior-level developer, but we welcome specialists at different levels of experience.

LeanCode is a software studio based in Warsaw (Poland) with a strong focus on building great products that matter. We are a team of 60+ skillful professionalsOur clients represent different industries from banking and insurance, through retail and wellbeing products up to SaaS solutions. This gives our team plenty of room to explore new businesses and master challenging domains. Our mission is to solve real-life problems using cutting-edge technologies.


We work for companies from all over the world (at the moment that is: Poland, Germany, UK, the USA and Australia). We join forces with the clients at the very early stage of the process. Thanks to that we have a substantial impact on not only the organizational aspects of the project but also on how the developed product actually works and looks like. This approach requires very close cooperation with the clients, including frequent workshops and daily meetings with them.


There’s a catch in this offer though… You’ll probably have to learn how to play table soccer or table tennis if you join us ;)


What will you do ?

  • Design systems using Domain Driven Design;

  • Design systems using event-based architecture with strong CQRS approach;

  • Design cloud infrastructure (Azure, GCP);

  • Design systems that leverage both relational and non-relational (RavenDB, CosmosDB, Firestore) databases;

  • Automate cloud infrastructure using IaC technologies like Terraform;

  • Work on our application framework available publicly on GitHub;

  • Deploy and maintain applications using container technologies like Docker & Kubernetes;

  • You will have the ability to create internal tools in different technologies like Rust, Go or other;

  • Design CI/CD processes.

Required skills
  • 5+ years of experience in designing, implementing and supporting backend applications;

  • Deep knowledge of C# & .NET Core and related technologies (ASP.NET Core, EFCore);

  • Experience in relational and non-relational databases;

  • Experience with container-based technologies like Docker & Kubernetes;

  • Experience with Azure and IaC approach;

  • Good command of English (written and spoken);

  • Ability to constantly learn new technologies.


We give extra points for:

  • Proactive approach and community involvement;

  • Analytical skills, a strong business focus;

  • Linux knowledge,

  • Experience in cloud-based systems other than Azure;

  • Experience with CI/CD services;

  • Experience in designing RESTful & GraphQL-based APIs;

  • Knowledge of other technologies (e.g. React, TypeScript, Dart/Flutter);

  • Open source contributions;

  • DevOps mindset.

  • Work at our HQ (Warsaw, Służew metro station) or remotely;

  • Comfortable, spacious office with a large backyard (we have frequent BBQ parties);

  • Specialty coffee from a local roastery (yes, we are coffee freaks…);

  • Knowledge sharing during weekly Backend team meetings;

  • Frequent technical talks from various areas of software development (system architecture, Domain Driven Design, mobile, frontend & backend trends, UX);

  • We play table tennis and table soccer.


Recruitment process: 

  1. Submit an application form below.

  2. Get through the technical interview with our Backend Team Leader. At this stage we may require writing some live code. 

  3. Join the call with our CTO to discuss the potential cooperation and your future development.

  4. Welcome on board to one of probably the fastest growing Digital Product Studios in Poland.

Last modified Monday, November 14, 2022