Senior Full Stack Developer

Job start: As soon as possible
Lodz, Poland

Job description

*The recruitment team is not speaking Polish, so please apply in English! Thanks!*

Are you eager to bring and develop your skillset as a Full Stack Developer with a structured and agile team? Are you keen to do this in an international, trust-based, transparent start-up environment where everyone is encouraged to speak up? Would you like to see the tools you help build used in $7 billion worth of real construction projects in 1500+ cities?
If this sounds like you, read on! 

LetsBuild is looking for a brilliant, dedicated senior Full Stack Developer to join one of our agile development teams. 



Working in a fast-growing scale-up, you will need to be flexible as your role will touch upon different areas. Regardless of the tasks assigned, you will be able to influence the direction you want to take. 

Some of your tasks will include:
  • Working with all parts of the development process (collaborating with the product owner, coding, testing and delivering production-ready features).
  • Architecting microservice-based systems.
  • Building and consuming RESTful/GraphQL APIs.
  • Building backend in Ruby on Rails and C#.
  • Building frontend in React.
  • Testing new stacks and experimenting with various tools and technologies.Driving PoCs and projects.
  • Creating integrations between different systems.
  • Maintaining our cloud-based infrastructure.
  • As a senior, we count on you to coach our juniors.


To be successful at LetsBuild, you have to master the following technical skills:

  • A general understanding of software architecture and best practices.
  • A robust set of computer science skills – and a willingness to learn more.
  • Substantial experience as a developer (no matter which languages).
  • Worked with relational databases (PostgreSQL, MS SQL Server etc.).
  • C#, NodeJS server, ReactJS, Java, Ruby on Rails experience is a plus.
  • Microservices architecture.
  • RabbitMQ messaging.

It is not crucial that you tick off all the boxes on this list or that you’re equally talented in frontend and backend. What counts is your experience as a developer and that you know how to apply your knowledge to the given tech stack and languages.


To be successful at LetsBuild, you have to master the following personal skills:

  • Integrity, dedication, proud of what you do.
  • Collaborative and willing to spend time with your colleagues and have fun.
  • Entrepreneurial mindset and have hands-on experience with both server and client code.
  • Creative with the ability to break out of the box.


We also expect from you have downloaded a Free Trial of our products (APROPLAN & GenieBelt), tested the Apps and browsed our websites before applying, so you know what kind of company we are and what we do.


What you will get in return: 

  • Being part of the exciting growth journey of one of the fastest-growing SaaS companies in the construction sector.
  • Work in an office located in Lodz, in a house where you can feel at home
  • Feel the great working atmosphere of a young, dynamic and international team.
  • Training & Development plan to further develop your skills to build out your career.
  • A lot of work flexibility in a trust-based environment.