Job Details

Senior Backend Engineer - User Account Management



Software Development



Employee type


Offer Salary


Job Description

Codility is on a mission to unlock the world’s engineering potential.

As a Senior Backend Engineer, you will take an active role in shaping a product made for engineers by engineers to evaluate engineers.

We are a product-led company with a very experienced and talented engineering team that you can exchange with and learn from.

If you are driven by business impact and you love working on complex problems in a product that millions of people use, this is for you !

Location: Poland (100% remote)
Note that we currently only consider candidates based in Poland. Your application will be rejected automatically if you are based in any other country.

What you will do.

  • Shape and implement our user & permission management system to unlock new use cases and offerings
  • Helping the UAM team modernise and optimise our authentication solutions and offer more flexibility to our clients with permission policies
  • Writing reusable, testable, production ready, observable and efficient code using Python
  • Designing and implementing low-latency, high-availability, and performant applications
  • Testing what you code and contributing to how it runs, is deployed, and scaled
  • Integrating user-facing elements developed by front-end developers with server-side logic
  • Implementation of security and data protection by design
  • Integrating data storage solutions
  • Performance tuning, improvement, balancing, usability, automation
  • Collaborating with the Product, Research and Design Teams in order to understand end user requirements for the implementation of new software features

Who you are.

  • You have demonstrable experience as a Python Developer working for a Product-led/SaaS organisation
  • You are proficient in designing & developing Web Services (REST)
  • You have demonstrable exposure to working on B2B and B2C products
  • Good understanding of public cloud services and modes of operation (Preferably AWS), FastAPI, Application Development and pushing products to the cloud
  • Strong familiarity with Architecture patterns
  • Strong understanding of modern software development best practices like Trunk Based Development, Continuous Delivery, TDD, etc. 

We would love if you:

  • possess good knowledge of Identity and Access Management principles and Authentication protocols (OpenID connect and Auth2)
  • have experience using AI assisted tooling for development

Codility's Tech Stack.

  • Frontend: ES2018, React, Redux, styled-components, Jest
  • Backend: Python 3.8, Django, Golang
  • Database: PostgreSQL, Redshift, DynamoDB
  • Continuous Deployment/Tools: Gitlab/GitlabCI, PyCharm, Goland
  • Infrastructure: Kubernetes (EKS), Istio, Prometheus stack, AWS, Chef

How we behave.

We're human. Our diversity and unique experience make us strong. We allow ourselves to be vulnerable and treat one another with grace. We take ownership. We expect one another to take initiative and trust each person to make decisions based on the best available data. We have passion, perseverance and urgency to hit our goals and work together to create the best outcomes. We think big. We innovate and challenge the status quo to maximize the value we deliver to our users. We constantly experiment with new ways to drive excellence. We're real. We are honest with ourselves and one another. We listen, speak up, and are ready to change our minds.


At Codility, we know that great work isn’t done without a phenomenal team. We are always looking to hire the absolute best talent and recognize that diversity in our experiences and backgrounds is what makes us stronger. We insist on an inclusive culture where everyone feels safe to contribute and help us innovate. We hire candidates of any race, color, ancestry, religion, national origin, sexual orientation, gender identity, age, marital or family status, disability, or veteran status. These differences are what enable us to work towards the future we envision for ourselves, our product, our customers, and our world.

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