Python Software Engineer -Infrastructure team

About the role

Your job: In this position, you will join the Python Infrastructure and Performance (PIP) team, which currently consists of two members and the team lead. The team's vision is a codebase that we would be proud to open-source. The team cares a lot about doing things properly and sets high standards in their work in terms of maintainability, performance, and security. Taking a broader view, this team is responsible for improving the codebase on a systemic level, writing proposals for architectural changes, and facilitating discussions with other development teams (the primary customers). Your challenges: Continuously improve the maintainability and quality of our Python codebase. Example: modeling all the requests and responses in our HTTP endpoints Remove technical debt by modernizing legacy code, upgrading dependencies and carrying out large-scale migrations and refactoring. Example: migrating Pydantic from v1 to v2 Monitor and improve the performance of our API endpoints and of our background jobs. Example: rewriting performance-critical code in Rust Improve the performance and correctness of our test suite. Work on security improvements together with other security specialists in the company. Examples: Single Sign-On, security improvements to authentication tokens Collaborate with other developers to learn about what problems and opportunities they see. Building new features will not be the primary focus of this team. We use the following technologies and tools: Languages: Python (3.13), PostgreSQL Libraries: pydantic, sqlalchemy, typing, requests, logging, flask, fastapi, pytest Tools: mypy, ruff, Sentry, Prometheus, Grafana, Loki Who are you? You are committed to high engineering standards; you care about making things robust and easy to maintain. Making other developers' lives easier makes you happy. You don't just want things to work: you also want to understand how and why they work. You love diving deeply into technical details and finding creative solutions to complex problems. You can be pragmatic, but also truly enjoy doing things the right way. You like working in a team and taking ownership of your projects. You can communicate and coordinate with colleagues across teams effectively. You also: Have excellent backend development skills in Python or similar languages. Have significant experience working on larger production codebases. Are experienced with web technologies. Have experience with typing (mypy) in Python. Have a good working knowledge of Linux, git, and the command line. Live in The Netherlands or are willing to relocate, and are in possession of a valid work permit (if you're a non-EU citizen). Nice to have: Are comfortable with SQL and relational databases, ideally PostgreSQL. Experience in optimizing performance of database queries and application code. Having worked with distributed systems before. Important note : we understand that studies show women may only apply for roles when they feel they meet 100% of the requirements, therefore, we strongly encourage you to apply even if you don't check every box, as we are looking for passionate individuals with potential and a willingness to grow. Who are we? Channable was founded in 2014 in the heart of Utrecht. We are now a strong team of 320+ diverse individuals, and more than 40+ nationalities. Joining Channable means you're looking for a bit more than just a job. Diverse as we are, we all share our love for growth, to help, to take ownership, and create an awesome journey together. Feel free to take a further look at who we are here and on our Instagram or Linkedin ! Wanna get to know us even more? Give our Culture Playbook a read. What do we do? Channable is a fast-growing B2B SaaS platform that offers a fully integrated way to market your products online. We empower marketers and online businesses to manage, scale, and optimize their marketing Want to read more about our development adventures? Then visit our inspiring tech blog: https://tech.channable.com/ And if this makes you enthusiastic, you can also take a look at some of our open-source work at https://github.com/channable to get a feeling of how we work together and what our code looks like. What do we offer? Gross monthly salary ranging from € 4.300 to € 6,000 b ased on a 40-hour work week. This salary range reflects our career framework. Your final role level will be determined throughout the recruitment process, based on alignment with this framework. 8% holiday allowance - 8% of your yearly salary, which is paid together with your May salary. Stock Appreciation Rights: eligible employees can financially profit from Channable's success. Annual L&D budget of €1000 to spend on anything you want to learn. You can take full advantage of this to grow professionally. Saving for old age - we have a savings scheme for old age, which can accrue up to 5% of your monthly salary or you can get an additional +2.5% to your monthly base salary. Company-wide performance bonus, up to

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