Python Backend Developer

Proactively map components known to be susceptible to scaling issues (e.g., slowness, lack of async processing) and propose effective improvements. Analyze customer settings including employees, invoicing, and integrations - and map them to new equivalents to inform automation strategies. Own the design and implementation of the self-service customer portal backend (REST API). Maintain and improve our cloud infrastructure, including Kubernetes EKS and PostgreSQL RDS. Develop, optimize, and maintain CI/CD pipelines using GitHub Actions and related tools. Integrate with third-party HR APIs to provide seamless data flows. Work closely with Product Owners to define, scope, and deliver high-impact features. Support internal stakeholders (Customer Success, Operations) to ensure smooth workflows. Expand and improve our existing transactional system.

What you'll be doing (daily)

Designing, implementing, and maintaining backend services and REST APIs that support scale and performance. Monitoring and improving infrastructure reliability, performance, and scalability. Building and managing CI/CD pipelines to streamline development and deployment. Troubleshooting and resolving technical challenges proactively. Collaborating with engineering and product teams to deliver high-quality features., Impact at scale: You'll work on a mission-critical project that directly contributes to successful customer migrations and platform growth. Growth & development: Take ownership, drive improvements, and grow your skills in a supportive environment. Flexible work model: Hybrid/remote setup with a collaborative, balanced work culture. Modern tech stack: Work with cloud-native infrastructure, CI/CD automation, and integrations with third-party services. Collaborative culture: Be part of a team that values initiative, quality engineering, and continuous improvement.

Work with great people Tianran Li Product Owner "Epassi is a youngster who is energetic and brings the best to the people. Best things working at Epassi is that we have good benefits. You can always learn something new and implement it in practice." Aleksandra Wnuk Backend Developer "Work environment at Epassi is healthy and not stressful, and you can take part here in many interesting projects." Marcin Gołubienko Full Stack Developer "During my work experience, I've got opportunity to touch every aspect of software delivery - not only from coding point of view." Alexandra Andersson Customer Service Agent "The best thing about working at Epassi is colleagues. It is easy to get along with everyone, regardless of age and origin! My team has a good team spirit and we work well together to meet our goals!" Great Place to Work

Company events

Do you have experience in Scalability?, Are you interested in joining of Europe's fastest growing companies? Do you want to impact the wellbeing of millions of users?, 5+ years of professional Python experience working with complex codebases. Hands-on experience with Python web frameworks (FastAPI, Django, or Flask). Strong knowledge of AWS services, Kubernetes, and PostgreSQL. Solid understanding of relational databases and SQL query optimization. Experience working with CI/CD pipelines and tooling (e.g., GitHub Actions, CircleCI, GitLab CI). Strong testing mindset with experience in testing frameworks such as pytest. A proactive, hands-on approach to problem-solving. Experience taking projects from design to delivery, including architectural decision-making.

Your track record

Successfully delivered end-to-end backend projects. Actively improved engineering standards and practices in past roles. Known for taking initiative and improving existing systems where possible. Comfortable working independently and collaborating within a team.

Your language profile

Good command of written and spoken English.

If yes, join us to make an impact in a fast-paced and dynamic environment where you'll play a key role in driving financial accountability, supporting strategic decisions, and enabling sustainable growth. Epassi's purpose is to boost everyday well-being. We are a leading provider of employee benefit solutions across Europe. We were established in Finland in 2007, and in 2008 we were the first company to launch a mobile-payable employee benefit payment solution in Europe. Since then, we have consistently grown, diversifying our products and introducing our services into new markets. Epassi has been awarded by the Financial Times as one of the fastest-growing companies in Europe on multiple occasions.