Senior Backend Engineer

pbAbout myTomorrows /b /pbrOntdek of deze vacature goed bij u past door alle informatie hieronder te lezen.brpmyTomorrows is a global health tech company dedicated to breaking down barriers for patients seeking treatment options. /ppWe strive to enable earlier and better treatment access by bridging the gap between those searching for possibleoptions,and the companies whodevelopthem. We work closely with patients, healthcare professionals, trial sites, patient advocacy groups, and BioPharma – connecting key stakeholders in the drug development ecosystem. /ppWe’ve developed a cutting-edge AI-powered technology platform that simplifies and streamlines access to drugs in development. To support our users and clients, we have a range of industry-expert specialized teams ready to help. Our services include clinical trial patient recruitment, Expanded Access Program management and Real-World Data collection. /ppWith a global footprint spanning 134 countries, to date we’ve supported over 17,000 patients, 3,000 physicians and 350 sites, earning the trust of 60+ BioPharma companies. In October 2025, we closed a €25M investment with Avego Healthcare Capital to fuel our global ambitions and scale the business. /ppJoin us in shaping the future of treatment access - making tomorrow’s therapies accessible for people who need them today. /ppbThe opportunity: Senior Backend Engineer /b /ppAs a Senior Backend Engineer, you will be responsible for developing and maintaining the platform infrastructure that powers our products. You will work closely with our Frontend Engineers, DevOps Engineers, and other stakeholders to design and build scalable, reliable, and high-performance products. /ppGiven that most of our team is located in the Netherlands, we only consider candidates for this position who live within commuting distance to our office in Amsterdam. /ppbWhat you\'ll do in this role: /b /pullipDesign and implement scalable and reliable backend systems and infrastructure to support our products /p /lilipDevelop and maintain our micro-services to expose platform functionality to internal and external clients /p /lilipCollaborate with development and quality assurance teams to ensure high availability, scalability, and security of our systems /p /lilipCollaborate with DevOps Engineers to ensure the continuous delivery and deployment of software products /p /lilipWork with software developers to identify and implement improvements to our platform architecture and functionality /p /lilipDevelop and maintain documentation of our systems and processes /p /lilipMentor and train junior members of the backend team /p /lilipKeep up-to-date with the latest trends and technologies /p /li /ulpbWhat you bring to the table: /b /pullipProficiency in Python programming language /p /lilip4+ years of experience in the related field /p /lilipExperience with relational databases such as MySQL, PostgreSQL, or Oracle /p /lilipExperience with the cloud platforms (AWS, Azure or GCP) /p /lilipExperience with containerization technologies such as Docker and Kubernetes /p /lilipExcellent problem-solving skills and ability to work independently and as part of a team /p /lilipStrong communication skills and the ability to work with stakeholders across the organization /p /lilipExcellent English communication skills /p /li /ulpbWhat succes in the first six months looks like: /b /pullipYou’ve built trust with Product, Frontend, and DevOps peers and taken clear ownership of 2-3 domain APIs/services, including stewardship of their contracts and SLAs. /p /lilipYou’ve established an API-first workflow: starting from use cases, you propose and socialize OpenAPI specs, align on naming and conventions, then implement in FastAPI with Pydantic models. /p /lilipYou’ve delivered impactful API features end-to-end (design → implementation → tests → docs) that are consumed by internal and external clients without hand-holding. /p /lilipYou’ve raised API robustness: strong request/response validation, consistent error models, pagination and idempotency where appropriate, and backward-compatible versioning enforced via automated contract tests in CI (Ruff, UV, Prek). /p /lilipYou’ve improved the reliability and performance of our service by adding meaningful observability (metrics, logs, tracing) and defining SLIs/SLOs for key endpoints—reducing 5xx rates and improving p95 latency. /p /lilipYou’ve made safe database changes in MySQL with SQLAlchemy migrations, optimized critical queries, and contributed to data access patterns involving DynamoDB or Neo4j while keeping API contracts stable. /p /lilipYou’ve strengthened the security of APIs (authN/authZ boundaries, scoped tokens, least-privilege access, secrets management, rate limiting) and documented the approach. /p /lilipYou’ve written clear API documentation and examples (e.g., snippets/collections), shared knowledge with the team, and mentored junior engineers so others can build on your work. /p /li /ulpbCurrent tech stack: /b /ppWe are fully cloud-native, leveraging AWS and adopting a Lean, API-first product development approach driven by modern cloud technologies and thoughtful design practices. /ppOur backend applications are built using Python, FastAPI, Pydantic, and SQLAlchemy (MySQL). On the front end, we predominantly develop with Angular. To ensure code quality and a consistent release pipeline, we employ GitHub Actions for CI/CD along with tools like Renovate, Ruff, UV, and Prek. /ppWe containerize our applications using Docker and Docker Compose. We continue to expand our capabilities in knowledge graphs (Neo4j) and database technologies (MySQL, DynamoDB). /ppbWhat we offer: /b /pullipImpactful work that helps patients gain access to potentially lifesaving treatments. /p /lilipInternational work environment, scale-up energy and a flat organizational structure that encourages creativity and accountability. /p /li /ulullipCompetitive salary, annual performance bonus and an Employee Stock Option Plan. /p /li /ulullipGreat career development opportunities in a fast-growing company. /p /li /ulullipLearning and development budget alongside internal knowledge sharing sessions. /p /li /ulullipAttractive pension plan, full premium covered by myTomorrows. /p /li /ulullipHybrid working model. /p /li /ulullipPolicies to support working parents. /p /li /ulullipHealthy lunch at the thriving Amsterdam office. /p /li /ulullipUnlimited access to professional guidance by certified psychologists via OpenUp /p /li /ulullipEnjoy monthly events hosted by our vibrant Culture Club as well as an annual ‘myTomorrowland’ company-wide celebration! /p /li /ulpbEqual opportunities /b /ppmyTomorrows is an Equal Opportunity Employer and, beyond upholding discrimination-free practices, we are committed to cultivating a workplace where difference and diversity are protected and celebrated. xgiwjmb The best work comes from our best selves, and we go to great lengths in supporting our team members to be just that. /pbr