Senior FullStack Python & JS Developer -DEU

United States | Sept. 27, 2026

Report as Closed

Company: Cryoport Systems

Country: United States

Salary: $120,000 - $180,000

Type: Onsite

Employment: Full-time

Description: Cryoport Systems is the life science industry’s most trusted provider of supply chain solutions for temperature-sensitive materials, serving biopharmaceutical, IVF and surrogacy and animal health organizations around the world. Cryoport Systems’ proprietary Cryoport Express®shippers, Cryoportal®Logistics Management Platform, leading-edge Smartpak™Condition Monitoring System and geo-sensing technology paired with unparalleled logistics expertise and 24/7/365 customer support, make Cryoport Systems the end-to-end temperature controlled supply chain partner that you can trust. POSITION SUMMARY You maintain and improve existing services for data processing, data persistence and data transport via APIs. To scale up our software environment, you review, refactor and extend existing implementations. Additional software components are to be conceptualized and implemented to optimize our operations processes. A broad set of technologies is involved: Web frontends (Flask, Jinja, Bootstrap), API interaction with external systems (REST), Publish/Subscribe based messaging (MQTT), continuous and event-driven data processing, partially multi-threaded and/or concurrent and database operations. PRIMARY RESPONSIBILITIES (include but are not limited to) • Understand and maintain existing services; troubleshooting and bugfixing • Optimize implementations for higher performance and robustness • Refactor codebase, extract cross-project dependencies to libraries • Increase test coverage (Unit tests and integration tests) • Interact with and embed external services, third-party libraries • Develop, deploy and maintain services for internal processes COMPETENCIES & PERSONAL ATTRIBUTES • Advanced python developer; write efficient, well-understandable code • Good understanding of concurrent processing and scalable applications • Knowledge about common data exchange concepts, e.g. REST, MQTT • Experience in writing PyUnit tests and Integration tests; concept of mocking • Confident usage of SQL and noSQL databases (MariaDB, Redis) • (Debian) Linux CLI usage; Docker; Git version control system • Team-player spirit with strong self-learning abilities • Good communication skills, good English level spoken and written QUALIFICATIONS AND EDUCATION REQUIREMENTS • Min. 5 years of professional experience in object oriented programming • Min. 4 years of professional experience with python

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