{"id":742928,"url":"https://alion.io/job/vesselbot-senior-python-developer","title":"Senior Python Developer","company":{"id":689391,"name":"VesselBot","domain":"vesselbot.com","url":"https://alion.io/company/vesselbot","size_band":"51-200","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Workable","truth_index":null},"role":"Backend","role_family":"Backend","seniority":"senior","employment_type":"full_time","work_mode":"on_site","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["Marousi, Greece"],"countries":["GR"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":{"min_usd":28000,"max_usd":82000,"period":"year","method":"global_role_cell_scaled_by_country","sample_n":6933},"experience_years_min":null,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"Airflow","optional":false},{"name":"CI/CD","optional":false},{"name":"Django","optional":false},{"name":"Docker","optional":false},{"name":"FastAPI","optional":false},{"name":"Flask","optional":false},{"name":"Git","optional":false},{"name":"Python","optional":false},{"name":"SQL","optional":false},{"name":"ETL/ELT","optional":true}],"status":"live","first_seen_at":"2026-07-30T00:00:00Z","employer_posted_date":"2026-07-30","last_verified_at":"2026-10-18T01:59:48Z","board_verified":true,"closed_at":null,"days_open":80,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":80},"description":"Join Us as a Senior Python Developer\nWho We Are\nWe are an innovative startup dedicated to making the world more sustainable through cutting-edge technology solutions. Our flagship product provides visibility into greenhouse gas (GHG) emissions, empowering FTSE 500 companies to understand and reduce their carbon footprint.\nJob Description\nWe are looking for a Senior Python Developer to join our engineering team. The ideal candidate will play a key role in analyzing, documenting, and formalizing our existing and legacy codebase while also contributing to ongoing development efforts. You will manage a team of developers and collaborate with the Product Manager to improve the functionality, maintainability, reliability, and scalability of our systems. Close interaction with Customer Success and End-User is also a critical part of the role..\nResponsibilities\nReview, document, and refactor the existing codebase (legacy and current).\nCreate and maintain technical documentation, including architecture diagrams, API references, and developer guides.\nEnsure consistency and standardization across projects.\nCollaborate with team members to identify areas for improvement in code quality and structure.\nSupport development and maintenance of applications built with Apache Airflow, Django, Flask, and FastAPI.\nContribute to code reviews, testing, and CI/CD processes.\nStay updated with best practices in Python development and recommend improvements.\nRequirements\n8+ years of professional experience as a Python developer.\nStrong understanding of Python programming, design patterns, and software engineering principles.\nExperience with Apache Airflow (DAGs, orchestration, scheduling).\nHands-on experience with Django, Flask, and/or FastAPI frameworks.\nProficiency with RESTful API design, SQL/ORMs, and relational databases.\nFamiliarity with Git, CI/CD pipelines, Docker, and cloud environments.\nExcellent communication skills with the ability to produce clear technical documentation.\nStrong problem-solving skills and attention to detail.\nNice to Have\nExperience migrating or modernizing legacy systems.\nKnowledge of data engineering concepts and ETL workflows.\nFamiliarity with microservices architectures.\nContributions to open-source projects or technical writing.\nBenefits\nWhat We Offer\nCompetitive compensation and benefits package.\nOpportunity to contribute to the development of a logistics data platform.\nWork with a forward-thinking team on cutting-edge data and AI solutions.\nA collaborative, innovative, and growth-oriented culture.\nContributing to global decarbonization efforts.\nReady to make a difference?\nApply now to join a team of passionate individuals working together to shape a better 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