{"id":1591259,"url":"https://alion.io/job/optilon-senior-back-endpython-developer","title":"Senior Back-end/Python Developer","company":{"id":710375,"name":"Optilon","domain":"optilon.com","url":"https://alion.io/company/optilon-2","size_band":"51-200","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Schema","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":["Malmö, Sweden"],"countries":["SE"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":{"min_usd":56000,"max_usd":154000,"period":"year","method":"global_role_cell_scaled_by_country","sample_n":5573},"experience_years_min":5,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":".NET","optional":false},{"name":"Azure","optional":false},{"name":"C#","optional":false},{"name":"CI/CD","optional":false},{"name":"Docker","optional":false},{"name":"Flask","optional":false},{"name":"Kubernetes","optional":false},{"name":"LLM","optional":false},{"name":"Model Context Protocol","optional":false},{"name":"MS SQL","optional":false},{"name":"Pandas","optional":false},{"name":"PostgreSQL","optional":false},{"name":"Python","optional":false},{"name":"RAG","optional":false},{"name":"SQL","optional":false},{"name":"Vue.js","optional":false},{"name":"JavaScript","optional":true}],"status":"live","first_seen_at":"2026-09-28T11:08:36Z","employer_posted_date":"2026-09-28","last_verified_at":"2026-10-07T01:09:10Z","board_verified":true,"closed_at":null,"days_open":8,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":8},"description":"We are looking for a Senior Backend / Python Developer to design, build, and evolve scalable backend services and data-intensive systems supporting our Supply Chain planning solutions.\nThis is a hands-on senior engineering role with a strong focus on Python backend development, APIs, databases, system design, and data processing. You will take technical ownership of backend components and contribute to architectural decisions, platform modernization, and the development of reliable and maintainable production systems.\nYou will work with modern data and AI-enabled solutions, including data pipelines and services supporting AI/ML workloads. While experience with AI technologies is valuable, the core of this position is strong software engineering and backend development in Python.\nThe role is suited to an experienced developer who enjoys solving complex technical problems, building production-grade software, and contributing to both hands-on implementation and long-term technical direction.\nBackend & Python Development\nDesign, develop, test, and maintain production-grade backend services and APIs primarily using Python\n\nTake technical ownership of backend components throughout their lifecycle, from design and implementation to deployment and continuous improvement\n\nDesign scalable, maintainable, and well-structured application architectures\n\nDevelop data-intensive services for ingestion, processing, transformation, and serving of data\n\nWork extensively with relational databases, particularly PostgreSQL and Microsoft SQL Server\n\nDesign efficient data-access patterns\n\nApply strong object-oriented design, software engineering principles, and clean coding practices\n\nIdentify and resolve performance, scalability, and reliability bottlenecks\n\nEnsure high software quality through automated testing, code reviews, documentation, and engineering best practices\n\nWork with CI/CD and modern development and deployment practices\n\nContribute to .NET-based environments and integrations where relevant\n\nWhile the primary focus is backend development, opportunities to contribute to our Vue 3 frontend also exist\n\nData Engineering & AI-Enabled Systems\nDevelop backend services and data pipelines supporting AI/ML training, evaluation, and inference workloads\n\nSupport the integration and productionization of AI/ML models, engines and services\n\nWork with technologies and patterns such as RAG, vector databases, and MCP\n\nCollaborate with application owners to translate application and data requirements into reliable technical solutions\n\nContribute to the design of AI-ready data architectures while maintaining strong software engineering standards\n\nArchitecture & System Design\nPlay an active role in backend architecture and technical design decisions\n\nDesign systems for scalability, maintainability, reliability, security, and operational efficiency\n\nDefine and promote engineering patterns, standards, and best practices for Python and backend development\n\nEvaluate frameworks, libraries, platforms, and technologies based on technical and business requirements\n\nMake pragmatic architectural decisions that balance delivery needs with long-term maintainability\n\nDocument architectural decisions, interfaces, and important technical designs\n\nSystem Evolution & Modernization\nModernize existing and legacy backend implementations\n\nRefactor complex or brittle components into maintainable, well-tested solutions\n\nImprove the reliability, observability, performance, and scalability of existing systems\n\nSupport migrations toward modern service and data architectures\n\nIdentify and address technical debt in a structured and pragmatic way\n\nHelp teams balance short-term delivery requirements with long-term technical sustainability\n\nTechnical Leadership & Collaboration\nMentor and technically support mid-level and junior developers\n\nPerform and contribute to code and architecture reviews\n\nSupport technical planning, estimation, and solution design\n\nWork closely with product, consultancy, data, AI, and infrastructure teams\n\nProvide technical expertise in client-facing consultancy and pre-sales activities\n\nCommunicate technical concepts, architectural decisions, risks, and trade-offs clearly to both technical and non-technical stakeholders\n\nRequired Qualifications\nAt least 5 years of professional software development experience with Python, with a substantial focus on backend development\n\nMaster of Science (M.Sc.) degree in Computer Science, Software Engineering, Data Science, Engineering, or another relevant technical field\n\nStrong knowledge of Python and modern Python software development practices\n\nDemonstrated experience designing and developing production-grade backend services and APIs\n\nStrong understanding of software architecture, object-oriented programming, design patterns, and clean-code principles\n\nStrong experience with SQL and relational databases, preferably including PostgreSQL Microsoft and/or SQL Server\n\nExperience designing and implementing data-intensive applications, data processing solutions, or data pipelines\n\nExperience with automated testing, version control, code reviews, and CI/CD practices\n\nExperience troubleshooting and optimizing production systems for performance, reliability, and scalability\n\nExperience working with modern deployment environments, preferably including containers and cloud-based infrastructure\n\nAbility to independently drive technical tasks from requirements and design through implementation and production\n\nStrong communication skills and the ability to collaborate effectively across technical and business teams\n\nProfessional working proficiency in English\n\nMeriting Qualifications\nExperience with Flask, Pandas or other comparable Python backend frameworks\n\nExperience with asynchronous Python and distributed or event-driven systems\n\nExperience with workflow orchestration and data engineering platforms\n\nExperience with Docker, Kubernetes, and cloud platforms\n\nExperience with Azure and the Microsoft technology ecosystem\n\nExperience with .NET/C#\n\nExperience with AI/ML production systems and model integration\n\nExperience with RAG architectures, vector databases, LLM-based applications, and MCP\n\nExperience with observability, monitoring, logging, and production operations\n\nExperience with Vue 3 or other modern frontend technologies\n\nExperience in Supply Chain, planning, optimization, or related data-intensive business domains\n\nPrevious experience mentoring developers or acting as a technical lead\n\nWhat We Are Looking For\nYou are an experienced Python developer with a strong software engineering foundation and a track record of building reliable backend systems. You are comfortable working across application logic, APIs, databases, data processing, and system architecture, and you understand what it takes to operate software successfully in production.\nYou enjoy hands-on development but can also step back and consider the broader architecture. You can make pragmatic technical decisions, explain trade-offs, improve existing systems, and help other developers grow.\nExperience with data engineering and AI-enabled applications is highly valuable, but deep Python and backend engineering expertise is the foundation of this role.","description_format":"text","description_chars":7245,"description_truncated":false,"requirements":{"experience_years_min":5,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":{"level":"master","optional":false},"security_clearance":false,"languages":[{"language":"English","level":"Upper-Intermediate (B2)","optional":false}]},"benefits":[],"hiring_locations":[],"hiring_excludes":[],"relocation_offered":false,"industries":["Artificial Intelligence","Transportation & Logistics","Supply Chain"],"lifecycle":[{"event":"open","at":"2026-10-01T16:18:32Z"}],"visa":[],"liveness":{"score":86,"band":"hot","label":"Hiring now","p_open":1,"p_active":0.86,"p_room":1,"age_days":7,"expected_fill_days":40,"reasons":["conf:2","win:early"],"computed_at":"2026-10-06T05:45:30Z"},"pay":null,"html_url":"https://alion.io/job/optilon-senior-back-endpython-developer","json_url":"https://alion.io/job/optilon-senior-back-endpython-developer.json","meta":{"generated_at":"2026-10-07T02:06:36Z","cache_seconds":300,"methodology":"https://alion.io/methodology","terms":"https://alion.io/terms","contact":"https://alion.io/contact","api":"https://alion.io/developers","about":"Alion is a live layer of people, companies and AI agents: who they are, whether they are real and active right now, what they do and how to work with them, readable by people and by agents and paid per call.","catalog":"https://alion.io/catalog.json","usage":{"tier":"crawler","counted_by":"address","units_charged":1,"used_today":3445,"day_limit":5000,"remaining_today":1555,"minute_limit":60,"resets_at":"2026-10-08T00:00:00Z"}},"offers":[{"id":"company.slices","title":"One company in depth, by slice","status":"live","price":{"credits":0.02,"usd":0.002,"plus_per_slice":{"credits":0.05,"usd":0.005}},"unit":"per company, plus each slice with data","note":"the employer in depth","call":{"mcp_tool":"get_company","arguments":{"id":710375},"rest":"https://alion.io/mcp/rest/get_company?id=710375"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Foptilon-senior-back-endpython-developer"},{"id":"market.stats","title":"A market slice: pay, demand and time to fill","status":"live","price":{"credits":1,"usd":0.1},"unit":"per slice","note":"pay, demand and time to fill for this role and place","call":{"mcp_tool":"market_stats"},"human":"https://alion.io/catalog?offer=market.stats&for=job%2Foptilon-senior-back-endpython-developer"},{"id":"job.search","title":"Open jobs by role, technology, place, pay and visa","status":"live","price":{"credits":0.02,"usd":0.002},"unit":"per posting in a list","note":"similar open postings","call":{"mcp_tool":"search_jobs"},"human":"https://alion.io/catalog?offer=job.search&for=job%2Foptilon-senior-back-endpython-developer"},{"id":"company.verify","title":"Is this company real and active right now","status":"pilot","price":null,"unit":"per company","request":{"url":"https://alion.io/catalog/request","method":"POST","body":"{\"offer\": \"company.verify\", \"for\": \"job/optilon-senior-back-endpython-developer\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Foptilon-senior-back-endpython-developer"}]}