{"id":941422,"url":"https://alion.io/job/lengow-senior-python-developer-hfx","title":"Senior Python Developer","company":{"id":52949,"name":"Lengow","domain":"lengow.com","url":"https://alion.io/company/lengow","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":null,"work_mode":"on_site","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["Nantes, France"],"countries":["FR"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":{"min_usd":44000,"max_usd":75000,"period":"year","method":"role_seniority_country_remote_cell","sample_n":182},"experience_years_min":null,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"AI Agents","optional":false},{"name":"ArgoCD","optional":false},{"name":"Celery","optional":false},{"name":"CI/CD","optional":false},{"name":"Clean Architecture","optional":false},{"name":"Django","optional":false},{"name":"Docker","optional":false},{"name":"GitHub","optional":false},{"name":"GitHub Actions","optional":false},{"name":"Linux","optional":false},{"name":"PostgreSQL","optional":false},{"name":"Python","optional":false},{"name":"Windows","optional":false},{"name":"AWS","optional":true},{"name":"Datadog","optional":true},{"name":"FastAPI","optional":true},{"name":"Jira","optional":true},{"name":"Kubernetes","optional":true},{"name":"RabbitMQ","optional":true},{"name":"Redis","optional":true}],"status":"live","first_seen_at":"2026-10-28T18:10:23Z","employer_posted_date":"2026-10-28","last_verified_at":"2026-11-01T15:10:00Z","board_verified":true,"closed_at":null,"days_open":3,"trust":{"level":"ok","repost_count":0,"flags":[],"days_open":3},"description":"Lengow is a leader in intelligent e-commerce solutions that help brands and retailers drive profitable growth across the digital shelf. With powerful feed management, global price monitoring, and robust data capabilities, Lengow’s comprehensive SaaS product suite enables merchants to amplify product visibility online, outrun competition with informed pricing, multiply sales on marketplaces, and monitor brand presence among distributors. Since 2009, Lengow has fueled digital growth for over 3,600 customers across thousands of marketing and sales channels in over 60 countries.\nOur Tech Team\nThe Tech, Data, and Product team comprises 70+ people from diverse backgrounds, working in our offices in Nantes, Paris, and Barcelona. Our products are developed thanks to six autonomous product Teams, each working on a specific business domain. The teams are led by a Product Manager and Engineer manager working with a dedicated small team of developers (from 4 to 8)\nPurpose of the job:\nWe are seeking a highly skilled and experienced Senior Python Developer. The ideal candidate will have extensive experience in Python development, a deep understanding of clean architecture principles, and a strong background in CI/CD practices, particularly using GitHub Actions and ArgoCD. You will play a key role in designing, developing, and maintaining our software applications, ensuring they are scalable, maintainable, and robust.\nYour main tasks would be as follows :\nDevelopment:\n- Design, develop, and maintain high-quality Python applications and services.\nClean Architecture:\n- Implement and advocate for clean architecture principles to ensure a scalable, maintainable, and testable codebase.\nCI/CD Pipeline Management:\n- Design, implement, and maintain CI/CD pipelines using GitHub Actions and ArgoCD to automate workflows, deployments, and infrastructure management.\nCode Review and Mentorship:\n- Conduct code reviews, provide constructive feedback, and mentor junior developers to uphold best practices and coding standards.\nTesting:\n- Develop and maintain unit, integration, and end-to-end tests to ensure software quality and reliability.\nTechnical environment:\nLangage : Python\nFramework : Django, Celery, FastAPI\nDB : PostgreSQL, Redis, AWS\nOutils : GitHub, Jira, Datadog, Docker, RabbitMQ\nHiring process:\nPhone call with Alexandre our HR\nInterview with one of our Engineering Manager\nTechnical test and restitution with Clément Head of Engineering and members of the tech team.\nOffer letter\nRequirements\nWe are looking for someone with the following experiences and skills:\nExperiences :\n4 years as Software developer in Python or other Object oriented programming language\nProven ability to integrate AI Agents into the development lifecycle (e.g., automated code reviews, agentic testing, or AI-driven CI/CD) to enhance developer productivity and software quality.\nSkills & soft skills :\nPython \nDjango, PostgreSQL, Celery, Docker \nDesign & Architecture\nLeadership\nCurious / Autonomous / Good analytical skills / Force of proposal / Problem Solver\nAt Lengow, we value diversity in all its forms and are committed to equal opportunities. All applications are considered based on skills and qualifications, including those from candidates with disabilities.\nBenefits\nJoining Lengow is also an opportunity to benefit from many advantages :\nTicket restaurant 8 euros by day\nMalakoff Humanis Private insurance & Prevoyance.\n3 Remote days per week\nFlexible hours\nBike mileage allowances or 50% of transportation tickets.\nRemote allowances\nProfessional events (Devoxx, Meetup ...) and regular internal cohesion.\nWeekly Happy Break on Thursday Evening at the office with food and beverage\nSyntec forfait jours with RTT - 218 annual working days, ie minimum 9 days off on top of 5 weeks legal paid leave\nChoose your laptop OS. You can work on MacOS, Windows or Linux.","description_format":"text","description_chars":3870,"description_truncated":false,"requirements":{"experience_years_min":null,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":null,"security_clearance":false,"languages":[]},"benefits":[],"hiring_locations":[],"hiring_excludes":[],"relocation_offered":false,"industries":["E-commerce Platforms","Supply Chain & Logistics Software"],"lifecycle":[{"event":"open","at":"2026-09-15T18:29:38Z"},{"event":"open","at":"2026-09-25T15:35:50Z"}],"visa":[],"liveness":{"score":86,"band":"hot","label":"Hiring now","p_open":1,"p_active":0.86,"p_room":1,"age_days":3,"expected_fill_days":36,"reasons":["conf:2","win:early"],"computed_at":"2026-11-01T06:10:25Z"},"pay":null,"html_url":"https://alion.io/job/lengow-senior-python-developer-hfx","json_url":"https://alion.io/job/lengow-senior-python-developer-hfx.json","meta":{"generated_at":"2026-11-01T15:25:13Z","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_verified","counted_by":"address","units_charged":1,"used_today":23613,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-11-02T00:00:00Z"}},"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":52949},"rest":"https://alion.io/mcp/rest/get_company?id=52949"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Flengow-senior-python-developer-hfx"},{"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%2Flengow-senior-python-developer-hfx"},{"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%2Flengow-senior-python-developer-hfx"},{"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/lengow-senior-python-developer-hfx\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Flengow-senior-python-developer-hfx"}],"agent":{"mcp":"https://alion.io/mcp/jobs","mcp_open":"https://alion.io/mcp/open","next":[{"tool":"get_job","arguments":{"id":941422}},{"tool":"search_jobs","arguments":{"company":"lengow.com","detail":"compact"}},{"tool":"match_people","arguments":{"job_id":941422},"note":"people open to offers who fit this vacancy"}],"note":"The same data through MCP tools: https://alion.io/mcp/open needs no sign-in (compact searches, postings, people); https://alion.io/mcp with an Alion account has everything. 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