{"id":4025366,"url":"https://alion.io/job/vesper-medior-software-developer","title":"Medior Software Developer","company":{"id":22680,"name":"Vesper","domain":"vesper.ai","url":"https://alion.io/company/vesper","size_band":"51-200","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Recruitee","truth_index":null},"role":"Backend","role_family":"Backend","seniority":"middle","employment_type":null,"work_mode":"on_site","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["Amsterdam, Netherlands"],"countries":["NL"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":null,"experience_years_min":2,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"CI/CD","optional":false},{"name":"Git","optional":false},{"name":"GitHub","optional":false},{"name":"Laravel","optional":false},{"name":"MySQL","optional":false},{"name":"PHP","optional":false}],"status":"live","first_seen_at":"2026-11-04T09:41:57Z","employer_posted_date":"2026-11-04","last_verified_at":"2026-11-10T16:41:17Z","board_verified":true,"closed_at":null,"days_open":6,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":6},"description":"We are looking for a highly motivated Software Developer who wants to grow and to help Vesper get to the next level.\nAs a Software Developer at Vesper you will continuously be working on improving the product, the team, and yourself, either by excelling in (parts of) our products, identifying existing technical challenges and owning them, joining customer interviews, or by joining backlog reviews and representing the development team’s interests. You are proactive and passionate about the team and product, either as a specialist or generalist, and will get both the freedom and responsibility to bring Vesper to the next level.\nData Integration: Design, develop, and implement data ingestion processes to integrate data from various sources, including APIs, databases, and third-party services.\n\nData Quality Assurance: Implement data validation and cleansing processes to ensure the accuracy and reliability of integrated data.\n\nPerformance Optimization: Monitor and optimize the performance of data processing workflows and database queries to enhance system efficiency.\n\nDeploy and run your own code in a production environment\n\nIdentify existing technical challenges and take ownership to create a solution\n\nSeek and seize opportunities that will add value for our customers\n\nActively help junior developers in your team to grow and offer guidance where needed\n\nProactively look for ways to improve our applications and the development team as a whole\n\nWhat you will bring\nBachelor’s degree or equivalent experience in Computer Science or related field\n\n2-4 years experience in back-end development\n\nSolid knowledge of our development ecosystem: PHP (Laravel), Databases (MySQL), Git/Github, CI/CD\n\nFluent in English\n\nStrong communication skills and teamwork\n\nAnalytical skills to really get to the bottom of problems and find the best solution(s)\n\nWhat you get\nInternational team of 80+ people from all over the world and an inclusive culture\n\nA flat company structure with an entrepreneurial environment with lots of autonomy and trust\n\nTrust and autonomy to perform in your role\n\nPossibility to implement new ideas and work on additional projects\n\nYou can have a big impact on the organisation\n\nFantastic nurturing team with a collaborative spirit, hungry for growth and knowledge\n\nProfessional development opportunities that will help you and Vesper grow\n\nEnvironment that supports both personal and collective learning\n\nA chance to see your work make a real difference in the real world and change a traditional business impacting every day of our lives\n\nGreat hangouts with brilliant people\n\nA beautiful canal-view office located in the heart of Amsterdam\n\nSome additional cool perks - MacBook Pro, fun monthly team activities, flexible office hours, Friday drinks, company sport tournaments, and more than that!","description_format":"text","description_chars":2828,"description_truncated":false,"requirements":{"experience_years_min":2,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":null,"security_clearance":false,"languages":[{"language":"English","level":"Advanced (C1)","optional":false}]},"benefits":["Apple Macbook","Professional development"],"hiring_locations":[],"hiring_excludes":[],"relocation_offered":false,"industries":["Data Providers & Datasets","Financial Data & Market Intelligence"],"lifecycle":[{"event":"open","at":"2026-11-10T16:41:17Z"}],"visa":[],"liveness":{"score":86,"band":"hot","label":"Hiring now","p_open":1,"p_active":0.86,"p_room":1,"age_days":6,"expected_fill_days":43,"reasons":["conf:3","win:early"],"computed_at":"2026-11-10T19:54:10Z"},"pay":null,"html_url":"https://alion.io/job/vesper-medior-software-developer","json_url":"https://alion.io/job/vesper-medior-software-developer.json","meta":{"generated_at":"2026-11-10T19:54:10Z","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":11696,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-11-11T00:00:00Z"}},"offers":[{"id":"company.slices","title":"One company in depth, by slice","status":"live","price":{"credits":0.1,"usd":0.01,"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":22680},"rest":"https://alion.io/mcp/rest/get_company?id=22680"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Fvesper-medior-software-developer"},{"id":"market.stats","title":"A market slice: pay, demand and time to fill","status":"live","price":{"credits":2,"usd":0.2},"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%2Fvesper-medior-software-developer"},{"id":"job.search","title":"Open jobs by role, technology, place, pay and visa","status":"live","price":{"credits":0.1,"usd":0.01},"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%2Fvesper-medior-software-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/vesper-medior-software-developer\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Fvesper-medior-software-developer"}],"agent":{"mcp":"https://alion.io/mcp/jobs","mcp_open":"https://alion.io/mcp/open","next":[{"tool":"get_job","arguments":{"id":4025366}},{"tool":"search_jobs","arguments":{"company":"vesper.ai","detail":"compact"}},{"tool":"match_people","arguments":{"job_id":4025366},"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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