{"id":3405363,"url":"https://alion.io/job/lemonio-senior-back-end-developer","title":"Senior Back-end Developer","company":{"id":4373123,"name":"LemonIO","domain":"lemonio.com","url":"https://alion.io/company/lemonio","size_band":null,"is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":null,"truth_index":null},"role":"Backend","role_family":"Backend","seniority":"senior","employment_type":null,"work_mode":"remote","remote_scope":"stated_countries","remote_scope_basis":"inferred_payroll_markers","remote_working_hours":null,"hiring_geo_confidence":"inferred","locations":[],"countries":[],"hiring_countries":["US"],"hiring_countries_total":1,"salary":null,"salary_estimate":{"min_usd":82000,"max_usd":211000,"period":"year","method":"global_role_seniority_cell","sample_n":7767},"experience_years_min":null,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":".NET","optional":false},{"name":"Angular","optional":false},{"name":"C#","optional":false},{"name":"C++","optional":false},{"name":"Electron","optional":false},{"name":"Ethereum","optional":false},{"name":"Ethers.js","optional":false},{"name":"Firebase","optional":false},{"name":"Flutter","optional":false},{"name":"Go","optional":false},{"name":"JavaScript","optional":false},{"name":"Kubernetes","optional":false},{"name":"Laravel","optional":false},{"name":"Linux","optional":false},{"name":"LLM","optional":false},{"name":"Machine Learning","optional":false},{"name":"Next.js","optional":false},{"name":"Node JS","optional":false},{"name":"PHP","optional":false},{"name":"Python","optional":false},{"name":"React Native","optional":false},{"name":"Ruby","optional":false},{"name":"Rust","optional":false},{"name":"Scala","optional":false},{"name":"Solana","optional":false},{"name":"Svelte","optional":false},{"name":"Swift","optional":false},{"name":"Symfony","optional":false},{"name":"TypeScript","optional":false},{"name":"Unreal Engine","optional":false},{"name":"Viem","optional":false},{"name":"Vue.js","optional":false},{"name":"Wagmi","optional":false},{"name":"WordPress","optional":false},{"name":"AI Agents","optional":true},{"name":"Dart","optional":true},{"name":"Platform Engineering","optional":true},{"name":"React.js","optional":true}],"status":"live","first_seen_at":"2026-10-28T14:06:33Z","employer_posted_date":null,"last_verified_at":"2026-10-28T14:06:33Z","board_verified":false,"closed_at":null,"days_open":1,"trust":{"level":"not_scored","repost_count":null,"flags":[],"days_open":1},"description":"Lemon.io helps companies in the US and Europe hire experienced engineers, from funded startups to teams like Klarna, Retool, and Pinterest. We’ve been doing this since 2015, and more than 1,500 companies have hired engineers through us.\n\nCurrently, we have a few open positions from our client, an AI-native cloud company. AI teams use its platform to run inference on open-source models, fine-tune them and rent large GPU clusters. The fleet is set to grow about 10×; the team won't. That's where you come in.\n\nWho they’re looking for: Site Reliability Engineer, Senior Back-end Developer with Golang, Senior Back-end Developer with Python, AI Infrastructure Engineer, Distributed Storage Engineer, DevOps.\n\nRequirements for Senior Back-end Developers with Golang\n\n5+ years of commercial experience with Golang\n\n2+ years of commercial experience with Kubernetes\n\n1+ year of experience in AI-assisted coding\n\nExperience with distributed systems\n\nRequirements for Senior Back-end Developers with Python\n\n5+ years of commercial experience with Python\n\n2+ years of commercial experience with Linux\n\n2+ years of commercial experience with Kubernetes\n\n1+ year of experience in AI-assisted coding\n\nExperience with distributed systems\n\nYou own problems end-to-end: you spot the issue, design and build the solution, and ship it to production\n\nYou can show the business impact of your work with concrete results (e.g., faster processing, lower costs, more users, fewer incidents)\n\nAdvanced English: you discuss business tasks, explain your decisions, raise issues early, and present yourself and your results well on client calls\n\nYou work full-time remotely and deliver without supervision\n\nYou onboard quickly and start shipping in your first weeks\n\nOther job listings you can check using the application link. You will be redirected to the career page with offers from the client on our website.\n\nHow it works\n\nApply and complete your profile\n\nVerify your role\n\nOnce approved, we match you with a project.\n\nReady? Apply!\n\nNOT YOUR TECH STACK?\n\nWe're placing Senior Developers (4+ yrs commercial experience) across AI Agent Architecture, AI Automation Architecture, AI Engineering, Site Reliability Engineering, Platform Engineering, Enterprise Software Engineering, React & Python, React & Golang, Golang, React & Java, React & Ruby, Ruby, PHP & Vue, Vue & Node.js, React & .NET, Android & iOS, iOS & Swift, Flutter & Firebase, Solutions Engineer, Blockchain (Ethereum/Ethers.js/Wagmi/Viem/Solana), Angular & Node.js, Vue & .NET, Python & Vue, DevOps, MLOps, Data Science, Angular & PHP, Angular & .NET, Symfony & React, Symfony & Vue, Symfony & An gular, Python, Symfony & JavaScript & Next.js & TypeScript, Data Analysis, React & PHP, Data Engineering, Project Management, Product Management, QA Automation, QA Manual, Embedded Software Engineering, React Native & Node, React Native & React, React Native & Ruby, React Native & Python, WordPress, Android, Angular, Python & Node, React & Node.js, Node & TypeScript, Java & Spring, Svelte & Python, Svelte & Node.js, Svelte & TypeScript, Rust, Shopify & JavaScript, Vue & Nuxt, PHP & Laravel, UI/UX Design, Animation, Graphic Design, React & Node & React Native, .NET & C#, Electron, Scala, C++, Unreal Engine & C++, Python & LLM, Unity, or Machine Learning Engineering and more. Reach out and we'll match you.\n\nWe do not provide visa assistance, and our cooperation model does not include the benefits typically offered with direct hire.\n\nWe work with developers from 75+ countries across Europe, Latin America, North America (the U.S. and Canada), selected countries in Asia (Japan, Singapore, South Korea, the Philippines, Indonesia, Malaysia, Vietnam, Thailand, Saudi Arabia, and Israel), Oceania (Australia, New Zealand, and Papua New Guinea), and Africa (including Morocco and South Africa).","description_format":"text","description_chars":3844,"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":[{"name":"United States","iso":"US","kind":"country"}],"hiring_excludes":[],"relocation_offered":false,"industries":[],"lifecycle":[{"event":"open","at":"2026-10-28T16:00:45Z"}],"visa":[],"liveness":{"score":86,"band":"hot","label":"Hiring now","p_open":1,"p_active":0.86,"p_room":1,"age_days":1,"expected_fill_days":29,"reasons":["seen:1","win:early"],"computed_at":"2026-10-30T05:48:23Z"},"pay":null,"html_url":"https://alion.io/job/lemonio-senior-back-end-developer","json_url":"https://alion.io/job/lemonio-senior-back-end-developer.json","meta":{"generated_at":"2026-10-30T12:29:04Z","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":17868,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-10-31T00:00:00Z"}},"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":4373123},"rest":"https://alion.io/mcp/rest/get_company?id=4373123"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Flemonio-senior-back-end-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%2Flemonio-senior-back-end-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%2Flemonio-senior-back-end-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/lemonio-senior-back-end-developer\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Flemonio-senior-back-end-developer"}],"agent":{"mcp":"https://alion.io/mcp/jobs","mcp_open":"https://alion.io/mcp/open","next":[{"tool":"get_job","arguments":{"id":3405363}},{"tool":"search_jobs","arguments":{"company":"lemonio.com","detail":"compact"}},{"tool":"match_people","arguments":{"job_id":3405363},"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. Docs: https://alion.io/developers"}}