{"id":95724,"url":"https://alion.io/job/together-senior-backend-engineer-inference-platform","title":"Senior Backend Engineer, Inference Platform","company":{"id":36054,"name":"Together AI","domain":"together.ai","url":"https://alion.io/company/together","size_band":"501-1000","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Greenhouse","truth_index":{"grade":"A","score":92,"open_postings":71,"ghost_share":0,"stale_share":0.31,"repost_share":0,"time_to_fill_p50_days":55,"computed_at":"2026-10-17T05:46:00Z"}},"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":["San Francisco, United States"],"countries":["US"],"hiring_countries":[],"hiring_countries_total":0,"salary":{"min":200000,"max":290000,"currency":"USD","period":"year","gross":null,"usd_annual":290000},"salary_estimate":null,"experience_years_min":5,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"Multimodal AI","optional":false},{"name":"Python","optional":false},{"name":"Rust","optional":false},{"name":"SGLang","optional":false},{"name":"Together AI","optional":false},{"name":"TypeScript","optional":false},{"name":"vLLM","optional":false},{"name":"CUDA","optional":true},{"name":"CUDA Toolkit","optional":true},{"name":"Cursor","optional":true},{"name":"ElevenLabs","optional":true},{"name":"Fine-tuning","optional":true},{"name":"HPC","optional":true},{"name":"InfiniBand","optional":true},{"name":"Kubernetes","optional":true},{"name":"NCCL","optional":true},{"name":"NVLink","optional":true},{"name":"Pre-training","optional":true},{"name":"Reinforcement Learning","optional":true},{"name":"Triton","optional":true}],"status":"live","first_seen_at":"2025-08-22T18:40:32Z","employer_posted_date":"2026-09-23","last_verified_at":"2026-10-18T01:57:53Z","board_verified":true,"closed_at":null,"days_open":421,"trust":{"level":"stale","repost_count":0,"flags":["stale"],"days_open":420},"description":"About the Role\nTogether AI is building the Inference Platform that brings the most advanced generative AI models to the world. Our platform powers multi-tenant serverless workloads and dedicated endpoints, enabling developers, enterprises, and researchers to harness the latest LLMs, multimodal models, image, audio, video, and speech models at scale.\nIf you get a thrill from optimizing latency down to the last millisecond, this is your playground. You’ll work hands-on with tens of thousands of GPUs (H100s, H200s, GB200s, and beyond), figuring out how to fully utilize every FLOP and every gigabyte of memory.\nYou’ll collaborate directly with research teams to bring frontier models into production, making breakthroughs usable in the real world. Our team also works closely with the open source community, contributing to and leveraging projects like SGLang, vLLM, and NVIDIA Dynamo to push the boundaries of inference performance and efficiency.\nShape the core inference backbone that powers Together AI’s frontier models.\nSolve performance-critical challenges in global request routing, load balancing, and large-scale resource allocation.\nWork with state-of-the-art accelerators (H100s, H200s, GB200s) at global scale.\nPartner with world-class researchers to bring new model architectures into production.\nCollaborate with and contribute to the open source community, shaping the tools that advance the industry.\nA culture of deep technical ownership and high impact - where your work makes models faster, cheaper, and more accessible.\nCompetitive compensation, equity, and benefits.\nResponsibilities \nBuild and optimize global and local request routing, ensuring low-latency load balancing across data centers and model engine pods.\nDevelop auto-scaling systems to dynamically allocate resources and meet strict SLOs across dozens of data centers.\nDesign systems for multi-tenant traffic shaping, tuning both resource allocation and request handling - including smart rate limiting and regulation - to ensure fairness and consistent experience across all users.\nEngineer trade-offs between latency and throughput to serve diverse workloads efficiently.\nOptimize prefix caching to reduce model compute and speed up responses.\nCollaborate with ML researchers to bring new model architectures into production at scale.\nContinuously profile and analyze system-level performance to identify bottlenecks and implement optimizations.\nRequirements\n5+ years of demonstrated experience building large-scale, fault-tolerant, distributed systems and API microservices.\nStrong background in designing, analyzing, and improving efficiency, scalability, and stability of complex systems.\nExcellent understanding of low-level OS concepts: multi-threading, memory management, networking, and storage performance.\nExpert-level programming in one or more of: Rust, Go, Python, or TypeScript.\nKnowledge of modern LLMs and generative models and how they are served in production is a plus.\nExperience working with the open source ecosystem around inference is highly valuable; familiarity with SGLang, vLLM, or NVIDIA Dynamo will be especially handy.\nExperience with Kubernetes or container orchestration is a strong plus.\nFamiliarity with GPU software stacks (CUDA, Triton, NCCL) and HPC technologies (InfiniBand, NVLink, MPI) is a plus.\nBachelor’s or Master’s degree in Computer Science, Computer Engineering, or related field, or equivalent practical experience.\nAbout Together AI\nTogether AI, the AI Native Cloud, is purpose-built for AI engineers. AI application developers get high-performance inference that scales reliably, fine-tuning and reinforcement learning for creating frontier-level specialized models, and pre-training at massive scale for fully custom intelligence, all around a marketplace of leading open models that teams can run, adapt, and own. Trusted by Cursor, Decagon, ElevenLabs, Salesforce, and Zoom, Together serves 400+ trillion tokens a month.\nCompensation\nWe offer competitive compensation, startup equity, health insurance and other competitive benefits. The US base salary range for this full-time position is: $200,000 - $290,000 + equity + benefits. Our salary ranges are determined by location, level and role. Individual compensation will be determined by experience, skills, and job-related knowledge.\nEqual Opportunity\nTogether AI is an Equal Opportunity Employer and is proud to offer equal employment opportunity to everyone regardless of race, color, ancestry, religion, sex, national origin, sexual orientation, age, citizenship, marital status, disability, gender identity, veteran status, and more.\nPlease see our privacy policy at https://www.together.ai/privacy","description_format":"text","description_chars":4698,"description_truncated":false,"requirements":{"experience_years_min":5,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":{"level":"bachelor","optional":false},"security_clearance":false,"languages":[]},"benefits":["Equity","Health insurance"],"hiring_locations":[],"hiring_excludes":[],"relocation_offered":false,"industries":["Cloud Platforms (IaaS & PaaS)","Foundation Models","AI Compute & Inference"],"lifecycle":[{"event":"open","at":"2025-08-22T18:40:32Z"}],"visa":[{"country":"US","licensed_sponsor":true,"evidence":"H-1B filings in 12 months: 48 · green card filings: 1","filings_12m":48,"filings_prev_12m":22,"green_card_filings_12m":1,"median_offered_wage_usd":207398,"route":null,"cap_exempt":false,"checked_at":"2026-10-15T11:24:14+00:00","sources":["US Department of Labor: LCA disclosure data (H-1B, H-1B1, E-3)","US Department of Labor: PERM disclosure data (green cards)"],"filings_for_role_12m":33}],"liveness":{"score":9,"band":"cold","label":"Long shot","p_open":1,"p_active":0.314,"p_room":0.28,"age_days":420,"expected_fill_days":55,"reasons":["conf:3","velocity","win:tail","crowd:"],"computed_at":"2026-10-17T05:46:00Z"},"pay":{"stated_usd_annual":290000,"is_top_pay":true},"html_url":"https://alion.io/job/together-senior-backend-engineer-inference-platform","json_url":"https://alion.io/job/together-senior-backend-engineer-inference-platform.json","meta":{"generated_at":"2026-10-18T03:49:16Z","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":5993,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-10-19T00:00:00Z"}},"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":36054},"rest":"https://alion.io/mcp/rest/get_company?id=36054"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Ftogether-senior-backend-engineer-inference-platform"},{"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%2Ftogether-senior-backend-engineer-inference-platform"},{"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%2Ftogether-senior-backend-engineer-inference-platform"},{"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/together-senior-backend-engineer-inference-platform\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Ftogether-senior-backend-engineer-inference-platform"}]}