{"id":115590,"url":"https://alion.io/job/firstup-sr-software-engineer-fullstack-remote-2","title":"Sr. Software Engineer, Fullstack - Remote","company":{"id":5280,"name":"Firstup","domain":"firstup.com","url":"https://alion.io/company/firstup","size_band":null,"is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Lever","truth_index":null},"role":"Backend","role_family":"Backend","seniority":"senior","employment_type":"full_time","work_mode":"remote","remote_scope":"stated_countries","remote_scope_basis":"board_field","remote_working_hours":null,"hiring_geo_confidence":"structured","locations":[],"countries":[],"hiring_countries":["US"],"hiring_countries_total":1,"salary":{"min":120000,"max":190000,"currency":"USD","period":"year","gross":null,"usd_annual":190000},"salary_estimate":null,"experience_years_min":null,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"Claude","optional":false},{"name":"Copilot","optional":false},{"name":"Node JS","optional":false},{"name":"React.js","optional":false},{"name":"Ruby","optional":false},{"name":"Ruby on Rails","optional":false},{"name":"Shift-Left","optional":false},{"name":"Shift-Left Security","optional":false},{"name":"TypeScript","optional":false},{"name":"JavaScript","optional":true}],"status":"live","first_seen_at":"2026-07-28T21:51:16Z","employer_posted_date":"2026-07-28","last_verified_at":"2026-10-03T23:15:30Z","board_verified":true,"closed_at":null,"days_open":67,"trust":{"level":"ok","repost_count":1,"flags":[],"days_open":66},"description":"Job Summary\nWe're looking for a Senior Full Stack Engineer who thrives at the intersection of craft and scale. You'll design and deliver large-scale, multi-tenant cloud services - with a relentless focus on availability, fault-tolerance, and elegant architecture. You'll set the bar for engineering quality and help elevate those around you.\nResponsibilities\nCore Engineering & Ownership: Build and own scalable SaaS applications end-to-end - frontend, backend, and data layers. Write production-grade code that is reliable, readable, efficient, and testable. Raise the bar through thoughtful code reviews and comprehensive documentation.\n\nSystem Architecture: Design future-ready architectures and proactively close gaps before they become problems.\n\nPerformance & Reliability: Drive system availability and performance - investigate, analyze, and resolve reliability issues across the stack. Recognize opportunities and advocate for better performance and efficiency of software, systems, and processes across teams.\n\nShift Left Testing & Quality: You champion a rigorous 'shift-left' quality culture, embedding comprehensive testing-unit, integration, and contract-early and continuously in the development lifecycle, not as an afterthought.\n\nAI Integration: Leverage and advocate for AI-assisted tools (e.g., GitHub Copilot, Claude) to accelerate development while maintaining rigorous engineering judgment and accountability for code correctness.\n\nLeadership: Drive team-wide best practices, conduct quality code reviews, and mentor engineers to elevate overall engineering quality.\n\nCollaboration (Product & Design): Partner with Product and Design to translate requirements into intuitive UI, making informed technical trade-offs in the face of ambiguity.\n\nCollaboration (Engineering Standards): Champion engineering best practices across teams and collaborate on solving complex, high-impact problems.\n\nMinimum Qualifications\nBachelor's degree in Computer Science or related field, or equivalent experience.\n\n5+ years building reliable, performant applications and microservices in production environments. Proven full stack fluency - you're comfortable across frontend, backend, and the database layer.\n\nA polyglot mindset - you evolve with the tech. Familiarity with Ruby on Rails, TypeScript, Node.js, or React.js is a strong plus.\n\nProven full-stack experience across frontend (React.js), backend, and database layers.\n\nTechnical depth in at least one engineering domain: distributed systems, multi-tenant SaaS, application databases, networking, security, serverless, event streaming, or similar.\n\nA genuine drive to build beautiful, intuitive products with the customer always in focus. Innate curiosity - you love learning and have a desire to teach and lift others. Strong communication skills and openness to collaborative idea-sharing across teams.\n\nPreferred Qualifications:\n Core Stack Experience: Familiarity with Ruby (including Ruby on Rails), TypeScript, Node.js, or React.js is a strong plus.","description_format":"text","description_chars":3017,"description_truncated":false,"requirements":{"experience_years_min":null,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":{"level":"bachelor","optional":false},"security_clearance":false,"languages":[]},"benefits":[],"hiring_locations":[{"name":"United States","iso":"US","kind":"country"}],"hiring_excludes":[],"relocation_offered":false,"industries":["Intranet & Knowledge Management"],"lifecycle":[{"event":"open","at":"2026-07-28T21:51:16Z"},{"event":"close","at":"2026-08-26T22:57:55Z"},{"event":"reopen","at":"2026-09-22T20:27:18Z"}],"visa":[],"liveness":{"score":28,"band":"fade","label":"Fading","p_open":1,"p_active":0.641,"p_room":0.44,"age_days":66,"expected_fill_days":58,"reasons":["conf:3","win:tail","crowd:"],"computed_at":"2026-10-03T05:45:00Z"},"pay":{"stated_usd_annual":190000,"is_top_pay":true},"html_url":"https://alion.io/job/firstup-sr-software-engineer-fullstack-remote-2","json_url":"https://alion.io/job/firstup-sr-software-engineer-fullstack-remote-2.json","meta":{"generated_at":"2026-10-04T00:19:01Z","cache_seconds":300,"methodology":"https://alion.io/methodology","terms":"https://alion.io/terms","contact":"https://alion.io/contact","api":"https://alion.io/developers","usage":{"tier":"crawler","counted_by":"address","units_charged":1,"used_today":274,"day_limit":5000,"remaining_today":4726,"minute_limit":60,"resets_at":"2026-10-05T00:00:00Z"}}}