{"id":41622,"url":"https://alion.io/job/leandata-senior-full-stack-engineer","title":"Senior Full-Stack Engineer","company":{"id":8208,"name":"LeanData","domain":"leandata.com","url":"https://alion.io/company/leandata","size_band":"201-500","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Ashby","truth_index":null},"role":"Backend","role_family":"Backend","seniority":"senior","employment_type":"full_time","work_mode":"hybrid","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["Santa Clara, United States"],"countries":["US"],"hiring_countries":[],"hiring_countries_total":0,"salary":{"min":140000,"max":200000,"currency":"USD","period":"year","gross":null,"usd_annual":200000},"salary_estimate":null,"experience_years_min":null,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"CI/CD","optional":false},{"name":"Node JS","optional":false},{"name":"PostgreSQL","optional":false},{"name":"Rest API","optional":false},{"name":"TypeScript","optional":false},{"name":"Apex","optional":true},{"name":"JavaScript","optional":true},{"name":"Lightning Web Components","optional":true},{"name":"Visualforce","optional":true}],"status":"live","first_seen_at":"2026-08-04T17:33:24Z","employer_posted_date":"2026-08-14","last_verified_at":"2026-10-17T18:50:41Z","board_verified":true,"closed_at":null,"days_open":74,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":74},"description":"This role flexes to where you're strongest. Some of our work is deep in our established platform: the Salesforce managed package and orchestration systems, where modern and legacy code live side by side. Some is “greenfield”, including new AI and agent-based products. Both share the same expectations: ship fast without letting new work introduce new bugs, favor reuse over duplication, and keep quality and maintainability first-class. Across all of it, we build with AI. We expect senior engineers to use AI tooling fluently across the software development lifecycle, from spec and build through review and test, and to help the team get better at how we apply it.\nIn this role you'll:\nDesign, build, and ship features end to end, from spec through deployment.\nOwn significant technical work and drive best practices and standards across the team.\nUse AI tooling fluently across the SDLC and improve how the team applies it.\nDebug and resolve production issues across the stack, across modern and legacy code.\nRequired experience you bring\nHands-on experience building and shipping full-stack web applications to production.\nFluency with AI-assisted development tooling across the SDLC, and the judgment to use it well.\nExperience designing scalable systems and services, including data models, interfaces, and service boundaries.\nSound judgment on technical trade-offs, from architecture down to implementation.\nA track record of shipping regularly with CI/CD and iterative review processes.\nStrong TypeScript and experience with modern JS frameworks\nComfort in a large, mature codebase that mixes modern and legacy code.\nClear written and verbal communication that turns ambiguity into direction the team can act on.\nAdditional experience (preferred)\nExperience building customer-facing or agent-based AI products.\nBackend experience with Node.js and Express, and relational databases like PostgreSQL.\nExperience designing and consuming REST APIs and working with asynchronous services.\nGeneral understanding of cloud-based systems, deployments, and cross-platform products.\nA track record of modernizing legacy frontends.\nSalesforce platform experience (nice to have)\nSolid Apex/Salesforce experience: triggers, SOQL, governor limits, bulkification, test patterns.\nSalesforce Platform Developer certification.\nISV or managed-package experience.\nVisualforce or Lightning Web Components (LWC).\nWhat we value\nYou treat quality and 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