{"id":3530234,"url":"https://alion.io/job/fairmint-senior-software-engineer","title":"Senior Software Engineer","company":{"id":2309849,"name":"Fairmint","domain":"fairmint.com","url":"https://alion.io/company/fairmint","size_band":"11-50","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":"hybrid","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["New York, United States"],"countries":["US"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":{"min_usd":141000,"max_usd":262000,"period":"year","method":"role_seniority_country_remote_cell","sample_n":3667},"experience_years_min":null,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"AI Agents","optional":false},{"name":"Amazon S3","optional":false},{"name":"AWS","optional":false},{"name":"AWS Lambda","optional":false},{"name":"Cursor","optional":false},{"name":"DeFi","optional":false},{"name":"Model Context Protocol","optional":false},{"name":"Node JS","optional":false},{"name":"PostgreSQL","optional":false},{"name":"React.js","optional":false},{"name":"TypeScript","optional":false},{"name":"JavaScript","optional":true}],"status":"live","first_seen_at":"2026-09-09T01:00:31Z","employer_posted_date":null,"last_verified_at":"2026-09-09T01:00:31Z","board_verified":false,"closed_at":null,"days_open":53,"trust":{"level":"not_scored","repost_count":null,"flags":[],"days_open":53},"description":"Fairmint is looking for a Senior Software Engineer to build scalable fintech and DeFi systems, develop product features, optimize AWS infrastructure, apply AI-assisted development, ensure security and compliance, guide architecture, and mentor colleagues.\n\nYou will build and ship scalable product features with React, TypeScript, Node.js, and PostgreSQL. You will use AI-assisted development tools, design and optimize AWS infrastructure, integrate onchain and traditional financial systems, maintain security and regulatory compliance, contribute to architecture decisions, and mentor others in AI-assisted engineering practices.\n\nResponsibilitiesBuild and ship scalable features with React, TypeScript, Node.js, and PostgreSQL\nUse Cursor, MCP, and AI agents to accelerate development and enhance product features\nDesign and optimize AWS cloud infrastructure using Lambda, Amplify, S3, and API Gateway\nIntegrate onchain systems with traditional financial systems\nEnsure security and regulatory compliance across deployed systems\nContribute to software architecture decisions\nMentor colleagues on AI-assisted development practices\n\nRequirementsHave at least 5 years of professional software development experience\nDemonstrate advanced skills in React, TypeScript, Node.js, and PostgreSQL\nHave solid experience with AWS Lambda and Amplify\nShow 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