{"id":2250434,"url":"https://alion.io/job/paychex-senior-full-stack-engineer-react-python","title":"Senior Full-Stack Engineer (React & Python)","company":{"id":1764039,"name":"Paychex","domain":"paychex.com","url":"https://alion.io/company/paychex-com","size_band":"1001-5000","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Jibe","truth_index":{"grade":"B","score":77,"open_postings":59,"ghost_share":0,"stale_share":0.932,"repost_share":0,"time_to_fill_p50_days":39,"computed_at":"2026-10-14T06:34:16Z"}},"role":"Backend","role_family":"Backend","seniority":"senior","employment_type":null,"work_mode":"on_site","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["Belgrade, Serbia"],"countries":["RS"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":{"min_usd":39000,"max_usd":113000,"period":"year","method":"global_role_cell_scaled_by_country","sample_n":6426},"experience_years_min":5,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"AWS","optional":false},{"name":"AWS Lambda","optional":false},{"name":"CI/CD","optional":false},{"name":"CircleCI","optional":false},{"name":"Datadog","optional":false},{"name":"Figma","optional":false},{"name":"GitHub Actions","optional":false},{"name":"GraphQL","optional":false},{"name":"Incident Management","optional":false},{"name":"Material UI","optional":false},{"name":"Python","optional":false},{"name":"React.js","optional":false},{"name":"JavaScript","optional":true}],"status":"live","first_seen_at":"2026-09-18T14:55:00Z","employer_posted_date":"2026-10-11","last_verified_at":"2026-10-15T00:43:37Z","board_verified":true,"closed_at":null,"days_open":26,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":26},"description":"Paychex is reimagining how businesses manage their workforce by bringing payroll, HR, benefits, and advisory services together into a single connected HCM platform. As Paychex and Paycor come together, we're combining innovative technology, data-driven insights, AI, and human expertise to help organizations work smarter, support their people, and achieve better business outcomes. This is an exciting time to join our team as we continue to invest in innovation, simplify client experiences, and shape the future of work. At Paychex, you'll have the opportunity to grow your career, make a meaningful impact, and be part of something bigger as One Paychex.Responsibilities\nBuild and lead frontend architecture using React, MUI, and high-fidelity Figma design integrations\nOwn full stack feature delivery with Python on AWS serverless (Lambda) and clean GraphQL API integration\nWork closely with Product and Design Agency to define roadmaps, create epics & stories,\nArchitect and integrate GraphQL APIs to power dynamic content and product experiences across the platform\nCollaborate on AI-powered features and intelligent automation interfaces, with rigor in verifying AI-assisted work\nMentor junior engineers, model clean code and BDD/TDD practices, and elevate team performance\nIntegrate with our fully automated CI/CD pipeline (CircleCI, GitHub Actions)\nHelp shape our design system and contribute to a scalable, componentized UI foundation\nQualifications\n5+ years full stack development experience - focus on React and Python/AWS serverless\nStrong testing and clean coding mindset (BDD, TDD, SOLID)\nDevOps-aware mindset (CI/CD with CircleCI and GitHub Actions, observability with Datadog or equivalent, rollback readiness)\nBackground in AI-powered features and intelligent UI flows\nExperience leading product delivery: roadmaps, epics, planning, collaboration\nExperience building and supporting distributed, event-driven systems, including integrations with third-party services and designing for resilience and failure recovery.\nStrong sense of production ownership, including deployment, monitoring, incident management, and operational support.\nSolid testing and verification mindset, with a focus on delivering reliable, high-quality software in environments where accuracy and correctness are critical.\nExperience using AI-powered tools\nWhat's in it for you?\nA flexible work philosophy\nCompany paid private health insurance\nCompany paid life and disability insurance\nPaid leave for illness, birth parents, non-birth parents, elder caregivers, marriage, adoption of a child and bereavement\nInclusive and accessible Employee Assistance Program (EAP) to help with everyday challenges\nChristmas and Easter bonuses\nOpportunity for strengthening expertise and skills through Paychex’s learning platform, including lessons in English\n\nNot sure if you meet every requirement?\nAt Paychex, we know that great talent comes in many forms. If you're passionate about the role but don't check every box, we still encourage you to apply. You might be the right fit - either for this position or another opportunity with us.\n\nPaychex is an equal opportunity employer. We are committed to fostering a respectful and inclusive workplace where all individuals are treated fairly and evaluated based on their qualifications, experience, and merit. We comply with all applicable federal, state, and local laws prohibiting discrimination in employment.\nBuild and lead frontend architecture using React, MUI, and high-fidelity Figma design integrations\nOwn full stack feature delivery with Python on AWS serverless (Lambda) and clean GraphQL API integration\nWork closely with Product and Design Agency to define roadmaps, create epics & stories,\nArchitect and integrate GraphQL APIs to power dynamic content and product experiences across the platform\nCollaborate on AI-powered features and intelligent automation interfaces, with rigor in verifying AI-assisted work\nMentor junior engineers, model clean code and BDD/TDD practices, and elevate team performance\nIntegrate with our fully automated CI/CD pipeline (CircleCI, GitHub Actions)\nHelp shape our design system and contribute to a scalable, componentized UI foundation\n5+ years full stack development experience - focus on React and Python/AWS serverless\nStrong testing and clean coding mindset (BDD, TDD, SOLID)\nDevOps-aware mindset (CI/CD with CircleCI and GitHub Actions, observability with Datadog or equivalent, rollback readiness)\nBackground in AI-powered features and intelligent UI flows\nExperience leading product delivery: roadmaps, epics, planning, collaboration\nExperience building and supporting distributed, event-driven systems, including integrations with third-party services and designing for resilience and failure recovery.\nStrong sense of production ownership, including deployment, monitoring, incident management, and operational support.\nSolid testing and verification mindset, with a focus on delivering reliable, high-quality software in environments where accuracy and correctness are critical.\nExperience using AI-powered tools","description_format":"text","description_chars":5099,"description_truncated":false,"requirements":{"experience_years_min":5,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":null,"security_clearance":false,"languages":[]},"benefits":["Flexible schedule","Health insurance"],"hiring_locations":[],"hiring_excludes":[],"relocation_offered":false,"industries":[],"lifecycle":[{"event":"open","at":"2026-10-11T02:18:19Z"}],"visa":[],"liveness":{"score":48,"band":"ok","label":"Likely open","p_open":1,"p_active":0.533,"p_room":0.9,"age_days":25,"expected_fill_days":39,"reasons":["conf:1","stale_co","win:mid","comp:brand"],"computed_at":"2026-10-14T06:34:16Z"},"pay":null,"html_url":"https://alion.io/job/paychex-senior-full-stack-engineer-react-python","json_url":"https://alion.io/job/paychex-senior-full-stack-engineer-react-python.json","meta":{"generated_at":"2026-10-15T02:49:33Z","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":4172,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-10-16T00:00:00Z"}},"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":1764039},"rest":"https://alion.io/mcp/rest/get_company?id=1764039"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Fpaychex-senior-full-stack-engineer-react-python"},{"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%2Fpaychex-senior-full-stack-engineer-react-python"},{"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%2Fpaychex-senior-full-stack-engineer-react-python"},{"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/paychex-senior-full-stack-engineer-react-python\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Fpaychex-senior-full-stack-engineer-react-python"}]}