{"id":3359842,"url":"https://alion.io/job/fanduel-senior-software-engineer-5","title":"Senior Software Engineer","company":{"id":174501,"name":"FanDuel","domain":"fanduel.com","url":"https://alion.io/company/fanduel","size_band":"1001-5000","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Greenhouse","truth_index":{"grade":"B","score":83,"open_postings":12,"ghost_share":0,"stale_share":0.5,"repost_share":0,"time_to_fill_p50_days":67,"computed_at":"2026-10-29T05:49:05Z"}},"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":["New York, United States"],"countries":["US"],"hiring_countries":[],"hiring_countries_total":0,"salary":{"min":138000,"max":173000,"currency":"USD","period":"year","gross":null,"usd_annual":173000},"salary_estimate":null,"experience_years_min":5,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"GraphQL","optional":false},{"name":"JavaScript","optional":false},{"name":"Kotlin","optional":false},{"name":"React Native","optional":false},{"name":"State Management","optional":false},{"name":"Swift","optional":false},{"name":"TypeScript","optional":false},{"name":"Apache Kafka","optional":true},{"name":"AWS","optional":true},{"name":"Buildkite","optional":true},{"name":"CI/CD","optional":true},{"name":"Dart","optional":true},{"name":"Docker","optional":true},{"name":"Flutter","optional":true},{"name":"Gradle","optional":true},{"name":"Helm","optional":true},{"name":"Java","optional":true},{"name":"Jest","optional":true},{"name":"Kubernetes","optional":true},{"name":"LLM","optional":true},{"name":"React.js","optional":true},{"name":"Spring Boot","optional":true},{"name":"Terraform","optional":true}],"status":"live","first_seen_at":"2026-10-27T18:07:31Z","employer_posted_date":"2026-10-27","last_verified_at":"2026-10-29T07:55:40Z","board_verified":true,"closed_at":null,"days_open":1,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":1},"description":"THE POSITION\nOur roster has an opening with your name on it\nWe are looking for a full stack Senior Software Engineer to lead the design, development, and delivery of high-scale applications. In this role, you will autonomously architect resilient systems, establish modern engineering standards, and collaborate closely with cross-functional partners to drive key technical and product initiatives across the organization. You'll own the frontend architecture of our web and mobile products end to end, while working comfortably across the stack to build and extend the services that power them. This is a senior role: you'll set technical direction, raise the quality bar, and mentor other engineers.\nIn addition to the specific responsibilities outlined above, employees may be required to perform other such duties as assigned by the Company. This ensures operational flexibility and allows the Company to meet evolving business needs. \nTHE GAME PLAN\n Everyone on our team has a part to play\nAutonomously drive sustained business impact across team goals, product capabilities, and technical systems.\nTake ownership of semi-annual and annual technical objectives, consistently delivering high-quality, mission-critical systems on schedule.\nDefine and shape the long-term architectural vision for core full stack and microservices platforms.\nArchitect technical solutions for complex, ambiguous engineering challenges, making sound trade-offs between immediate velocity and long-term system health.\nLead cross-team technical initiatives to extend software standards and platform impact across the engineering organization.\nMentor engineers, influence organizational design standards, and champion best engineering and operational practices.\nProactively manage technical dependencies and align architectural strategy across external engineering teams.\nPartner with product and business stakeholders to resolve ambiguity, clarify requirements, and address technical risks early in the lifecycle.\nLeverage deep domain knowledge to guide technology choices independently in fast-paced, high-scale environments.\nStreamline complex application architecture by focusing on core scalability, efficiency, and critical business outcomes.\nArchitect and build applications that are resilient, secure, and maintainable under high traffic loads.\nDevelop high-performance front-end interfaces and back-end microservices utilizing modern frameworks and design patterns.\nDesign, build, and optimize high-throughput GraphQL APIs to power seamless client applications and backend integrations.\nLead rigorous code reviews, establish testing strategies, and enforce engineering excellence across the software development lifecycle.\nTHE STATS\nWhat we’re looking for in our next teammate\nDegree in Computer Science or a related field, or equivalent practical experience, with 5+ years building and shipping production software.\nDeep expertise in modern web frontend architecture with TypeScript, JavaScript (ES6+), and React - including component design, state management, and hooks.\nMobile development with React Native, plus readiness to work natively: we're migrating our mobile apps to native (Swift/iOS and Kotlin/Android) with the help of AI tooling, so you're either comfortable in native mobile or a strong engineer eager to pick it up fast. Existing Swift or Kotlin experience is a plus.\nStrong command of HTML5, CSS3, responsive design, and cross-browser/cross-device compatibility across web and mobile.\nProven track record of frontend performance optimization: code splitting, lazy loading, bundle/asset optimization, rendering performance, and Core Web Vitals.\nTest-first mindset with hands-on frontend testing experience (e.g., Jest, React Testing Library) and a commitment to code quality, maintainability, and observability.\nWorking knowledge of backend services in Java and Spring Boot - enough to build and extend APIs and collaborate closely with backend teams.\nExperience consuming and integrating APIs on the client, including GraphQL.\nSolid grasp of software design patterns and architectural best practices for reliable, scalable, maintainable systems.\nHands-on use of AI development tools (AI coding assistants, agentic IDEs, LLM-based testing or review tools) in real projects.\nStrong communication and cross-functional collaboration skills.\nProven technical leadership: mentoring engineers, setting technical direction, and raising engineering standards across a team.\nPreferred Skills\nExperience with design systems, reusable component libraries, and accessibility (WCAG) best practices.\nFamiliarity with relational databases, messaging/streaming concepts (e.g., Kafka), and GraphQL federation (e.g., Cosmo).\nExperience with CI/CD pipelines and build tooling (e.g., Gradle, Buildkite).\nCloud infrastructure (preferably AWS), containerization (Docker), and orchestration (Kubernetes); exposure to Helm and Terraform a plus.\n\nABOUT FANDUEL\nFanDuel Group is the premier mobile gaming company in the United States and Canada. FanDuel Group consists of a portfolio of leading brands across mobile wagering including: America’s #1 Sportsbook, FanDuel Sportsbook; its leading iGaming platform, FanDuel Casino; the industry’s unquestioned leader in horse racing and advance-deposit wagering, FanDuel Racing; and its daily fantasy sports product.\nIn addition, FanDuel Group operates FanDuel TV, its broadly distributed linear cable television network and FanDuel TV+, its leading direct-to-consumer OTT platform. FanDuel Group has a presence across all 50 states, Canada, and Puerto Rico.\nThe company is based in New York with US offices in Los Angeles, Atlanta, and Jersey City, as well as global offices in Canada and Scotland. The company’s affiliates have offices worldwide, including in Ireland, Portugal, Romania, and Australia.\nFanDuel Group is a subsidiary of Flutter Entertainment, the world's largest sports betting and gaming operator with a portfolio of globally recognized brands and traded on the New York Stock Exchange (NYSE: FLUT).\nPLAYER BENEFITS\nWe treat our team right\nWe offer amazing benefits above and beyond the basics. We have an array of health plans to choose from (some as low as $0 per paycheck) that include programs for fertility and family planning, mental health support, and fitness benefits. We offer generous paid time off (PTO & sick leave), annual bonus and long-term incentive opportunities (based on performance), 401k with up to a 5% match, commuter benefits, pet insurance, and more - check out all our benefits here: FanDuel Total Rewards. *Benefits differ across location, role, and level.\nFanDuel is an equal opportunities employer and we believe, as one of our principles states, “We are One Team!”. As such, we are committed to equal employment opportunity regardless of race, color, ethnicity, ancestry, religion, creed, sex, national origin, sexual orientation, age, citizenship status, marital status, disability, gender identity, gender expression, veteran status, or any other characteristic protected by state, local or federal law. We believe FanDuel is strongest and best able to compete if all employees feel valued, respected, and included.\nFanDuel is committed to providing reasonable accommodations for qualified individuals with disabilities. If you have a disability and need a workplace accommodation or adjustment during the application and hiring process, including support for the interview or onboarding process, please email .\nThe applicable salary range for this position is $138,000 - $173,000 USD, which is dependent on a variety of factors including relevant experience, location, business needs and market demand. This role may offer the following benefits: medical, vision, and dental insurance; life insurance; disability insurance; a 401(k) matching program; among other employee benefits. This role may also be eligible for short-term or long-term incentive compensation, including, but not limited to, cash bonuses and stock program participation. This role includes paid personal time off and 14 paid company holidays. FanDuel offers paid sick time in accordance with all applicable state and federal laws.\nIt is unlawful in Massachusetts to require or administer a lie detector test as a condition of employment or continued employment. 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