{"id":1140626,"url":"https://alion.io/job/stonex-group-senior-full-stack-engineer-java-react","title":"Senior Full Stack Engineer (Java & React)","company":{"id":2646,"name":"StoneX Group","domain":"stonex.com","url":"https://alion.io/company/stonex","size_band":"1001-5000","is_staffing_agency":false,"is_intermediary":false,"ats_vendor":"iCIMS","truth_index":null},"role":"Backend","role_family":"Backend","seniority":"senior","employment_type":null,"work_mode":"hybrid","remote_scope":null,"hiring_geo_confidence":"structured","locations":[],"countries":[],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":null,"experience_years_min":null,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"Apache Kafka","optional":false},{"name":"Azure","optional":false},{"name":"Azure DevOps","optional":false},{"name":"CI/CD","optional":false},{"name":"Claude","optional":false},{"name":"Copilot","optional":false},{"name":"Fastify","optional":false},{"name":"GitHub","optional":false},{"name":"gRPC","optional":false},{"name":"JavaScript","optional":false},{"name":"MS SQL","optional":false},{"name":"Node JS","optional":false},{"name":"PostgreSQL","optional":false},{"name":"React.js","optional":false},{"name":"Redpanda","optional":false},{"name":"Rest API","optional":false},{"name":"Spring Boot","optional":false},{"name":"TypeScript","optional":false},{"name":"Vite","optional":false},{"name":"Java","optional":true}],"status":"live","first_seen_at":"2026-09-23T11:00:52Z","employer_posted_date":"2026-09-23","last_verified_at":"2026-09-23T11:00:52Z","board_verified":true,"closed_at":null,"days_open":0,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":0},"description":"Overview\nPermanent, full-time, B2B\nConnecting clients to markets - and talent to opportunity.\nWith 5,400+ employees and over 80,000 institutional, commercial, and payments clients, we operate from more than 80 offices spread across six continents. As a Fortune 100, Nasdaq-listed provider, we connect clients to the global markets - focusing on innovation, human connection, and providing world-class products and services to all types of investors. Whether you want to forge a career connecting our retail clients to potential trading opportunities, or ingrain yourself in the world of institutional investing, StoneX Group is made up of four business segments that offer endless potential for progression and growth\nBusiness Segment Overview: Come join the Nexus project, an ambitious initiative to consolidate all StoneX customer-facing systems into a single application. You’ll be working on a squad within a 150+ global team. Our squad is responsible for delivering multiple features of the user interface for use by tens of thousands of customers.\nTechnology Ecosystem:\nBack End: Java 21+, Spring Boot, REST APIs, Kafka/Redpanda, gRPC, PostgreSQL, MSSQL, Unit/Integration Testing\nFront End: React.js, Node.js\nArchitecture: Micro-services, event-based architecture \nCloud: CI/CD DevOps, Azure, GitHub Enterprise\nResponsibilities\nPosition Purpose: We are seeking a Senior Full Stack Engineer to serve as a top-tier technical authority across our engineering organization, shaping multi-year technical strategy for our React, Node.js, and Java Spring Boot platforms. You will define architecture standards spanning multiple product lines, resolve the organization's most complex technical challenges, and grow senior engineering talent. This is a highly influential, largely hands-off-keyboard role focused on technical vision, cross-organizational alignment, and engineering excellence within our cloud-based microfrontend and microservice ecosystem on Azure.Primary duties will include:\nDefine and evolve multi-year technical strategy and architecture standards across React/Vite, Node.js/Fastify, and Java Spring Boot platforms.\nAct as the final technical escalation point for the organization's most complex cross-system design and performance challenges.\nEstablish and govern engineering-wide standards for architecture, security, scalability, and reliability across all product teams.\nMentor and grow Staff and Senior Engineers, and help shape the technical career ladder and promotion criteria.\nPartner directly with senior engineering leadership, principal architects, and product executives to align technical roadmaps with business strategy.\nLead evaluation and adoption of emerging technologies, driving organization-wide proofs of concept and build-vs-buy decisions.\nDrive resolution of systemic reliability, scalability, and security risks at the platform level, beyond any single team's scope.\nChampion engineering culture, technical documentation standards, and cross-team knowledge sharing at scale.\nRepresent engineering in high-stakes technical decisions with external vendors, regulators, or enterprise architecture boards where relevant.\nQualifications\nTo land this role you will need:\nMastery of JavaScript/TypeScript (ES6+), HTML5, CSS3, and large-scale frontend architecture, including micro frontends.\nDeep, proven expertise in React.js, Node.js, and frameworks like Fastify or Express at enterprise scale.\nMastery of Java Spring Boot for architecting large-scale, high-availability REST APIs and microservices.\nDemonstrated track record of setting technical direction across multiple engineering organizations or business units.\nDeep expertise in Azure App Services, Azure Functions, Azure DevOps, and enterprise-grade cloud architecture.\nExpert-level understanding of distributed systems, RESTful API design, and enterprise integration patterns.\nHistory of mentoring Staff-level engineers and influencing organization-wide engineering career frameworks.\nAdvanced expertise in database systems (e.g., PostgreSQL, MS SQL Server), including large-scale data architecture decisions.\nExceptional communication and influencing skills, with experience advising VP- and C-level stakeholders on technical strategy.\nExperience using GitHub Copilot with modern models (e.g., Claude Opus or Sonnet), and shaping organization-wide AI-assisted engineering practices.\nWhat makes you stand out:\nGreat knowledge/experience in DevOps and CI/CD\n\nEducation / Certification Requirements:\nUniversity qualification in Computer Science, Software Engineering or similar discipline or great GitHub portfolio showcasing your most recent projects.\n\nWorking environment:\nHybrid 4-days in office (we have private parking for employees)\nB2B contract for 12 months\n#LI-DK1","description_format":"text","description_chars":4769,"description_truncated":false,"requirements":{"experience_years_min":null,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":{"level":"master","optional":false},"security_clearance":false,"languages":[]},"benefits":[],"hiring_locations":[],"hiring_excludes":[],"relocation_offered":false,"industries":["Financial Services","Professional Services","Banking"],"lifecycle":[{"event":"open","at":"2026-09-23T11:00:52Z"}],"liveness":{"score":86,"band":"hot","label":"Hiring now","p_open":1,"p_active":0.86,"p_room":1,"age_days":0,"expected_fill_days":9,"reasons":["conf:2","win:early"],"computed_at":"2026-09-23T13:52:35Z"},"pay":null,"html_url":"https://alion.io/job/stonex-group-senior-full-stack-engineer-java-react","json_url":"https://alion.io/job/stonex-group-senior-full-stack-engineer-java-react.json","meta":{"generated_at":"2026-09-23T13:52:35Z","cache_seconds":300,"methodology":"https://alion.io/methodology","terms":"https://alion.io/terms","contact":"https://alion.io/contact","api":"https://alion.io/developers"}}