Senior Full Stack Developer

POSITION OVERVIEWWe are seeking a talented Fullstack Developer You will work on a business-critical, customer-facing.This is an exciting opportunity to:Operate and evolve a sophisticated TypeScript monorepo across front-end, backend, and edge infrastructureTake ownership of feature delivery, incident response, and platform stabilityWork within a senior, high-performing team in a distributed, remote-first environmentDrive operational excellence and continuous improvement KEY RESPONSIBILITIESOperational Excellence Monitor production systems and respond to alerts in real-time, triaging issues by severityParticipate in on-call rotation (defined schedule) with accountability for incident responsePerform root-cause analysis and post-incident reviews for major incidentsExecute routine operational tasks: backups, catalogue/translation sync, scheduled job managementMaintain and continuously improve runbooks, operational dashboards, and monitoringWork with observability tools (Grafana, Sentry) to identify and track platform healthFeature Development & Roadmap Delivery Design and develop roadmap features in the backlog (experimentation enhancements, SSP improvements, accessibility, market onboarding, etc.)Own end-to-end delivery: requirements clarification → design → implementation → testing → deploymentExecute within Scrum ceremonies (sprint planning, standups, reviews, retrospectives)Write clean, well-tested TypeScript code following engineering standardsCollaborate with business and market teams via the Self-Service PortalDrive feature delivery to production via GitHub Actions CI/CD pipelinesMaintenance & Platform StabilityExecute dependency and security updates (Nx, TypeScript, Node.js, npm packages) on a regular cadenceAddress security vulnerabilities and patches within defined SLA windowsFix bugs and technical debt, following the fix-forward (no rollback) operating modelMaintain Infrastructure-as-Code (Terraform) across GCP and Cloudflare with no driftEnsure platform compliance with security, privacy, and accessibility standards (WCAG)Quality & TestingWrite and maintain unit tests (Vitest) and end-to-end tests (Playwright) for all feature workEnsure test suite passes and maintains ≥80% coverageParticipate in accessibility testing and WCAG conformance validationEnforce CodeQL and dependency-audit gates in the PR processCollaborate on code reviews with high quality standardsValidate orchestrations and critical data flows REQUIRED QUALIFICATIONSExperience5+ years of professional software engineering experience (or 3+ years for mid-level candidates)Proven experience operating production, cloud-native, customer-facing services in a high-throughput environmentExperience with incident response and on-call operations in production systemsTrack record of delivering features in an agile, fast-paced environmentTechnical SkillsCore FrontendStrong proficiency in TypeScript and modern JavaScript (ES2020+)Deep experience with React 18 or Preact (component design, hooks, state management)Redux Toolkit for state managementExperience building and optimizing user-facing features with performance in mindFamiliarity with browser APIs, DOM manipulation, and front-end performance profilingCore BackendStrong Node.js experience (production-scale applications)TypeScript for backend servicesRESTful and/or gRPC API design and implementationDatabase experience with Firestore and/or similar NoSQL systemsGoogle Cloud Platform (GCP) production services: Cloud Run, Cloud Functions, Pub/SubExperience with Cloud Run Jobs and scheduled/async processingInfrastructure & DevOpsTerraform and Infrastructure-as-Code principles (managing GCP resources)Cloudflare Workers (edge computing, serverless functions)GitHub and GitHub Actions (CI/CD pipelines, branch protection, automated testing)Docker containerization and deployment conceptsComfortable working with cloud networking, load balancing, and security groupsTooling & PracticesNx monorepo management (workspace tooling, build optimization)Vitest for unit testingPlaywright for end-to-end testinggRPC (optional but valuable)Observability tools: OpenTelemetry, Sentry, application loggingGit workflow (conventional commits, PR reviews, protected branches)