Senior Fullstack (Node.js + React.js)

Location: RemoteEmployment: Full-time, B2B contractLanguage: EnglishAbout the CompanyThe hiring company is an independent product-based SaaS organization with a portfolio of 10+ in-house B2C digital products. The company builds and scales its own products - no outsourcing, no external clients, and no investor pressure.About the RoleThe company is seeking a Senior SDE Fullstack who will take full hands‑on ownership of backend and frontend feature development, contribute to architecture decisions, ensure performance, and maintain code quality across a modern SaaS environment.This is a senior individual contributor role, fully hands‑on - without people‑management responsibilities.What You’ll DoHands‑On Engineering (Backend & Frontend)Build and deliver complex features end‑to‑end using Node.js, NestJS, React.js, Next.js, TypeScript.Design and implement scalable backend services and secure REST APIs.Develop performant frontend components, SSR flows, routing, and state management.Write clean, maintainable, well‑tested code.Participate in architectural discussions within the product team.Performance, Reliability & ObservabilityImplement and refine logging, monitoring, and alerting (Sentry, Datadog, Groundcover).Troubleshoot and optimize backend and frontend performance.Participate in incident resolution and root‑cause analysis.Improve system reliability, traceability, and error visibility.CI/CD, Git & DevOps CollaborationMaintain and enhance CI/CD pipelines (including GitHub Actions).Work with DevOps to ensure consistent and stable environments across dev/staging/production.Manage and contribute to Git branching strategies (Git Flow or Trunk‑Based Development).Ensure smooth, efficient, predictable deployment workflows.Tech Stack RequirementsMust‑Have5+ years of professional full‑stack engineering experienceStrong production experience with:Node.js, NestJSReact.js, Next.jsTypeScriptSolid PostgreSQL knowledge (data modeling, optimization, indexing)Strong experience with AWS services (Lambda, S3, CloudWatch, SNS/SQS or equivalents)Experience building secure REST APIs (JWT auth, security best practices)Understanding scalable architectures and distributed systems basicsHands‑on experience with CI/CD pipelines and GitHub ActionsDocker experienceExperience managing Git branching strategies (Git Flow / Trunk‑Based Development)Nice‑to‑Have (Strong Plus)Kubernetes (K8s)ArgoCD or GitOps workflowsEvent‑driven systems (Kafka, RabbitMQ, AWS SNS/SQS)Infrastructure as Code (Terraform)Observability tooling (Sentry, Datadog, Groundcover)Experience with design systems / StorybookExperience with internal utilities or shared packagesExperience with test automation frameworks (Playwright or similar)Key Performance Indicators (KPIs)Reliable end‑to‑end feature deliveryArchitecture clarity and maintainabilityProduction stability & incident resolution speedCI/CD stability and deployment qualityCode quality, documentation, and testing disciplineWhat the Company OffersCompetitive compensation22 paid vacation days + national holidaysAnnual learning & development budget (courses, certifications, conferences)Opportunity to contribute to a fast‑growing multi‑product SaaS environmentModern technology stack with minimal legacySenior, autonomous engineering culture focused on product impactInterview ProcessExternal recruiter call (30 min) – introduction, expectationsRecruiter Interview (prescreen, scorecard, expectations)Technical InterviewSDE Challenge1‑day test assignmentMust be submitted within 5 daysSecond Technical InterviewHR Interview (Professional skills, ways of working, cultural philosophy)#J-18808-Ljbffr