Senior Full Stack Developer (Back-end heavy, Ruby on Rails)

KodeKloud’s a fast-growing EdTech SaaS company dedicated to transforming the way businesses upskill their teams in DevOps, Cloud Computing, and IT. Our platform offers a hands-on, practical learning experience trusted by over 1 million users worldwide.

We at Kodekloud are committed to building a globally diverse team and are thrilled to extend employment opportunities to individuals in any part of the world. We require candidates to possess eligible working rights and have a compatible timezone overlap with their team to facilitate seamless collaboration.

As a remote-first company, our interviews and onboarding are entirely virtual, providing a smooth and efficient experience for our candidates.

The Impact You’ll Make

Our engineering velocity is compounding. We need a senior engineer who can design and ship end‑to‑end product features across the stack— Ruby on Rails / NestJS on the backend and Next.js on the frontend—while mentoring teammates and upholding elite code quality

What you’ll do

• Design & build scalable web applications using Next.js (SSR/SSG, routing, performance), NestJS, and Ruby on Rails (conventional MVC, ActiveRecord, caching).
• Own features end‑to‑end: database schema, domain modelling (incl. Sequent for CQRS/ES), API design with Grape and REST/GraphQL, UI/UX, CI/CD, and production rollout.
• Integrate with third‑party services (Stripe, Firebase, Razorpay, etc.) and internal micro‑services.
• Write clean, maintainable, well‑tested code in TypeScriptandRuby, leveraging unit, integration, and e2e tests.
• Profile & optimize performance across client and server, ensuring sub‑second page loads.
• Automate delivery via GitLab pipelines, containerization, and infrastructure‑as‑code (Terraform / Pulumi).
• Mentor engineers through code reviews, pair programming, and architecture discussions.
• Collaborate remotely with Product, Design, and Growth teams to convert vision into shippable increments.

Must‑Have Technical Skills

• Ruby & Ruby on Rails (advanced) — idiomatic Ruby, MVC, ActiveRecord, caching, background jobs.
• NestJS (advanced) — modular architecture, decorators, guards, interceptors, dependency injection.
• Grape — lightweight RESTful API micro‑framework for Ruby services.
• TypeScript & modern JavaScript (ES2022+) mastery.
• Relational databases (PostgreSQL preferred) and ORMs (ActiveRecord, Prisma, TypeORM).
• API design & integration — REST and/or GraphQL.
• Testing — RSpec, Jest, React Testing Library, Supertest, Cypress or Playwright.
• Version control & CI/CD — Git, GitLab/GitHub Actions, semantic release, automated pipelines.
• Debugging & observability — Rails console, Chrome DevTools, Node inspector, logging, metrics, tracing.

Nice‑to‑Have / Bonus Points

• Sequent (CQRS / Event‑Sourcing) — command and query separation, aggregates, projections.
• Next.js (advanced) — SSR, SSG, dynamic routing, Image & App Router, performance tuning.
• Cloud: GCP strongly preferred (Cloud Run, GKE, Firestore, Pub/Sub); AWS or Azure acceptable.
• Container orchestration: Docker, Kubernetes, Helm.
• Serverless & edge runtimes: Vercel, Cloudflare Workers.
• Frontend extras: React Native, Expo, Tailwind CSS, Storybook.
• Backend extras: Micro‑services, event‑driven architecture, GraphQL Federation.
• Domain familiarity: EdTech, SaaS, subscription billing.
• Analytics & experimentation: Mixpanel, Amplitude, A/B testing frameworks.

Soft Skills & Mindset

• Founder‑style ownership: you see problems, you fix them.
• Excellent written & spoken English; can communicate async, annotate PRs, and draft RFCs.
• Comfortable collaborating across product, design, and backend teams in a 100 % remote setup.
• Bias for action, data‑driven decision making, and continuous improvement.

Minimum Qualifications

• 5+ years of professional experience building applications, including at least large‑scale B2C apps in production.
• Demonstrated success shipping to millions of users globally.
• Proven expertise in the Must‑Have skills listed above.
• Track record of writing clean, testable, and maintainable code and running code reviews.
• Comfortable working autonomously in a fully remote environment.

Personality Traits We Value

• Self‑starter who thrives in ambiguous situations.
• Detail‑oriented and quality‑obsessed.
• Lifelong learner who keeps up with new tech.
• Team player who enjoys mentoring others and receiving feedback.

Why KodeKloud

• Ship impact: millions of learners rely on our platform daily.
• Culture of autonomy, craftsmanship, and rapid iteration—no corporate red tape.
• Global peers, flexible hours (within IST‑overlap), annual learning budget, and competitive comp pegged to your region.

Equal Opportunity

KodeKloud is an Equal Employment Opportunity employer. We celebrate diversity and are committed to creating an inclusive environment for all employees.