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Navraj Singh

Backend Engineer

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I build the parts nobody sees but everyone depends on: APIs, auth, data and the infra underneath.

GET /api/v1/engineers/navraj200 try it
{
"role": "Backend Engineer","focus": ["APIs", "Auth", "Data", "Infra"],"stack": ["Node.js", "TypeScript", "MongoDB", "Redis", "Docker"],"open_to_work": true}
Email me Resume

About

01
  • Backend engineer who shipped and operated production services for a live gaming platform, from API design to the servers they run on.
  • I care about the unglamorous parts that make systems trustworthy: idempotency, sane indexes, least-privilege auth, reproducible deploys and searchable logs.

Experience

02

Backend Engineer

Backgammon Galaxy · gammon.gg

Aug 2025 — Sep 2026
Remote · Contract

Owned the backend of an online backgammon platform: tournaments, auth, delivery and infrastructure.

APIs & Data
  • Tournament engine in Node.js + TypeScript: bracket progression and state transitions for multi-stage events.
  • MongoDB schemas and indexes designed for brackets and users under concurrent load.
Auth & Security
  • Moved all services to a central Keycloak IdP with OAuth2/OIDC verification and RBAC.
  • Hardened the edge with Nginx: TLS termination and per-route rate limiting.
Delivery & Ops
  • Zero-downtime, single-commit releases via Bitbucket Pipelines, Docker and Harbor.
  • Centralized logs with Fluent Bit → OpenObserve instead of SSH-ing into boxes.
Client
  • Built the React Native app for iOS and Android.
Request path
  1. Client
    web · mobile
  2. Edge / CDN
    DNS · TLS
  3. Reverse proxy
    rate limits
  4. API
    Node · TS
  5. Database
    indexed
API also talks toIdentity provider · OIDC · RBACCentral logging · searchable
Deploy path
  1. git push
    one commit
  2. CI pipeline
    test · build
  3. Image registry
    versioned
  4. Deploy
    zero-downtime
The shape of the production backends I build and run
Node.jsTypeScriptExpressMongoDBKeycloakDockerNginxBitbucket PipelinesOpenObserveReact Native

Projects

03

Subscription Management API

Backend service · 2024

Source

Problem Handle renewals and expirations without a polling loop hammering the DB.

  • Redis-backed workers for renewals; MongoDB TTL indexes expire records natively.
  • Distributed sliding-window rate limiter on Redis sorted sets.
Node.jsExpressMongoDBRedisJWT

Imagify

Full-stack SaaS · 2025

Source

Problem Payment webhooks retry, so credits must never be granted twice.

  • Razorpay webhooks with signature checks, idempotent handling and atomic writes.
  • Credit-based tiers behind JWT middleware and schema-validated endpoints.
Node.jsExpressMongoDBReactRazorpay

GitHub Activity

04
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109 contributions in the last yearLessMore

Stack

05
Backend
Node.jsExpressRESTOpenAPISchema validation
Data
MongoDBPostgreSQLRedisMySQL
Infra
DockerNginxBitbucket PipelinesHarborCloudflareLinux
Security & Ops
KeycloakOAuth2 / OIDCJWTRBACTLSFluent BitOpenObserve
Languages
TypeScriptJavaScriptSQL
Frontend
ReactReact NativeTailwindZustand

Beyond Work

06

Vice President, Coders Club

2024 — 2025

Ran hackathons and coding contests, mentored juniors, and taught API security (OWASP Top 10) workshops.

B.Tech, Computer Science

2022 — 2026

Baba Farid College of Engineering & Technology

07 · Contact

Need someone to own the backend? Let's talk.

Open to backend and backend-leaning full-stack roles, remote or on-site.

Email me