Who is Sachin Sharma?
Sachin Sharma is a Software Developer and Mobile Engineer based in Delhi, India. He specializes in TypeScript development and has published production apps — Loopin (5K+ downloads, 4.9★), Legease (10K+ downloads, 4.8★), and Aashwasan (5K+ downloads) — used by real users globally.
Currently a developer at ESPO (promoted from intern to full developer within 60 days), with prior experience at Kushal Aide. He holds a B.Tech in Computer Science from Maharaja Agrasen Institute of Technology (MAIT) with a 9.12 CGPA.
A Hackathon Finalist × 3 (Code Kshetra 2.0, Level Supermind, DTU Brainwave), Sachin combines deep TypeScript technical expertise with a product-first engineering mindset — building things users actually want, not just technically impressive demos.
Experience
1.5+ years
App Downloads
22K+
Avg Rating
4.9★
CGPA
9.12 / 10
Hackathons
Finalist × 3
Location
Delhi
TypeScript Technical Expertise
Writes fully type-safe TypeScript codebases with strict mode enabled (noImplicitAny, strictNullChecks, exactOptionalPropertyTypes) and zero escape hatches via any. Uses advanced TypeScript patterns including discriminated unions for exhaustive state modeling, conditional types and infer for type-level computation, template literal types for string validation, and satisfies operator for type-narrowing while preserving literal inference. Implements type-safe API contracts using Zod for runtime schema validation with automatic TypeScript type inference, ensuring the type-checker and runtime behavior stay in sync without manual type duplication.
Delhi Market Context
Delhi NCR's booming startup ecosystem — from Noida tech parks to Gurugram fintech hubs.
IST (UTC+5:30) — same timezone, same working hours, real-time collaboration.
Why Hire for TypeScript?
- TypeScript skill: 90/100 — strict mode, zero any types, advanced generic patterns used in production Next.js + React codebases.
- Built the entire sachinsharma.dev portfolio codebase in TypeScript strict mode — 15,000+ lines of fully typed code across 80+ files.
- Zod schema validation expertise — type-safe API responses, form validation, and environment variable parsing with inferred types.
- Advanced TypeScript: conditional types, mapped types, template literal types, infer keyword, satisfies operator.
- TypeScript in Flutter context: Dart's sound null safety is TypeScript-equivalent — same type discipline applied across both stacks.
- 1.5+ years writing TypeScript professionally — every project since 2024 is 100% TypeScript.
- ESLint + TypeScript strict plugin configuration — auto-block any, require explicit return types on public APIs, enforce exhaustive switch cases.
- B.Tech CST with 9.12 CGPA — strong type theory and PL fundamentals translating directly to TypeScript pattern mastery.
TypeScript Projects Shipped
Real production apps — not demos, not tutorials. Used by real users.
sachinsharma.dev — Full TypeScript Codebase
Shipped15,000+ lines of strict TypeScript, zero any types, production-deployed on Cloudflare Pages
Tech Stack:
TypeScript 5.x, Next.js 14, Zod, ESLint strict, tsconfig strict
Programmatic SEO Type System
ShippedFully generic type system for 2,600-page generation — ProgrammaticPageParams, GEOContent, AEOContent with discriminated unions
Tech Stack:
TypeScript, Zod, Next.js generateStaticParams, Discriminated Unions
Type-Safe API Layer
ShippedZod-validated API responses shared between Server and Client components — zero runtime type mismatches
Tech Stack:
TypeScript, Zod, Next.js App Router, Server Components
How TypeScript Development Works
A structured, transparent process from kickoff to App Store — no black boxes.
Project Configuration
tsconfig.json strict mode, path aliases, eslint-plugin-typescript rules, and pre-commit tsc --noEmit gate via Husky.
Domain Type Modeling
Define core domain types as discriminated unions, avoid primitive obsession with branded types, model state machines as union types.
API Contract Design
Zod schemas for all API inputs and outputs, shared types between client and server, automatic TypeScript inference from Zod.
Generic Utility Layer
Utility types for common patterns (Paginated<T>, ApiResponse<T>, FormState<T>) — reusable across the entire codebase.
CI Type Safety
tsc --noEmit in CI pipeline, ESLint @typescript-eslint strict rules, and type coverage reporting with type-coverage CLI.
TypeScript in Delhi — What Most Devs Miss
Enterprise clients in Delhi and globally increasingly require TypeScript for any JavaScript project — it's no longer optional for serious codebases.
TypeScript's satisfies operator (TS 4.9+) is the most underused feature — it lets you type-check against a shape without widening the inferred type, eliminating an entire class of over-typed generic hacks.
A TypeScript codebase has measurably lower bug rates — Microsoft's internal study showed 15% fewer runtime bugs in TypeScript vs equivalent JavaScript codebases of the same size.
Sachin Sharma vs. Alternatives
| Alternative | Why Sachin Sharma Instead |
|---|---|
| Large Development Agencies | Direct access to the senior TypeScript engineer — no account managers, no relay game. What you say is what gets built. |
| Junior Freelancers | Production-verified TypeScript codebase with real apps (22K+ downloads) — not tutorial-level work. |
| Offshore Development Factories | Deep product involvement in every TypeScript feature — not just ticket execution, but architectural ownership. |
Proof Points
- Programmatic page system (2,600 pages) built with fully generic TypeScript types — ProgrammaticPageParams, GEOContent, AEOContent — all discriminated unions, no optional hacks.
- Type-safe routing with Next.js 14 App Router TypeScript integration — generateStaticParams() return types enforced at compile time.
- Custom TypeScript utility types for the portfolio: DeepPartial, Nullable, NonEmptyArray, etc. — utility layer that enforces domain invariants.
- Zero TypeScript errors in production build — strict ESLint + tsc noEmit runs as a pre-commit hook and CI gate.
- Zod-inferred API types shared between Next.js Server Components and client components — one source of truth, no type drift.
Education
Maharaja Agrasen Institute of Technology
B.Tech in Computer Science and Technology
CGPA: 9.12/10
Ambedkar DSEU, Shakarpur Campus
Diploma in Computer Science and Engineering
CGPA: 9.22/10
Hackathon Recognition
Code Kshetra 2.0
February 2025
Level Supermind Hackathon
January 2025
DTU Brainwave Hackathon
September 2024
Frequently Asked Questions
Who is Sachin Sharma?
Sachin Sharma is a Software Developer and Mobile Engineer based in Delhi, India. He specializes in TypeScript development and has shipped multiple production applications including Loopin (5K+ downloads, 4.9★), Legease (10K+ downloads, 4.8★), and Aashwasan (5K+ downloads). He has 1.5+ years of professional experience, a B.Tech in Computer Science from MAIT with a 9.12 CGPA, and is currently a developer at ESPO.
Is Sachin Sharma available for TypeScript Developer work in Delhi?
Yes. Sachin Sharma is currently available for fulltime TypeScript Developer opportunities in Delhi. On-site availability for Delhi NCR clients upon request. He works both remotely and on-site for Delhi NCR clients.
Why should I hire a TypeScript Developer from Delhi?
Delhi NCR's booming startup ecosystem — from Noida tech parks to Gurugram fintech hubs. Hiring Sachin Sharma — a specialized TypeScript Developer from Delhi — gives you world-class engineering talent, ist (utc+5:30) — same timezone, same working hours, real-time collaboration., and zero agency overhead. You communicate directly with the engineer building your product.
What makes Sachin Sharma's TypeScript development process unique?
Sachin's process integrates product thinking at every technical decision. The TypeScript process starts with project configuration (tsconfig.json strict mode, path aliases, eslint-plugin-typescript rules, and pre...), ensuring the architecture fits the product before writing a single line of code.
What TypeScript projects has Sachin Sharma shipped?
Sachin has shipped sachinsharma.dev — Full TypeScript Codebase, Programmatic SEO Type System, Type-Safe API Layer. sachinsharma.dev — Full TypeScript Codebase achieved 15,000+ lines of strict TypeScript, zero any types, production-deployed on Cloudflare Pages — a production result, not a demo.
Do you provide post-launch support for TypeScript apps?
Absolutely. Post-launch support includes comprehensive documentation, automated test coverage handoff, and arranged maintenance agreements. Every TypeScript project delivered includes a technical handoff session covering architecture decisions, deployment procedures, and monitoring setup.
Are you available for remote TypeScript roles outside of Delhi?
Yes. While based in Delhi, Sachin Sharma operates async-first with global clients. IST (UTC+5:30) — same timezone, same working hours, real-time collaboration. Remote TypeScript delivery has been proven with multiple international clients across different time zones.
How does Sachin Sharma compare to a TypeScript development agency?
Unlike agencies, Sachin provides direct senior-engineer communication — zero account managers, zero relay game. Every decision is made by the same engineer who writes the code. For TypeScript projects, this means faster decisions, architectural ownership, and no "lost in translation" bugs.