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Kapil S.
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Kapil S.

Senior Technical Consultant | Web Platforms & Architecture

I help businesses design, build, modernize, and scale web platforms, backend systems, APIs, and enterprise applications. With 9+ years of experience in software engineering and technical consulting, I have worked on large-scale booking platforms, e-commerce systems, payment integrations, content management platforms, and enterprise integration solutions. My experience spans the full software lifecycle—from requirements gathering and technical planning to architecture, development, deployment, and production support. Today, I work closely with Product Owners, Architects, and Engineering teams to translate business requirements into scalable, maintainable, and high-performing software solutions. I bring a combination of hands-on engineering expertise and strategic technical consulting, helping clients make sound technology decisions while ensuring successful delivery. Services I Provide: ✔ Backend Architecture & System Design ✔ API Design & Microservices Development ✔ Enterprise Web Platforms & Business Applications ✔ Legacy System Modernization ✔ Performance Optimization & Scalability Improvements ✔ Technical Consulting & Architecture Reviews ✔ End-to-End Product Development Technical Expertise: • Backend Engineering – Java, Spring Boot, REST APIs, GraphQL • Frontend Engineering – React, Next.js, TypeScript • Platform Architecture – Microservices, Distributed Systems • Data & Messaging – SQL, NoSQL, Redis, Kafka • Enterprise Integrations & Business Systems • System Design & Technical Consulting What You Can Expect: • Clear and proactive communication • Well-structured, maintainable code • Architecture decisions focused on long-term scalability • Strong ownership from planning through delivery • A pragmatic approach that balances business goals with technical excellence Whether you're building a new platform, extending an existing product, modernizing legacy systems, or looking for an experienced technical consultant to guide critical engineering decisions, I can help. Let's discuss your project and identify the best path forward.

🇮🇳New Delhi, India$84/hr100% JSS5.00 (1)Since May 2019

Earnings and projects

MRR
$5.5k

Last 6 months ÷ 6

World#4,544 / 412k
🇮🇳Country#516 / 45.9k
Revenue, last 30 days
$5.3k

Last 6 months: $33k

Total earnings
$127k

Billed in all: $133k

World#29,333 / 412k
🇮🇳Country#4,770 / 45.9k
Per project
$64k

$33k in the last 6 months

World#565 / 412k
🇮🇳Country#52 / 45.9k
Projects, last 6 months
1
0% fixed100% hourly
World#128,092 / 412k
🇮🇳Country#14,379 / 45.9k
Projects in all
2

Across 3 contracts

0% fixed100% hourly
World#328,886 / 412k
🇮🇳Country#39,422 / 45.9k

Earnings, last 30 days

$133k+$5.3k earned in the last 30 daysBilled in all, before Upwork's fee · drag across the chart to see what was earned in any stretch
$125k$130k$135kOct 8Oct 23Nov 7

Skill rankings: Top 2% in NestJS

Ranked by MRR among everyone on Upwork with the skill.

  1. #9Enterprise Software Development180 freelancers · 🇮🇳 #2Top 5%
  2. #30NoSQL Database686 freelancers · 🇮🇳 #2Top 4%
  3. #36Redis1,774 freelancers · 🇮🇳 #3Top 2%
  4. #36Elasticsearch946 freelancers · 🇮🇳 #2Top 4%
  5. #49Software Architecture964 freelancers · 🇮🇳 #2Top 5%
  6. #50Apache Kafka981 freelancers · 🇮🇳 #4Top 5%
  7. #61Spring Boot2,150 freelancers · 🇮🇳 #9Top 3%
  8. #67NestJS3,757 freelancers · 🇮🇳 #10Top 2%