Sachin Kumar Singh.

Backend Engineer

Noida, Uttar Pradesh, India1 yr 9 mos experience

AI EnabledAI ML Practitioner

Key Highlights

Engineered scalable backend services for multiple applications.
Achieved 99.9% uptime through effective infrastructure management.
Improved team productivity by implementing structured code reviews.

Stackforce AI infers this person is a Backend Developer specializing in scalable web applications and cloud infrastructure.

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Skills

Core Skills

Node.jsAwsMongodbRest ApisReactTypescript

Other Skills

Amazon Web Services (AWS)RedisPostgreSQLExpress.jsHTMLTailwind CSSJestRedux.jsReact.jsWeb Services APIraylibGame DevelopmentscssGitHubImage Processing

About

Backend Developer with 2 years of experience building scalable Node.js applications, RESTful APIs, and microservices . Skilled in database optimization, query performance tuning, and DevOps automation with CI/CD pipelines. Committed to creating robust, production-grade backend systems that ensure high availability and performance

Experience

1 yr 9 mos

Total Experience

10 mos

Average Tenure

Current Experience

Iqsetters

Node.js Developer

Jan 2025 – Sep 2025 · 8 mos · Noida, Uttar Pradesh, India · On-site

Engineered and deployed scalable backend services for 5+ production-ready applications from concept to
deployment..
Architected and configured a secure authentication system with granular Role-Based Access Control (RBAC),
strengthening access control and preventing unauthorized access.
Managed AWS & Azure infrastructure (EC2, CloudFront, S3) and CI/CD pipelines with GitHub Actions, achieving
99.9% uptime and automating deployments.
Improved team productivity by implementing Git workflows and structured code reviews, cutting integration
issues by 40%.
Integrated 10+ third-party APIs (payments, notifications, real-time communication), increasing product feature
adoption.
Developed event-driven systems using Node.js, TypeScript, and MongoDB, and introduced Redis caching to
reduce API response times close to 40%.
Successfully rehabilitated and delivered 4 critical, behind-schedule projects, ensuring on-time delivery and
restoring project confidence.

Node.jsAmazon Web Services (AWS)AWS

Spysr

Back End Developer

Oct 2023 – Nov 2024 · 1 yr 1 mo · Noida, Uttar Pradesh, India · On-site

Developed RESTful APIs using Node.js and Express.js, and maintained existing client projects ensuring 99%+
uptime and timely bug resolution.
Wrote unit and integration tests achieving 70%+ code coverage, collaborating with a team of 4 developers in
Agile sprints for project delivery.
Optimized database performance by analyzing slow queries and implementing indexing strategies and caching
with Redis reducing query execution time by 35-50%
Integrated SMS country API, handling 10,000+ daily notifications and updated technical documentation for API
endpoints and system workflows
Participated in code reviews and daily standups as part of Agile development practices, contributing to 15+
successful sprint deliveries

Node.jsPostgreSQLREST APIs

Verzeo

Frontend Developer

Nov 2022 – Apr 2023 · 5 mos · Noida, Uttar Pradesh, India · Remote

Developed and maintained responsive React components using TypeScript and Tailwind CSS, contributing to a
20% improvement in website performance metrics.
Implemented client-side form validation and API integration for user authentication system, handling 1000+ daily user submissions.
Optimized application loading time by implementing lazy loading and code splitting, improving initial page load
time by 40%.
Collaborated with a team of 5 developers to refactor legacy code into modern React hooks and functional
components, reducing bundle size by 15%.

ReactHTMLTypeScript