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Pawan Kumar

@pkpawankumar66j

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Backend engineer building scalable APIs, payments, and distributed systems.

India

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What I'm looking for

I seek backend or platform roles building scalable, secure systems and payments, in collaborative Agile teams with opportunities to design high-throughput architecture and grow technical leadership.

I am a backend engineer focused on building scalable backend services, reliable APIs, and payments infrastructure for high-growth products. I specialize in Node.js and TypeScript and have strong experience in system design, database optimization, and cloud services.

At Flynaut LLC I designed and optimized REST/GraphQL APIs and microservices, reduced response latency by 40%, migrated a monolith to microservices on AWS ECS, and integrated Stripe to securely handle subscriptions and connected accounts. I have delivered systems that scale to 200k+ daily requests and implemented event-driven patterns, push notifications with FCM, and automated background jobs.

I bring hands-on experience across databases (MongoDB, MySQL, PostgreSQL, Redis), message queues (Kafka, RabbitMQ), and DevOps tools like Docker, Kubernetes, and CI/CD pipelines. I work well in Agile teams, prioritize reliability and performance, and enjoy solving complex backend and payment infrastructure challenges.

Experience

Work history, roles, and key accomplishments

Current

Backend Developer

Current

Flynaut LLC

Jan 2024 - Present (1 year 9 months)

Designed and optimized scalable REST/GraphQL microservices and Stripe payments, reducing response latency by 40% and scaling systems to 200k+ daily requests. Migrated a monolith to microservices on AWS ECS and implemented FCM push notifications and cron automation to cut manual overhead by 30%.

TypeScript AWS ECS REST APIs GraphQL Stripe Microservices Performance Optimization

Full-Stack Developer Intern

Bunk Infotech

Jan 2023 - Apr 2023 (3 months)

Built internal analytics dashboards and background job systems (cron + queues) for inventory sync and fraud checks, reducing support tickets by 25% and integrating Google Maps and FCM services. Collaborated with frontend and product teams in Agile sprints.

JavaScript MongoDB Google Maps Agile Analytics

Freelance Developer

Freelance

Jul 2020 - Dec 2021 (1 year 5 months)

Developed multiple mobile and web apps including a Bigbooster mobile app with 100k+ users and a CRM for a logistics company, digitizing manual workflows and improving operational efficiency. Delivered end-to-end solutions for startups and SMEs.