Rajesh Kumar

Senior Software Engineer

Delhi, India9 yrs 5 mos experience
Most Likely To Switch

Key Highlights

  • Led backend for a mobile app with 3M+ users.
  • Engineered robust e-commerce solutions for high traffic.
  • Spearheaded security enhancements for fintech applications.
Stackforce AI infers this person is a Backend Engineer specializing in scalable solutions for Healthcare and Fintech industries.

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Skills

Core Skills

MicroservicesApi DevelopmentWeb Application SecurityFeature DevelopmentMigration StrategyE-commerce SolutionsBackend DevelopmentFrontend DevelopmentFull Stack Development

Other Skills

AESAJAXAWSAmazon S3AngularJSApacheBack-End Web DevelopmentBitbucketBootstrapCSSCascading Style Sheets (CSS)Cloud ComputingCloud StorageCodeIgniterCoding Practices

About

Backend engineer with 9+ years of experience building scalable, high-performance systems using Java (Spring Boot), Go, Node.js, and PHP (Laravel). Skilled in microservices, event-driven architectures, real-time data streaming, and high-concurrency APIs, delivering resilient backend solutions for high-traffic applications. Currently, I lead the backend for Care Health Insurance’s mobile app, serving 3M+ monthly active users with cloud-native, event-driven microservices featuring real-time data streaming, asynchronous processing, and high concurrency handling. I build high-performance APIs and microservices in Spring Boot and Go, leveraging Kafka, Redis Pub/Sub, and Docker, with a strong focus on observability, structured logging, and fault-tolerant design. DevOps & Cloud Skills: Cloud Infrastructure: AWS (EC2, S3, CloudWatch, IAM) CI/CD Pipelines: Docker, Kubernetes, Jenkins, GitHub Actions Monitoring & Observability: CloudWatch, ELK Stack, Grafana Automation & Reliability: Infrastructure as Code, fault-tolerant deployments, high availability design Previously, at Madbow Fashion, I engineered a robust ecommerce backend for inventory, invoicing, and logistics, integrating with partners like Delhivery, ExpressBees, and Shiprocket — reliably handling thousands of transactions daily. I’m passionate about crafting modern, scalable, and resilient backend systems. If you’re building distributed architectures with Java, Go, Node.js, or PHP, let’s connect and collaborate!

Experience

9 yrs 5 mos
Total Experience
2 yrs 7 mos
Average Tenure
3 yrs 3 mos
Current Experience

Health insurance care

Senior Software Engineer

Mar 2023Present · 3 yrs 3 mos · Gurugram, Haryana, India · On-site

  • At Care Health Insurance, I currently lead the backend development for the mobile application, which serves over 1 lakh daily and 3 million+ monthly users. My focus is on delivering secure, high-performance, and scalable backend services tailored for mobile experiences. I also played a key role in building the company’s flagship website, careinsurance.com, which handles 80K+ daily and 2.4M+ monthly visitors.
  • To support this scale, I designed and implemented a microservices-based architecture for health policy management, resulting in a 30% improvement in API response time and 20% reduction in downtime. I led the migration of our permission infrastructure to AWS, leveraging EC2, RDS, and EFS to enhance reliability, scalability, and security. Additionally, I integrated major payment gateways and third-party services, increasing transaction success rates by 20%.
  • In my leadership role, I manage a team of 8+ developers, driving best practices through mentorship, code reviews, and architectural guidance. I also achieved a 30% performance boost in MySQL by optimizing queries, implementing smart indexing, and using Redis caching to maintain responsiveness under high-concurrency workloads.
JavaSpring BootMicroservicesAWSAPI DevelopmentMySQL+1

Quilinx

Senior Software Engineer

Jun 2022Mar 2024 · 1 yr 9 mos · Delhi, India · Remote

  • At Open Financial Technology, I play a pivotal role in driving innovation and security enhancements for our web application, serving a user base of over 3.5 million users. As a representative of QuilinX, our trusted resource partner, I collaborate closely with the in-house development team to accelerate feature development and ensure rapid deployment of new functionalities.
  • One of my key responsibilities involves enhancing the security posture of our platform by proactively identifying and addressing vulnerabilities. Through rigorous testing and meticulous code reviews, I help safeguard our users' sensitive financial data and uphold the integrity of our platform.
  • Additionally, I spearheaded a critical migration project to transition our file storage infrastructure from Amazon S3 buckets to Google Cloud Storage. Leveraging a gradual rollout strategy using Unleash, we seamlessly transitioned storage systems while minimizing disruption for our users. By initially deploying the solution to a subset of our user base, we ensured a smooth transition and mitigated potential risks.
Web Application SecurityVulnerability TestingGoogle Cloud StorageFeature Development

Madbow

Senior Lead Software Engineer

Jul 2019Mar 2022 · 2 yrs 8 mos · Gurgaon, India · Hybrid

  • As a dedicated software engineer at Madbow Fashion Pvt Limited, I am passionate about developing innovative solutions to transform the ecommerce landscape. At Madbow Fashion, I played a key role in building a comprehensive in-house solution using PHP and Laravel for robust order management, invoice handling, and inventory management.
  • For our logistics systems, I utilized Node.js and Express.js to create scalable and efficient solutions, seamlessly integrating with logistics partners such as Delivery, ExpressBees, and Shiprocket. By combining the strengths of both technologies, we ensured high performance and adaptability.
  • Our frontend, powered by Angular and other cutting-edge technologies, delivers an exceptional user experience. A major achievement of our work is our commitment to fostering business growth through adaptable solutions that streamline processes not only for us but also for other Shopify users.
PHPLaravelNode.jsExpress.jsE-commerce SolutionsBackend Development

Reculta

Frontend Developer | React.js

Apr 2019Jun 2019 · 2 mos · Gurugram, Haryana, India · On-site

  • During my brief tenure as a Frontend Developer at Reculta Solution Pvt Limited, I had the opportunity to work extensively with React.js to develop the user interface for an online campus recruiting platform. Despite the short duration, I made significant contributions to the platform's UI, enhancing the experience for colleges, students, and recruiters alike.
  • My role involved collaborating with cross-functional teams to understand user requirements and translate them into intuitive and visually appealing UI designs. By leveraging React.js, I implemented dynamic features and interactive elements that facilitated seamless communication and connections among users.
  • Although my time at Reculta was short, it was incredibly enriching. Working in a fast-paced environment taught me valuable lessons and honed my skills as a developer. The experience I gained laid a solid foundation for my future endeavors, empowering me to become a more proficient and adaptable developer.
React.jsUI DevelopmentCollaborationFrontend Development

Iarani inc.

Full Stack Developer | Lamp Stack

Jun 2016Mar 2019 · 2 yrs 9 mos · Gurgaon, India · On-site

  • I began my journey in the tech industry at Iarani Inc, where I had the privilege of starting as a Frontend Developer and gradually transitioning into a Backend Developer role before ultimately serving as a Full Stack Developer. Supported by the visionary leadership of the company founder and the encouragement of my colleagues, I embarked on a transformative professional journey that enriched both my personal and professional growth.
  • At Iarani, we specialized in crafting custom websites for clients in the US healthcare sector. Collaborating closely with stakeholders, I played a pivotal role in conceptualizing, designing, and developing user-friendly websites that not only elevated our clients' online presence but also fostered trust within the public domain.
  • One of the most challenging yet rewarding projects I undertook during my tenure was the development of a comprehensive recruiting platform tailored for MBA, CA, and lawyer candidates and recruiters. This platform facilitated seamless candidate-recruiter interactions, allowing candidates to showcase their skills and interests while enabling recruiters to identify and connect with the most suitable candidates through advanced filtering mechanisms. Leveraging social media APIs, psychometric tests, and innovative features like a 5-minute video intro section, we created a dynamic and engaging platform that revolutionized the recruitment process
Full Stack DevelopmentLAMP StackUser-Friendly Design

Education

Delhi University

Bachelor's degree

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