Rajan Walia

Senior Software Engineer

Jagadhri, Haryana, India4 yrs 5 mos experience

Key Highlights

Led development of a panel reducing manual work by 90%.
Expert in backend development and system design.
Passionate about emerging technologies like Generative AI.

Stackforce AI infers this person is a Backend-heavy SaaS engineer with strong Fintech experience.

Contact

rajanwalia334@gmail.com LinkedIn

Skills

Other Skills

AWSCI/CD PipelinesDockerGrafanaJavaScriptJenkinsMicroservicesMySQLNestJSNew RelicRedashRedisTypeScript

About

Hello Techies, I’m Rajan Walia, a Senior Software Engineer at Paytm (Noida) with 4+ years of experience building scalable, high-performance backend systems. I began my journey at Scalenut Technologies, moving from intern to full-time engineer, where I worked on microservices, real-time monitoring, and system performance. At Gromo, I led the development of an internal admin panel that automated key operations and reduced manual work by over 90%, driving significant efficiency improvements. I specialize in backend development, system design, and DevOps — and enjoy solving complex engineering problems at scale. I’m passionate about emerging technologies, especially those that push the boundaries of infrastructure and automation, including Generative AI. I’m always open to meaningful connections with engineers, founders, and recruiters working on high-impact projects. Tech Stack 👨‍💻 Languages & Frameworks: JavaScript, TypeScript, Node.js, NestJS, Java, Spring Boot, Hibernate Databases: MySQL, MongoDB, Cassandra, DynamoDB Messaging & Communication: RabbitMQ, Apache Kafka, WebSockets Cloud & Infrastructure: AWS (EC2, S3, RDS, DynamoDB, Lambda, SQS, API Gateway, Route 53, Load Balancer), Serverless, Nginx, Docker Caching & Storage: Redis Monitoring & Analytics: Sentry, New Relic, Grafana, Redash DevOps & CI/CD: Jenkins, CI/CD Pipelines Architectural Patterns: Microservices Others: Generative AI 📩 Email: rajanwalia.tech@gmail.com

Experience

Paytm

Senior Software Engineer

Feb 2025 – Present · 1 yr 1 mo · Noida, Uttar Pradesh, India · On-site

Cashkaro.com

Software Development Engineer-2

Oct 2024 – Feb 2025 · 4 mos · Gurugram, Haryana, India · On-site

Developed multiple microservices for loan Integration of multiple lenders

Gromo

Software Development Engineer-1

Jun 2023 – Oct 2024 · 1 yr 4 mos · Gurugram, Haryana, India · On-site

◦ Re-engineered a highly scalable notification service leveraging queues to efficiently manage and send 100k+ notifications daily via SMS, email, push, WhatsApp, and IVR Calling.
◦ Design and developed a Credit service for fetching the customer’s credit details.
◦ Designed and developed a KYC microservice to streamline user verification using their PAN
and Bank Details.
◦ Migrated 4 Million+ customers data from data sources like MongoDB, MySQL and contributed in a central customer management service.
◦ Contributed to a Task Scheduler npm package which utilizes AWS-SQS to manage and process tasks.
◦ Developed an Internal Admin Panel which leads to a remarkable 90% reduction in manual efforts by automating processes for distributing scratch cards and wallet money.
◦ Collaborated closely with the DevOps team to optimize and streamline the EKS migration process.
◦ Documented the user journey with a detailed sequence and workflow diagram to ensure a smooth and efficient interaction.

Scalenut

2 roles

Software Engineer

Jun 2022 – Jun 2023 · 1 yr · Gurugram, Haryana, India · Remote

◦ Integrated Pub/Sub with Redis to scale WebSockets for boosting paragraph performance.
◦ Built an AWS Lambda based service for scraping HTML with the puppeteer.
◦ Leveraged Grafana for real-time database load monitoring during data migration initiative.
◦ Implemented Sentry error tracking to optimize bug-catching and resolution processes.

Backend Engineer Intern

Sep 2021 – May 2022 · 8 mos · Gurugram, Haryana, India · Remote

◦ Constructed and fine-tuned REST APIs using Node.js and MySQL, integrating generative AI for enhanced cruise mode workflow.
◦ Configured Cron Job to send regular email updates of admin panel logs to improve monitoring.