Available for opportunities

Sri Rajan

Software engineer specialising in high-performance backend systems, microservices architecture, and scalable infrastructure. Building systems that handle real volume — reliably, at speed.

Current Role Full Stack Engineer · BrainSightAI
Experience 3+ Years Professional
Location Bengaluru, India
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Sri Rajan
80% API response time improved
100x Workflow automation scale-up
$500K Daily payments handled
99.9% Payment processing accuracy
About

Building systems that
scale with purpose

I'm a Software Development Engineer with over three years of professional experience, currently working as a Full Stack Engineer at BrainSightAI in Bengaluru. My work centres on backend architecture — designing systems that are not just functional, but built to handle real-world scale and pressure.

At Maxyfi, I progressed from intern to SDE II, taking ownership of critical infrastructure: payment systems processing hundreds of thousands of dollars daily, communication pipelines handling 150,000+ messages, and a distributed service architecture that dramatically reduced system load and downtime.

I work best at the intersection of technical rigour and product thinking — collaborating closely with product managers, documenting design decisions clearly, and mentoring teammates. My code ships on time, scales reliably, and rarely comes back as a production incident.

150K+ SMS/emails sent daily after workflow optimisation
99% Reduction in API server downtime via CPU offloading
60% Single-server load reduction via distributed orchestration
25% Sprint delivery efficiency improvement through team collaboration
Experience

Where I've
made an impact

BrainSightAI
Mar 2026 – Present
Bengaluru · Hybrid
Current Role
Full Stack Engineer 4 months
  • Building full-stack features for an AI-powered product, contributing across backend services and frontend interfaces.
  • Working within a hybrid team environment, delivering end-to-end engineering solutions with a focus on quality and scalability.
Maxyfi
Aug 2022 – Dec 2025
Chennai · On-site
Software Development Engineer II Apr 2025 – Dec 2025
  • Improved SMS and email deliverability by 50% by implementing Redis-based throttling.
  • Designed and built automated file processing, eliminating 100% of manual work via SFTP batch processing.
  • Monitored system performance with New Relic, reducing server downtime by 90%.
  • Offloaded CPU-intensive computation to slave servers, cutting API server downtime by 99%.
  • Improved sprint delivery efficiency by 25% through structured communication and thorough technical documentation.
Software Development Engineer I May 2023 – Mar 2025
  • Reduced single-server load by 60% through distributed service orchestration.
  • Improved API response time by 80% via optimised MongoDB indexing and data normalisation.
  • Built microservices for SMS, email, and templates using gRPC, RabbitMQ, and internal APIs.
  • Scaled daily communication from 1,500 to 150,000+ messages using event-driven messaging queues.
  • Mentored 2 junior developers to independently ship features and maintain code quality.
  • Optimised payment integrations handling $100K–$500K daily with 99.9% accuracy.
Software Engineer Intern Aug 2022 – May 2023
  • Integrated Keycloak for centralised RBAC supporting 1,000+ active users, replacing a monolithic auth system.
  • Reduced authentication failures and maintenance effort by approximately 70%.
  • Integrated payment gateways (Stripe, AcceptBlue), accounting platforms (ZohoBooks, Xero), and Twilio.
Technical Skills

A toolkit built for
production environments

Backend & Architecture
Node.js Express.js Microservices gRPC RabbitMQ REST APIs Redis SFTP Batch
Database & Storage
MongoDB Database Design Indexing Data Normalisation Amazon S3 SES
Frontend
React.js Redux.js TypeScript JavaScript HTML5 CSS3 Electron.js EJS
DevOps & Monitoring
New Relic Linux Git Performance Tuning Systems Design Debugging
Integrations & Auth
Keycloak OAuth Stripe AcceptBlue Twilio ZohoBooks Xero
Testing & Tooling
Mocha Postman Sourcetree PuTTY Python API Testing
Recommendations

What colleagues
say about working with me

I've had the pleasure of managing Rajan for 2+ years, and he is one of the most proactive developers I've worked with. He took ownership and was always the first to volunteer for challenging tasks. His ability to work independently while staying aligned with team goals made him a go-to person on our most critical tasks. I highly recommend him for his technical skills.

Abdullah P B Engineering Lead · Maxyfi
Direct manager, January 2026

Sri joined Maxyfi as a full-time intern during his final year and immediately impressed us with his energy and drive to learn. He quickly transitioned into a capable SDE 1, taking ownership of complex payment modules and stepping up to handle DevOps and support challenges when needed. Beyond his technical skills, Sri is the kind of person you can always rely on in a pinch. He has been a true asset to our team.

Joshy Varoky Francis Director · Award-Winning Collection Platform
Direct manager, January 2026
Education & Certifications

Academic
foundation

B.Sc. Computer Programming
The New College, Chennai
2020 – 2023
Community
Volunteer, Care & Welfare Foundation
Jun 2023 – Present · Social Services
Certifications
SQL Programming
LinkedIn Learning
2022
Become a Software Developer
LinkedIn Learning
2022
Python — LinkedIn Skill Assessment
LinkedIn
Passed
JavaScript — LinkedIn Skill Assessment
LinkedIn
Passed
Contact

Let's build something
remarkable together

Open to engineering roles, consulting engagements, and conversations about scalable backend systems.

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