Backend engineering
Production Java services, API contracts and maintainable application architecture.
Staff Engineer · Java Backend Specialist
Engineering backend systems that stay correct under pressure.
I design and deliver secure, resilient and observable Java platforms for payment, financial and enterprise workloads - from API contracts and data models to cloud operation and production troubleshooting.
Professional profile
Backend engineering beyond CRUD
My work centres on systems where correctness, reliability and operational clarity matter: payment flows, reconciliation, asynchronous processing, secure REST APIs and cloud-native services.
I approach architecture through explicit failure modes and trade-offs. That means defining transaction boundaries, idempotency, retry behaviour, observability, security and recovery paths before treating a service as production-ready.
Core expertise
Production-oriented backend engineering
Technologies are presented in the context of the engineering problems they solve, not as a disconnected keyword list.
Distributed systems
Service boundaries, failure handling, consistency and asynchronous workflows.
Data and performance
Transactional modelling, query optimisation, caching and performance validation.
Security and platform
Secure delivery, cloud-native operation and production observability.
Experience
Engineering delivery and technical leadership
More than eight years across payment, financial and enterprise backend systems.
Staff Engineer
Altimetrik · India
Jul 2024 - Present
- Own backend delivery for Java and Spring Boot payment services covering REST integrations, reconciliation, AWS messaging and storage.
- Integrated a payment gateway that reduced payment failures by 25% and improved transaction reliability.
- Validated workloads above 50,000 concurrent users, identified bottlenecks and improved throughput by 30%.
- Automated reconciliation through AWS Batch and Lambda, restoring 99.9% master-data consistency and reducing processing time by 70%.
- Modernised AWS SDK integrations and enforced IMDSv2 to improve throughput and remove metadata-service exposure.
Senior Developer
SubscribeIT · India
Aug 2021 - May 2024
- Re-engineered a legacy payment-processing platform as Spring Boot microservices and REST APIs, reducing processing time by 30%.
- Led an eight-engineer team delivering an algorithmic financial platform that exceeded previous benchmarks by 15%.
- Migrated critical banking services to AWS-oriented deployment patterns, lowering infrastructure cost by 25% and shortening release cycles by 40%.
- Established GitHub Actions pipelines that increased deployment frequency by 300%.
- Optimised JVM garbage collection, SQL access paths and latency-sensitive code, reducing peak response time by 20%.
Business Technology Analyst
Deloitte · India
Feb 2021 - Aug 2021
- Delivered Java microservice and REST enhancements while preserving API validation and error-handling standards.
- Created unit and service tests that reached 95% coverage and improved regression protection.
- Used chaos testing and Splunk diagnostics to validate recovery paths and resolve production defects.
- Mentored junior engineers on setup, debugging and testing practices.
Software Engineer
Zerone Consulting · India
Sep 2018 - Jan 2021
- Built enterprise Java backend services, REST/SOAP integrations and data-processing applications.
- Developed Hadoop and AWS EMR processing workflows to improve throughput and reduce storage cost.
- Automated Linux deployment tasks with shell scripting and improved maintainability using modern Java practices.
Education
Computer science foundation
Sep 2015 - Dec 2018
Master of Computer Application
Computer Science
Sree Narayana Gurukulam College of Engineering
Ernakulam, Kerala, India
Jun 2012 - Mar 2015
Bachelor of Computer Application
Computer Science
Indira Gandhi College of Arts and Science
Kothamangalam, Kerala, India
Featured work
Architecture and implementation case studies
Projects document requirements, architecture, trade-offs, failure scenarios, security, observability and operational constraints - not only source code.
In active development
E-commerce Microservices Platform
A production-oriented commerce backend demonstrating independently owned services, OAuth2 security, inventory reservations, payment workflows, reliable messaging and cloud-native operation.
In active development
Payment Processing and Reconciliation Platform
A payment-domain reference service covering authorisation, capture, cancellation, refund, provider idempotency, webhook verification, audit history and reconciliation of ambiguous outcomes.
Planned
Event-driven Notification Platform
A resilient notification pipeline that consumes domain events, applies user preferences, renders templates and delivers email or messaging notifications with retry, deduplication and dead-letter handling.
Contact
Let us discuss backend engineering opportunities.
Review the case studies and resume, then connect through email, LinkedIn or GitHub.