Developed Node.js - based GraphQL services, writing resolvers, queries, and mutations to optimise data access and improve performance across React / Next.js frontends.

Built high performance backend services with Flask and FastAPI using python, implementing JWT authentication, data validation with Pydantic, and integrating with PostgreSQL / MongoDB databases

Engineered microservices architecture to integrate Profile Pensions (Node.js) and Moneyfarm (Python) platforms using Kafka (two-way streaming) and Protocol Buffers (Protobuf) for real-time pension data synchronization including find, check, transfer, and status tracking.

Upgraded the Profile Pensions online management platform to React + TypeScript, implementing a hybrid state management approach with Redux and Context API. Enhanced test reliability through Cypress (E2E) and Jest + React Testing Library (unit/integration), improving performance and UX for 100k+ active users.

Architected PostgreSQL database schemas with trigger functions for cross-table validation and audit logging. Optimized complex queries using CTEs, window functions, and strategic indexing (B-tree, GiST, GIN), leveraging EXPLAIN ANALYZE for profiling and tuning.

Designed and deployed scalable serverless APIs with AWS Lambda, API Gateway, and Node.js within a VPC, integrating seamlessly with SQS, Kinesis, S3, CloudWatch, and DynamoDB to build event-driven, fault-tolerant architectures.

Designed, built, and operated Google Cloud–native services leveraging Cloud Run, Pub/Sub (with Dead Letter Topics), Cloud Storage, Cloud KMS, and Kubernetes (Ingress/Egress, Helm-based deployments), supported by fully automated CI/CD pipelines using CircleCI.

Migrated the Profile Pensions marketing website to Gatsby + Contentful CMS, aligning design, performance, and UX consistency with the Moneyfarm main website.

Enhanced internal user search and analytics by integrating Grafana and Jaeger, optimizing API queries with pagination and caching to eliminate redundant calls, resulting in a 50% boost in data processing efficiency.

Developed Python microservices using FastAPI for high-performance APIs and Flask for internal dashboards, enabling rapid prototyping, modular design, and smooth integration with existing AWS-based pipelines.

Microservices Migration: Transformed Travelodge's monolithic platform (PHP, HTML, jQuery, CSS) into a scalable microservices architecture with Next.js and React. Achieved <1% downtime, reduced errors, and boosted reliability for business/leisure travelers.

Dynamic Discounts: Integrated MoEngage for personalized discount logic based on hotel, breakfast, and Wi-Fi selections. Drove higher user engagement and conversion rates.

Backend Redesign: Rewrote PHP Symfony modules in Node.js, integrating Oracle OPERA PMS APIs. Optimized booking/availability flows, accelerating bookings by 40%.

Real-Time Analytics: Architected AWS Lambda + Node.js Express pipeline for voice applications (CBeebies, BBC News), with ATInternet and BigQuery as primary data consumers for reporting. Delivered 50% latency reduction via generic, extensible architecture supporting additional third-party integrations for accelerated data-driven decisions.

NPM Library: Developed reusable AWS Kinesis ingestion library, enabling real-time analytics for the across 10+ applications.

Developed and optimized a full-stack warehouse management system using Angular 4, Node.js, and DynamoDB. Leveraged serverless architecture with API Gateway, Lambda, Kinesis, and SNS for fast data access, deployed via AWS Serverless Application Model (SAM) YAML configurations.

Designed and deployed Elasticsearch solution with CloudFormation YAML stacks to accelerate search performance, enable real-time analytics, and support complex queries across high-volume datasets.

Engineered high-performance SPAs using React and Node.js, boosting page load speed by 40% and integrating a PubNub-based real-time notification system that halved response times, enhancing user engagement.

Led deployments & DevOps for high-traffic applications on DigitalOcean, configuring and fine-tuning Nginx with TLS encryption to enhance performance, security, and scalability across client projects.

Automated CI/CD pipelines using Jenkins and Docker containers, streamlining deployments for multiple web/mobile apps and reducing release cycles from days to hours while maintaining zero-downtime updates.

Delivered scalable enterprise applications using.NET Framework + ASP.NET MVC, developing RESTful Web APIs that powered mission - critical systems for 5 + corporate clients with 99.9 % uptime.

Architected Publisher - Subscriber messaging system using WCF over TCP, achieving 99.9 % message delivery reliability and enabling real - time data synchronization across distributed enterprise environments.

Led full - stack CRM development with ASP.NET MVC + Entity Framework, streamlining client interactions and boosting team productivity by 20 % through automated workflows and dashboards.

Developed Windows Forms Kiosk application for self - service operations, integrating SQL Server backend with touch - optimized UI, handling 1,000 + daily transactions with robust offline capabilities.

Collaborated with stakeholders through Agile sprints, delivering solutions that improved client operations by 20 % via optimized business processes and custom reporting modules.

Implemented advanced authentication using ASP.NET Identity + OAuth, securing enterprise APIs and enabling seamless SSO across multiple client applications and third - party integrations.

Optimized database performance using SQL Server stored procedures, indexing strategies, and LINQ - to - SQL queries, reducing report generation times by 60 % for executive dashboards.