Full Stack Engineer
Tajinder Pal Singh
I am a
Building scalable web applications and solving complex problems with modern technologies
Featured Projects
Impact-Driven Solutions
Leading complex technical initiatives and delivering measurable business value
Profile Pensions Platform Modernization
Moneyfarm
100,000+ Active Users
Led the complete transformation of the Profile Pensions platform, upgrading to React with TypeScript and implementing a hybrid state management approach. Integrated robust testing strategy with Cypress and Jest.
Improved platform performance and reliability for 100K+ users
Implemented comprehensive testing strategy (E2E + Unit)
Delivered seamless user experience with modern tech stack
Two-Factor Authentication (2FA) System
Moneyfarm
20% Adoption in First Month
Led the design and implementation of a 2FA system using Python and Flask for a £5B+ fintech platform. Established security standards, handled threat modeling, and ensured compliance with financial industry regulations.
Designed security architecture aligned with FCA compliance requirements
Built Python/Flask backend handling 100K+ users with sub-100ms authentication response time
Launched with 20% user adoption in first month
Guided team on secure authentication patterns and cryptographic best practices
Travelodge Platform Migration
HCL Technologies (Travelodge)
<1% Downtime
Spearheaded the transformation of Travelodge's core booking platform from monolith to microservices architecture using Next.js and React, ensuring reliability for both business and leisure travelers.
Achieved under 1% downtime during migration
Reduced booking time by 40% with backend redesign
Delivered seamless experience for thousands of daily bookings
Real-Time Data Analytics Pipeline
HCL Technologies (BBC)
50% Faster Reporting
Designed and deployed a real-time analytics pipeline for BBC's voice-enabled applications (CBeebies, BBC News) using AWS Lambda and Node.js, accelerating data-driven decision-making.
Reduced reporting latency by 50%
Created reusable npm library for Kinesis ingestion
Powered analytics for 10+ BBC applications
Microservices Integration via Kafka
Moneyfarm
Real-Time Sync
Built the architecture to integrate Profile Pensions (Node.js) and Moneyfarm (Python/FastAPI) using Kafka and event-driven patterns. Ensured reliable data synchronization across platforms handling £5B+ in pension assets.
Designed Kafka-based event streaming with Protobuf for cross-platform pension operations
Achieved 99.99% data consistency between Node.js and Python services with no data loss
Set integration standards and reviewed architecture decisions across teams
Coordinated pension workflows (find, check, transfer, status) with transactional guarantees
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