Available to hire
I am Terry Wilson, a Principal Full Stack Engineer and Co-Founder with over 20 years delivering scalable Ruby on Rails and React applications across healthcare, fintech, and education sectors. I have led performance optimisations, infrastructure modernisation, and migrations from monoliths to microservices, delivering outcomes such as 20x system scaling, 60% CI/CD reductions, and AI-powered data pipelines that cut manual workloads by 80%.\n\nI specialise in full-stack development (Rails 2-8, React, Next.js, TypeScript), microservices, cloud infrastructure, and AI/ML technologies, combining hands-on delivery with strategic leadership. As a consultant and co-founder, I help clients achieve reliability, speed, and innovative product experiences while guiding teams through complex architectural migrations and modernisation efforts.
Skills
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Experience Level
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Language
English
Fluent
Work Experience
Director / Principal IC at TWSS Consultancy Limited
April 1, 2018 - PresentDirector / Principal IC providing senior Rails and full-stack development services to enterprise clients across finance, healthcare, education and technology sectors. Focus on performance optimisation, infrastructure modernisation, and complex migrations including monolithic to microservices and cloud transitions. Achieved 60% CI/CD runtime reductions, 40% performance gains, and zero-downtime Rails upgrades. Expertise spans Ruby on Rails, React, Vue.js, PostgreSQL, Docker, Kubernetes, AWS, and event-driven architectures using RabbitMQ and Redis.
Senior Rails Developer at Lumin
September 1, 2025 - October 6, 2025Built on an existing React app (Redux/MUI) and Rails microservices to improve application responsiveness. Integrated AWS CloudWatch monitoring, reducing MTTR by 40%. Optimised Docker builds and CI/CD pipelines for faster deployments.
Principal Rails Developer at JPAD Solutions
February 1, 2023 - October 6, 2025Developed secure Open Banking API integrations with PCI DSS compliance. Refactored backend APIs, improving React frontend performance by 40%.
Senior Rails Developer at Currencycloud
December 1, 2022 - October 6, 2025Built Vue.js integrated Rails features for a financial services platform. Containerised environments reducing onboarding from 3 days to under 1 day.
Senior Rails Developer at Lumin
April 1, 2022 - October 6, 2025Led Rails 5 to Rails 6.1 migration with zero downtime. Developed microservices handling thousands of daily transactions.
Senior Rails Developer at Gather International
August 1, 2021 - October 6, 2025Designed GraphQL and REST APIs for mobile investment applications. Integrated payment gateways and KYC verification systems.
Senior Rails Developer at BPP
April 1, 2021 - October 6, 2025Developed frontend features across React and Ember.JS 3.x frameworks. Resolved Docker networking issues, enabling inter-environment communication.
Senior Rails Developer at Impero Software
March 1, 2021 - October 6, 2025Assisted development of monitoring and reporting features for student wellbeing services.
Principal Rails Developer at Tril by TV
October 1, 2020 - October 6, 2025Designed and built a Rails mini-CMS from scratch with Vue.js frontend and JWT authentication integrated with Azure Identity Connect. Public views and administrative interface. DSL to build future components.
Principal Rails Developer at Induction Healthcare
February 1, 2021 - October 6, 2025Led monolithic to microservices transformation enabling independent scaling. Migrated infrastructure to AWS improving uptime and deployment flexibility. Implemented WebSocket messaging with sub-100ms latency. Built CircleCI pipelines automating testing and deployment.
Senior Rails Developer at Radiant Worlds
April 1, 2018 - October 6, 2025Maintained Rails applications including corporate websites and forums. Implemented Devise authentication and integrated localisation with third-party translation services. Refactored monolithic application to API-first architecture. Built a JSON-API compliant ticketing system with EmberJS frontend.
Rails Developer at Concurrent Thinking
February 1, 2015 - October 6, 2025Maintained a suite of applications from Rails 2 to Rails 3.2.x. Optimised inefficient database queries. Modernised UI with CoffeeScript and SASS. Added SNMP network control support.
Lead Rails/.Net Developer at Palmer Hargreaves
July 1, 2014 - October 6, 2025Rebuilt and migrated server infrastructure from a physical data centre to VPS. Developed API for the 2014 World Cup mobile application. Built a SaaS digital asset management system.
Lead PHP Developer at Unique IQ
October 1, 2013 - October 6, 2025Modernised PHP/MySQL system for mobile device compatibility. Updated site with colourblind-friendly interface elements. Improved Windows application stability and resilience.
Mid-Senior .Net Developer at WS Atkins
August 1, 2012 - October 6, 2025Created bespoke SharePoint survey solution with custom search functionality. Designed and developed a Windows tablet-friendly application for Rail projects and contributed to multi-million pound billing system development.
Mid-Senior .Net Developer at Spring IT Solutions/SDA
January 1, 2005 - October 6, 2025Reworked internal ASP.NET system to reduce request times from ~60s to ~2s by optimizing ViewState handling. Worked on Y2K-related COBOL/Clipper tasks and related modernization efforts.
Director / Principal IC at TWSS Consultancy Limited
April 1, 2018 - PresentProviding principal IC and senior Rails development services to enterprise clients across finance, healthcare, education and technology sectors. Undertaking performance optimisation, infrastructure modernisation, and complex system migrations including monolithic to microservices transformations and cloud transitions. Delivered improvements including 60% CI/CD run-time reductions, 40% performance gains, and zero-downtime Rails upgrades.
Senior Rails Developer at Lumin
September 1, 2025 - October 6, 2025Built on existing React app (Redux/MUI) and Rails microservices improving application responsiveness. Integrated AWS CloudWatch monitoring, reducing MTTR by 40%. Optimised Docker builds and CI/CD pipelines for faster deployments.
Principal Rails Developer at JPAD Solutions
February 1, 2023 - October 6, 2025Developed secure Open Banking API integrations with PCI DSS compliance. Refactored backend APIs, improving React frontend performance by 40%.
Senior Rails Developer at Currencycloud
December 1, 2022 - October 6, 2025Built Vue.js integrated Rails features for financial services platform. Containerised environments reducing onboarding from 3 days to under 1 day.
Senior Rails Developer at Lumin
April 1, 2022 - October 6, 2025Led Rails 5 to Rails 6.1 migration with zero downtime. Developed microservices handling thousands of daily transactions.
Senior Rails Developer at Gather International
August 1, 2021 - October 6, 2025Designed GraphQL and REST APIs for mobile investment applications. Integrated payment gateways and KYC verification systems.
Senior Rails Developer at BPP
April 1, 2021 - October 6, 2025Developed frontend features across React and Ember.JS 3.x frameworks. Resolved Docker networking issues, enabling inter-environment communication.
Senior Rails Developer at Impero Software
March 1, 2021 - October 6, 2025Assisted development of monitoring and reporting features for student wellbeing services.
Principal Rails Developer at Tril by TV
October 1, 2020 - October 6, 2025Designed and built a Rails mini-CMS from scratch with Vue.js frontend and JWT authentication integrated with Azure Identity Connect. Public views and administrative interface. DSL to build future components.
Lead Rails Developer at Induction Healthcare
February 1, 2021 - October 6, 2025Led monolithic to microservices transformation enabling independent scaling. Migrated infrastructure to AWS improving uptime and deployment flexibility. Implemented WebSocket messaging with sub-100ms latency. Built CircleCI pipelines automating testing and deployment.
Senior Rails Developer at Radiant Worlds
April 1, 2018 - October 6, 2025Maintained Rails applications including corporate websites and forums. Implemented Devise authentication and integrated localisation with third-party translation service. Refactored monolithic application to API-first architecture. Built JSON-API compliant ticketing system with EmberJS frontend.
Rails Developer at Concurrent Thinking
February 1, 2015 - October 6, 2025Maintained suite of applications from Rails 2 to Rails 3.2.x. Identified and optimised inefficient database queries. Modernised UI with CoffeeScript and SASS. Added support for SNMP-based control.
Lead Rails/.Net Developer at Palmer Hargreaves
July 1, 2014 - October 6, 2025Rebuilt and migrated server infrastructure from physical data centre to VPS. Developed API for 2014 World Cup mobile application. Built SaaS digital asset management system.
Lead PHP Developer at Unique IQ
October 1, 2013 - October 6, 2025Modernised PHP/MySQL system for mobile device compatibility. Updated site with colourblind-friendly interface elements. Improved Windows application stability and resilience. Implemented structured version control.
Mid-Senior .Net Developer at WS Atkins
August 1, 2012 - October 6, 2025Created bespoke SharePoint survey solution with custom search functionality. Designed and developed a Windows tablet-friendly application. Developed a multi-million pound billing system to support rail project billing.
Mid-Senior .Net Developer at Spring IT Solutions/SDA
January 1, 2005 - October 6, 2025Reworked internal ASP.net system to achieve reduced request times; Y2K work on COBOL and Clipper systems.
Education
HND Computing at North East Worcestershire College
January 1, 1995 - January 1, 1997HND Computing at North East Worcestershire College
January 1, 1995 - January 1, 1997Qualifications
Industry Experience
Healthcare, Financial Services, Education, Software & Internet, Professional Services, Other
Skills
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Experience Level
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
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