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I am a highly experienced Senior JavaScript Developer with over 10 years of expertise in developing and maintaining complex web applications for government and finance sectors. I am proficient in modern JavaScript frameworks like React and Node.js and have strong skills in TypeScript, AWS, and cloud technologies. I excel at working in both dynamic startup environments and large corporate settings, leading teams, optimizing codebases, and delivering high-quality software solutions that align with organizational objectives. Throughout my career, I've contributed to significant projects across public and financial sectors, consistently improving code quality, performance, and user experience. My technical proficiency combined with my leadership and mentoring skills allows me to support and enhance team capabilities effectively.…I am a highly experienced Senior JavaScript Developer with over 10 years of expertise in developing and maintaining complex web applications for government and finance sectors. I am proficient in modern JavaScript frameworks like React and Node.js and have strong skills in TypeScript, AWS, and cloud technologies. I excel at working in both dynamic startup environments and large corporate settings, leading teams, optimizing codebases, and delivering high-quality software solutions that align with organizational objectives. Throughout my career, I've contributed to significant projects across public and financial sectors, consistently improving code quality, performance, and user experience. My technical proficiency combined with my leadership and mentoring skills allows me to support and enhance team capabilities effectively.

Alfonso Enciso

Web Developer, Programmer, Developer, +2

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I am a highly experienced Senior JavaScript Developer with over 10 years of expertise in developing and maintaining complex web applications for government and finance sectors. I am proficient in modern JavaScript frameworks like React and Node.js and have strong skills in TypeScript, AWS, and cloud technologies. I excel at working in both dynamic startup environments and large corporate settings, leading teams, optimizing codebases, and delivering high-quality software solutions that align with organizational objectives. Throughout my career, I've contributed to significant projects across public and financial sectors, consistently improving code quality, performance, and user experience. My technical proficiency combined with my leadership and mentoring skills allows me to support and enhance team capabilities effectively.…I am a highly experienced Senior JavaScript Developer with over 10 years of expertise in developing and maintaining complex web applications for government and finance sectors. I am proficient in modern JavaScript frameworks like React and Node.js and have strong skills in TypeScript, AWS, and cloud technologies. I excel at working in both dynamic startup environments and large corporate settings, leading teams, optimizing codebases, and delivering high-quality software solutions that align with organizational objectives. Throughout my career, I've contributed to significant projects across public and financial sectors, consistently improving code quality, performance, and user experience. My technical proficiency combined with my leadership and mentoring skills allows me to support and enhance team capabilities effectively.

Available to hire

I am a highly experienced Senior JavaScript Developer with over 10 years of expertise in developing and maintaining complex web applications for government and finance sectors. I am proficient in modern JavaScript frameworks like React and Node.js and have strong skills in TypeScript, AWS, and cloud technologies. I excel at working in both dynamic startup environments and large corporate settings, leading teams, optimizing codebases, and delivering high-quality software solutions that align with organizational objectives.

Throughout my career, I’ve contributed to significant projects across public and financial sectors, consistently improving code quality, performance, and user experience. My technical proficiency combined with my leadership and mentoring skills allows me to support and enhance team capabilities effectively.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Work Experience

Senior JavaScript Consultant at Home Office

April 1, 2025 - Present

Explored the React/TypeScript UI, ran and debugged key user flows locally, and drafted a list of 10+ refactor suggestions. Helped migrate Angular to React SPA to Next.js and Vite repos for coding consistency and maintainability. Participated in daily standups and peer reviews, providing feedback on TypeScript typings, React hook patterns, and test coverage gaps, helping maintain code quality. Technologies used included Docker, Kubernetes, Drone, ECR, Artifactory, Sysdig, React, Node.js, Next.js, Vite, Jest, and TypeScript.

Senior JavaScript Consultant at Informed Solutions

April 1, 2025 - August 29, 2025

Enhanced code coverage for the LISA project to 80% and implemented Material UI into the user interface. Resolved 95% of identified SonarQube issues. Worked with AWS, React, MUI, Vue.js, Jest, and Node.js technologies on a public sector project under the Department for Business & Trade.

Senior JavaScript Consultant at Bank of England

November 30, 2024 - August 29, 2025

Assisted in migrating Auction and Bilateral Trading Java applications into a fully-fledged C# .NET API with a React frontend. Technologies included C#, React, Redux, ShadCn UI, Jest, TypeScript, Git, Azure, and SQL Server within the finance sector.

Senior JavaScript Consultant at Cabinet Office

August 1, 2024 - August 29, 2025

Translated templates into GDS Nunjucks templates and created React components for the frontend as part of the OneLogin Home team. Maintained and optimized codebase for reliability and performance using AWS Lambda, CloudFormation, and other AWS technologies. Worked with React, Node.js, Next.js, Nunjucks, TypeScript, AWS, Jest, GitHub, Docker.

Senior JavaScript Consultant at News UK

April 1, 2024 - August 29, 2025

Implemented a caching solution to handle 1 billion users a month, reducing the monthly bill by 90%. Maintained and enhanced the current codebase, integrating new features reliant on third-party API integrations for advertising bids. Updated and refined code to align with latest industry standards and package versions. Ensured seamless operation of all publications and promptly resolved platform bugs. Technologies used included Vanilla JavaScript, React, Next.js, PHP, Redux Saga, SASS, Jest, TypeScript, AWS, and Terraform.

Senior .Net Consultant at Bank of England

August 1, 2023 - August 29, 2025

Transitioned legacy code to the latest React and npm packages. Enhanced and expanded functionality of the internal reporting tool through refactoring and feature development. Participated in all stages of the test cycle and shared technical knowledge with the team. Maintained relevant documentation. Technologies included C#, Node.js, React, Redux, D3.js, Redux Saga, SASS, Jest, TypeScript, Git, Azure, and SQL Server.

Senior JavaScript Consultant at Home Office

December 1, 2022 - August 29, 2025

Developed and maintained the Home Office European Registration web application as part of the EU Exit program. Developed and maintained the Home Office's internal security reporting tool to enhance security posture by streamlining incident tracking, analysis, and response processes. Technologies used included Node.js, Next.js, Chakra UI, React, Redux, Redux Saga, SASS, Jest, Docker, Redis, PostgreSQL, TypeScript, Git, GraphQL, RESTful API, AWS, and Cypress.