about.net-nerd.com

John Coxon

Principal Full Stack Software Engineer
& Cloud Systems Architect

Bridging complex technical execution with executive vision. I design and deliver systems that scale — from startup MVPs to global platforms serving millions.

Get in TouchView My Work ↓

25+

Years Experience

4

Enterprise Employers

1M+

FT Digital Subscribers

milestone contributed to

40+

Technologies

Node.jsTypeScriptReactPostgreSQLAzureAWSGCPKubernetes

About

25 years of building things that matter

I'm a Principal Full Stack Software Engineer and Cloud Systems Architect with over two decades of experience building software at every layer of the stack — from founding my own company in 2000 to leading platform engineering for one of the world's largest investment banks.

My speciality is bridging the gap between deep technical execution and executive vision. I've consulted at board level, led cross-functional engineering teams, and written the production code — often all on the same project.

Whether it's a greenfield architecture decision, a legacy system migration, or a critical performance problem, I focus on outcomes: scalable systems, measurable business impact, and engineering that lasts.

Work with me

Enterprise Scale

Designed and delivered global platforms at UBS and Financial Times handling millions of users and petabytes of data.

Business Impact

Engineering work that directly drove the FT to 1 million digital subscribers and enabled ISO 9001 certification for manufacturing clients.

Executive Collaboration

Experienced consulting at board level, translating technical complexity into strategic decision-making across global organisations.

Technical Skills

Tools of the trade

A working toolkit built across 25+ years of real projects — from startup prototypes to global enterprise platforms.

Languages & Frameworks

Node.jsTypeScriptJavaScriptPythonReactReduxNext.jsPHP

Databases

PostgreSQLMySQLMSSQLNeo4jDynamoDBBigQueryAmazon Redshift

Cloud & Infrastructure

MS AzureAWSGCPKubernetesDockerADLSDatabricksCloudFormation

Messaging & Streaming

Apache KafkaEvent HubAmazon SQSAmazon SNSAWS LambdaStep Functions

DevOps & Testing

CI/CDLinuxGitHub ActionsCircleCIJestAPI GatewayMicroservices

Design & Tooling

Tailwind CSSFigmaGitHub CopilotClaude CodeSalesforce SOQLREST APIs

Experience

Work history

Over 25 years across founding a company, agency work, and senior engineering roles at global organisations.

Synechron Ltd / UBS Group AG

Principal Full Stack Software Engineer & Cloud Systems Architect

January 2023 – April 2026

Led the design and delivery of a global Data Synthesizing Platform for UBS — a secure, enterprise-scale system for synthetic data generation with PII masking and geolocation-based data residency controls aligned to international regulatory standards. Took full-stack ownership across frontend UI/UX, backend microservices, event loop optimisation, database schema design, AI integration, and security frameworks.

  • Designed and built a secure synthetic data generation platform used globally across UBS
  • Implemented PII masking and geolocation-based data residency controls to meet international regulatory standards
  • Bridged executive leadership and engineering teams across multiple global functions
MS AzureKubernetesDatabricksNode.jsTypeScriptReactReduxPostgreSQLKafkaLinuxGitHub CopilotClaude Code

Financial Times Ltd

Senior Software Engineer & Cloud Architect

March 2017 – December 2022

Provided technical advice and engineering expertise on cloud-based systems and microservices for the Financial Times. Delivered solutions across the Marketing Automation department, a lead generation rebuild, billing integration with Salesforce, and multiple ETL pipelines. Work directly contributed to the FT reaching its 1 million digital subscriber milestone.

  • Built a real-time Marketing Automation System targeting customers via email, SMS, and in-app messaging
  • Directly contributed to the FT hitting 1 million digital subscribers through improved subscriber retention
  • Architected and delivered multiple cloud microservices on AWS across 5+ years
AWSAPI GatewayLambdaStep FunctionsHerokuNode.jsTypeScriptReactReduxPostgreSQLRedshiftBigQueryDynamoDBKafkaNeo4jCircleCIDockerCloudFormation

DCS Data Ltd

Full Stack Software Engineer

April 2007 – November 2016

Created and developed web-based business management systems for engineering companies — managing operations, stock, and full batch traceability of materials. Also built a management system for a multi-million pound turnover business in computer hardware sales.

  • Full batch traceability system enabled client to achieve ISO 9001 certification
  • Delivered systems that significantly reduced operating costs and increased revenue
  • Managed the complete development lifecycle from requirements to production
Node.jsPythonPHPPostgreSQLMySQLMSSQLDojo ToolkitJavaScript

Coxons Ltd

Founder & Software Engineer

March 2000 – March 2007

Founded and led a software company delivering web systems, e-commerce, CMS, and hosting solutions. Developed bespoke systems enabling customers to self-manage website content through secure logins, alongside email and web hosting infrastructure.

  • Founded company and delivered end-to-end web solutions for multiple clients
  • Built CMS platforms enabling client self-service content management
  • Delivered e-commerce, email, and web hosting solutions
PHPJavaScriptMySQLHTMLCSS

Featured Projects

Work I'm proud of

Selected projects across enterprise platforms, cloud microservices, and operational systems — each with a concrete, measurable outcome.

Enterprise Platform2023 – 2026

Data Synthesizing Platform

UBS Group AG via Synechron

A secure, global platform for synthetic data generation enabling UBS teams worldwide to work with realistic but non-sensitive datasets. The system automates PII masking and enforces granular, geolocation-based data residency controls in compliance with international regulations.

Impact

Deployed globally across UBS, enabling safe data usage across departments while maintaining full regulatory compliance across multiple jurisdictions.

Node.jsTypeScriptReactReduxPostgreSQLMS AzureKubernetesDatabricksKafkaLinux
Cloud Microservices2017 – 2022

Marketing Automation System

Financial Times Ltd

A real-time marketing automation platform built on cloud microservices, responding to live customer behaviour data. The system orchestrates personalised campaigns across email, SMS, and in-app messaging channels using event-driven process flows.

Impact

Directly contributed to the Financial Times achieving its landmark 1 million digital subscribers target through measurable improvements in subscriber retention.

Node.jsTypeScriptReactPostgreSQLAWS LambdaKafkaDynamoDBNeo4jDocker
ERP / Operations2007 – 2016

Business Management System

Engineering Industry (via DCS Data)

A comprehensive business management platform for engineering companies covering the entire operational workflow: cost calculations, procurement, quoting, stock management, inventory, job handling, invoicing, and full batch traceability of materials.

Impact

Full batch traceability enabled the client to achieve ISO 9001 certification, win new customers, significantly increase revenue, and reduce operating costs.

Node.jsPythonPHPMySQLPostgreSQLMSSQLDojo Toolkit

Get in Touch

Let's work together

Whether you're looking for an experienced engineer to lead a platform build, a technical consultant for a strategic initiative, or want to discuss how I can help your team — I'd love to hear from you.

j@coxons.com
john.coxons.com
LinkedIn