About

Calvin Matthews

I am a highly motivated and enthusiastic full stack developer, architect and leader with extensive experience in Java, Javascript and AWS.

I am proficient in developing robust scalable products to meet challenging targets and deliver key functionality. I have been involved at all stages of the software development life cycle for many projects, gathering requirements, design, implementation, launch and support.

I am a pragmatic leader, competent in strategic planning and tactical solutions, and excel in leading agile teams. My combination of excellent technical and communication skills with a firm understanding of business pressures enables me to motivate and stimulate teams to be productive whilst continuing to contribute in a hands on capacity.

Contact

Nationwide Building Society

Senior Applications Developer

Jul 2024 – Present

At Nationwide I am working with the team to modernise electronic payments.

Sky

Contract Developer

Jan 2022 – Apr 2024

At Sky I worked on the multi-tenancy identity management services that serve Sky Tv, Now TV, Peacock Tv, Sky Showtime and Showmax.

I migrated the products from a legacy data centre to an AWS Kubernetes cluster and contributed to the development of new streaming propositions. I optimised processes for partner support in Scala and created new services. The new services were created using Java 17, Gradle, Spring Boot, Couchbase, AWS, Docker, Podman, Gauge and Kubernetes with a CI/CD pipeline composed of Jenkins, Gradle and shell scripts.

I provided support using GCP, Splunk, Kibanna, Grafana, Prometheus and Lens, and performed critical data extractions and housekeeping using a variety of languages.

GE Aviation

Contract Software Engineer

2020 – 2022

As a full stack developer at GE my role was to provided technical leadership in the development of new micro services and the migration of existing service to an AWS stack for a number of aircraft diagnostic data processing systems.

The services were implemented in Java 11 and Typescript, using light weight tools such as Feign, Guice and JDBI, and a rich suite of AWS features including Lambda, SQS, S3, CloudFormation, SAM, DynamoDB, API Gateway and Kinesis Data Streams. All services were rigorously tested with a combination of TDD, Jenkins CI/CD pipeline and automated acceptance testing using Docker, LocalStack, Test Containers, Cucumber JVM, Serenity and Jest.

Elsevier

Contract Software Engineer

2014 – 2019

At Elsevier, I worked on a number of projects developing a range of products to enable author communication, financial transactions, back office management and content enrichment.

I led the design and development of new services using Java 11, Spring Boot, PostgreSQL, Liquibase, S3, SQS, DynamoDB, EC2, Elastic Search, React.js and Node.js.

I managed and co-ordinated the collaboration with globally distributes teams to successfully deliver the new services.

Mango Solutions Ltd.

Technical Team Lead

2013 – 2014

As technical team lead I was responsible for the design and development of new features for a web based product suite using Java 7, Spring, Spring MVC, Freemarker, Hibernate, REST, and Javascript.

Cognito Ltd.

Technical Team Lead

2012 – 2013

At Cognito, I was responsible for the development of a highly scalable middleware data aggregation server using Java 7, Maven, RabbitMQ, Spring, Hibernate, SQL and Tomcat.

Publishing Technology plc

Head of Engineering

2009 – 2012

As head of the engineering team for the pub2web and ingentaconnect products, I was responsible for planning, development and the management of day to day activities and changing priorities.

Comptel Corporation

Consultant Developer

2006 – 2009

Technical lead, responsible for the design and development of a new Service Activation product implemented using JEE, Javascript, SOAP, JMS, MDB, PL/SQL and JPA.

Abacus Group Plc

Team Leader

2003 – 2006

Team lead, responsible for the design and development of a proprietary ERP system, implemented using J2EE, Swing, JBoss, JMS, Toplink ORM, and DB2.

3 (Hutchison 3G UK Ltd.)

Java Server Developer

2002 – 2003

Development of a J2EE application for delivery of device independent content using XHTML, JSP and Servlets.

Connect2U / WH Smith News Ltd.

Java Architect

2001 – 2002

Re-engineering of an existing Java web site to make it more stable and scalable.

MDIS Ltd.

Senior Analyst Programmer

1998 – 2000

Development of a distributed computing solution for the Police implemented in Java.

Custima International Plc

Analyst Programmer/R & D Consultant

1994 – 1998

Development of a utility billing and customer information system, implemented in Progress 4GL.

Jaeger Co. Ltd.

Computer Programmer (Placement)

1992 – 1993

Progress 4GL development role.

University of Hertfordshire

1990 – 1994

B.Sc. (Honours) Computer Science

Ernesford Grange School and Community College

1983 – 1990

3 A’Level’s, 9 GCSE’s, 1 O’Level