Sep 2019 – Nov 2019 · 2 mos · Remote

• Betika is a sports betting platform with operations in Kenya and owned by Shop and Deliver Ltd.
• Engaged by Erlang Solutions and cooperated with Tembeza on re-implementing the back end of the Betika betting platform using Elixir in an effort aimed at increasing the performance of the system.
• Designed and implemented a new structure and tooling for the project repositories, based on Erlang releases and the monorepo approach, that decreased the overhead of maintaining separate repositories and increased the overall rate of the development in the team.

Jan 2019 – Jul 2019 · 6 mos · London, United Kingdom

• Real-time trading for blockchain based assets held in cold storage.
• Engaged to work on enhancements to a custom version of the Stellar platform. Implementing secure applications for Thales/nCipher HSM module using C. Integrating an HSM validator for the Cosmos Hub blockchain. Worked on a web application using React and MobX, Node.js, Apollo GraphQL API, Docker, and Google Cloud.
• Key Achievements:
• Contributed to the re-evaluation of the technology stack and company’s business model which resulted in a complete overhaul of its development undertaking.
• Redesigned the architecture of the web application and the server API model to better address business requirements.

Jul 2016 – Dec 2018 · 2 yrs 5 mos · Frankfurt Am Main Area, Germany

• Deutsche Bank is a German investment bank and financial services company and the 17th largest bank in the world by total assets. HCL Technologies is a multinational IT services company.
• Engaged via HCL as Team Leader / Technical Architect for Deutsche Bank to provide support for their projects including the introduction of MiFID II and migration to a new Team City/Git technology stack. Responsible for collaborating with the Programme Managers to discuss new requirements, distribution within the team, monitoring progress and assisting with any arising issues. Also for coordinating between Functional Analyst and Developers to define requirements in the Functional Specification and liaise with developers for implementation.
• Key Achievements:
• Successfully migrated the whole front-end code base from SVN to Git.
• Recommended, documented and successfully introduced a new Git branching model that allows for independent releases of modules and applications by different teams to different environments.
• Created a new set of TeamCity job templates successfully used to run over 100 jobs to test, publish to Artifactory and deploy to target environments of 20 separate project repositories.
• Designed and implemented a reusable architecture of React components and Redux and React Router helpers, now successfully used to load and initialise all front-end applications and modules.
• Introduced new JavaScript libraries allowing reuse of common installation scripts, testing frameworks, and core parts of the system across modules and applications.

Apr 2014 – Jan 2016 · 1 yr 9 mos · Hatfield, United Kingdom

• Torry Harris Business Solutions is a multinational provider of business, technology and consulting services headquartered in New Jersey, United States.
• Engaged by Torry Harris Business Solutions (THBS) to provide software services to their key clients including mobile network operator Everything Everywhere (EE). Responsible for providing support and consultancy to THBS staff developing new features, testing, integration, installation and maintenance of a cluster of servers constituting the PDF system for EE. Identified and resolved testing defects, implementing automated test cases and maintaining the testing framework based on Erlang Common Test.
• Key Achievements:
• Enhanced functionality and maintained scripts used to install new nodes in the cluster.
• Updated technical documentation and contributed to the design of new system features.
• Developed and introduced a new set of Erlang scripts with support for OTP-compliant release handling, subsequently used to install all new nodes in development, test and production.
• Refactored over 60 disparate Git branches into a set of new repositories and branches implementing best practice to industry Git workflow models.

Oct 2013 – Mar 2014 · 5 mos · Reading, United Kingdom

• Heath Wallace Ltd provides creative and engaging digital solutions for global brands in financial services and telecommunications.
• Engaged to support the development of a new web frontend for an HSBC banking application, responsible for the development of Dojo UI components using JavaScript, Dojo Toolkit, HTML5 and CSS.
• I implemented user interfaces with WAI-ARIA semantics and support for localisation and conducted accessibility testing Dojo Dijit widgets using JAWS Screen Reader and NVDA.
• Key Achievements:
• Re-implemented a sticky menu used on all web pages to ensure compatibility with a wide range of supported mobile devices.
• Refactored Dojo mixins used across widgets and classes to improve accessibility and support for internationalisation enabling automated loading of JSON stub files.
• Investigated and resolved a modal dialog issue occurring on a specific Android version.

Jul 2012 – Jul 2013 · 1 yr · Hatfield, United Kingdom

• Everything Everywhere (EE) is the largest mobile network operator in the UK.
• Engaged as Full Stack Developer supporting full life cycle development of an Operations, Maintenance and Configuration web application for a Policy Decision Function system. Led front end development of fluid web pages with JavaScript, jQuery, Dojo, Dijit widgets (including dgrid from Sitepen), HTML5, CSS3, Bootstrap framework, Sass / Compass and asynchronous client-side templates with Dust.js. Also led back end development and implementation of RESTful API with Erlang / Zotonic CMS.
• Key Achievements:
• Successfully developed complete releasing environment to create and switch between local and embedded erlang releases with custom per-server configuration files (created from Rebar templates) and minified CSS and JavaScript assets.
• Developed a complete releasing environment built on Node.js with minified CSS and JavaScript assets and local and embedded Erlang releases.

Jul 2007 – Present · 18 yrs 11 mos · London Area, United Kingdom

• Since 2007, I have operated as an Independent Contractor undertaking lead roles including Technical Architect, Team Leader, Senior Software Engineer, completing assignments for small startups and well-known blue chip organisations such as Deutsche Bank, EE, Microsoft and Symbian.

Dec 2001 – Jun 2012 · 10 yrs 6 mos · London, United Kingdom

• 01/2012 to 06/2012 : LoveThis : Senior Software Engineer; London; permanent
• 01/2011 to 09/2011: Penthera : Software Engineer; Pittsburg, PA, USA; contract; 100% remote
• 10/2009 to 12/2010 : Microsoft : Software Development Engineer in Test; Ireland; contract; 20% remote
• 07/2007 to 01/2009 : Symbian : Symbian C++ Developer; London; contract
• 07/2006 to 09/2006 : DataViz : Software Engineer; Milford, CT, USA; onsite assignment
• 01/2006 to 06/2007 : EMCC Software : Symbian C++ Developer; Manchester, UK; permanent
• 05/2002 to 12/2005 : ITSoft : C++ Developer & Team Leader; Kraków, Poland; permanent
• 12/2001 to 04/2002 & 08-11/2005: C# Developer; Poland; contracts