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I'm a developer who specializes in... from... Give an introduction about yourself, who are you, what are your most important skills and what differentiates you from other devs. This is the first thing clients will see. They are often interested in sector experience and knowledge, so please mention it. --- Employment and project experience Senior Developer Salesforce Inc. _January 2017 - March 2017_ Full-stack Developer Microsoft Inc. _January 2019 - March 2019_…I'm a developer who specializes in... from... Give an introduction about yourself, who are you, what are your most important skills and what differentiates you from other devs. This is the first thing clients will see. They are often interested in sector experience and knowledge, so please mention it. --- Employment and project experience Senior Developer Salesforce Inc. _January 2017 - March 2017_ Full-stack Developer Microsoft Inc. _January 2019 - March 2019_

Steven W. Barnhurst

Full Stack Developer, Front-End Developer, Web Developer, +3

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I'm a developer who specializes in... from... Give an introduction about yourself, who are you, what are your most important skills and what differentiates you from other devs. This is the first thing clients will see. They are often interested in sector experience and knowledge, so please mention it. --- Employment and project experience Senior Developer Salesforce Inc. _January 2017 - March 2017_ Full-stack Developer Microsoft Inc. _January 2019 - March 2019_…I'm a developer who specializes in... from... Give an introduction about yourself, who are you, what are your most important skills and what differentiates you from other devs. This is the first thing clients will see. They are often interested in sector experience and knowledge, so please mention it. --- Employment and project experience Senior Developer Salesforce Inc. _January 2017 - March 2017_ Full-stack Developer Microsoft Inc. _January 2019 - March 2019_

Available to hire

Berlin, Germany

I’m a developer who specializes in… from…

Give an introduction about yourself, who are you, what are your most important skills and what differentiates you from other devs. This is the first thing clients will see. They are often interested in sector experience and knowledge, so please mention it.

Employment and project experience

Senior Developer Salesforce Inc.
January 2017 - March 2017

Full-stack Developer Microsoft Inc.
January 2019 - March 2019

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Intermediate

Intermediate

Work Experience

Freelance Full-Stack Developer at Self-employed

December 1, 2024 - Present

Worked with a small start-up to integrate the front and back ends of their mobile game app and bring the product across the finish line. Developed and actively added to an application for writing and storing prompt blocks used by LLMs to generate trivia game questions, themed rounds, and related media. Designed and built full-stack applications for playing, hosting, and managing trivia events. Technologies used include Angular, NestJS, MongoDB, TypeScript, React Native, Google Gemini, NX, and GitHub Actions.

Senior Front-End Developer at Xeotek

February 28, 2024 - September 4, 2025

Implemented a modular frontend architecture, increasing app load speed by 30% and decreasing the initial codebase by over 50%. Eliminated UI freezes under high-volume data streaming by implementing web workers to handle data processing asynchronously. Integrated Cypress and Jest into the CI/CD pipeline, shortening the pre-release testing cycle from one week to a few hours. Collaborated with UX designers to create a scalable UI design system and component library updated with CSS variables exported from Figma. Technologies used include Angular, TypeScript, Electron, WebSockets, Web Workers, Storybook, Tailwind CSS, Docker, GitHub Actions, and Kafka.

Senior Full-Stack Developer at Safety IO

May 31, 2022 - September 4, 2025

Led the transition from a legacy hybrid AngularJS app to the latest Angular framework, increasing velocity for other 18 team members. Maintained zero communication or reporting failures between IoT devices, mobile, and web apps at the company. Mentored team members and organized developer workshops on topics such as reactive programming, modern CSS, accessibility, and modular architecture. Stack included Angular, TypeScript, Cypress, Jest, Node.js, Docker, Jenkins, AWS, and Material Design.

Senior Full-Stack Developer at TypeStudio

December 31, 2021 - September 4, 2025

Greatly improved UI responsiveness on pages with thousands of interacting elements by reworking the event handling system from the ground up. Utilized external APIs such as Firebase, Google Cloud Services, Rev.ai, and Stripe for file storage, audio transcription, translations, video rendering, and payments. Implemented a comprehensive testing strategy using Jest and Cypress, resulting in a nearly 40% reduction in post-release bugs. Technologies used include Angular, TypeScript, Firebase, Jest, Node.js, Google Cloud, and Tailwind CSS.

Lead Front-End Developer at Ringmaster Technologies

February 28, 2021 - September 4, 2025

Increased the speed of new feature releases from months to just days by creating a comprehensive library of fully configurable, reusable components. Improved code quality among UI developers by setting up linters, auto-formatters, test coverage checks, pre-build validators, and code-review checklists. Trained three full-stack (back-end heavy) developers on contemporary frontend architecture and UI/UX best practices. Stack included Angular, TypeScript, NgRx, Cypress, Jasmine, Java, SQL, Material Design, Docker, and AWS.

Full-Stack Developer at Convergys Corporation

December 31, 2018 - September 4, 2025

Developed applications to extract analytics and insights from various customer service data sets. Coordinated the transition of a large-scale application developed with AngularJS and a monolith back-end to one using Angular 2+ and a microservice-based backend. Participated in recruiting, interviewing, and onboarding new developers, contributing to the team's growth and culture. Stack included Angular, AngularJS, C#, .NET, Node.js, MongoDB, PostgreSQL, Material Design, Docker, Jasmine, and AWS.