
Sebastian Welcome's you!
Your one-stop solution for professional software development. With experience in industries such as nuclear, automotive, medical, and fintech, I design and deliver scalable, reliable, and user-focused applications. From modern web interfaces to robust backend systems, I provide end-to-end solutions that meet both technical and business needs.
About Me
With a career spanning multiple industries — from nuclear energy and automotive engineering to medical technology and fintech — I have developed expertise in designing and delivering scalable, reliable, and user-centric applications. My background allows me to adapt quickly to new domains while maintaining a strong focus on both technical excellence and business value.
I specialize in modern frontend frameworks, robust backend APIs, and end-to-end system integrations, ensuring that solutions are not only functional but also maintainable, performant, and secure. Working in highly regulated and mission-critical sectors has strengthened my ability to deliver software that meets stringent quality, safety, and compliance standards.
Currently, at Westinghouse Electric Company, I contribute to building advanced software solutions for the nuclear energy sector, collaborating closely with engineers, product specialists, and stakeholders to deliver impactful tools that support innovation and safety.
Beyond my technical skills, I am passionate about continuous learning, exploring new technologies, and mentoring peers. I thrive in collaborative environments, where clear communication, adaptability, and problem-solving drive success.
My goal is to keep evolving as a professional — combining deep technical expertise with leadership skills — while contributing to projects that make a real difference in industries that matter.
Experience
Full Stack Engineer at Westinghouse Nuclear • Aug 2024 - Now
Build and maintain secure, high-performance Angular and .NET applications for the nuclear industry. Design RESTful APIs, optimize database queries, and enhance system performance. Manage multiple projects under strict regulatory deadlines and drive continuous improvement through emerging technologies.
Freelance Developer & Medical Studies • Oct 2022 - Jun 2024
Balanced medical studies with freelance web development projects, delivering client-focused solutions while honing analytical, problem-solving, and time-management skills.
Front End Engineer at Rumble Fish Development (Contractor for Optum) • May 2021 - Oct 2022
Designed and maintained customer-facing React applications using TypeScript, Redux, and Material UI. Built reusable components in a monorepo, improved accessibility and UI/UX compliance, managed deployments, conducted code reviews, and implemented automated testing for high-quality delivery.
Full Stack Engineer at Aptiv • Sep 2020 - May 2021
Contributed to an autonomous vehicle data validation platform, developing high-performance, scalable web applications for real-time processing of camera, radar, and LiDAR data. Delivered cross-platform solutions with robust performance and user-focused design.
Front End Developer at Spinney • Aug 2019 - Jan 2020
Developed highly responsive user interfaces with React, Redux, and Node.js for a fast-growing gambling app startup. Integrated NoSQL databases and delivered scalable, revenue-driving solutions that accelerated business growth.
Skills & Tools
A creative problem solver with over 2 years of programming experience, I've explored diverse programming languages, libraries, and technology stacks, honing my skills in both Frontend, Backend, and App development.
Eager to learn and adept at adopting new technologies, I thrive on expanding my skill set in the ever-evolving tech landscape.