- Role
- Frontend Engineer
- Experience
- 7+ Years
- Location
- Boston Area
- Status
- Open to Work
- Certified
- AWS Solutions Architect
Steven
Scheffelaar
Klots
I build polished, performant web experiences with React and TypeScript — with 7+ years of experience turning complex problems into clean interfaces.
I've worked on customer-facing tools at Constant Contact, including the main email editor used by thousands of customers, and contributed to frontend improvements across products at Cisco. I recently earned my AWS Certified Solutions Architect – Associate, building on the cloud deployment work I do day-to-day.
Building at Scale
These days I’m focused on deepening my skills and exploring new technologies across the stack, with an emphasis on writing reliable, maintainable software.
I use side projects like Borehammer.com — a full-stack app for the Warhammer community — to experiment with Python, AWS, and LLM-powered features, and to pressure-test ideas around architecture, testing, and deployment. I care as much about developer experience as user experience — clean APIs, solid testing, and build pipelines that don’t waste anyone’s time.
This site itself is a playground: I rebuilt it from Angular to Next.js and host it on AWS because the best way to learn is to ship.
When I'm not coding, I'm skiing, 3D printing, or painting miniatures.
Technical Skills
Frontend
Backend & Cloud
Currently Exploring
Independent Software Development
March 2023 – Present
- Built and maintain Borehammer.com, a full-stack React + Next.js application on AWS for Warhammer 40k scoring and community tools.
- Developed JobApp Analyzer with Next.js frontend and Python backend, parsing email data and leveraging LLMs for job application tracking.
- Created OpenDLE, a modular UI component library with React + Storybook focused on accessibility and composability.
- Rebuilt personal website from Angular to React with AWS hosting as a learning platform.
Software Engineer II
Constant Contact
November 2019 – March 2023
- Delivered next-generation email editor in ReactJS used by millions, collaborating across frontend, backend, QA, product, and UX teams.
- Spearheaded Read More Editor component utilizing external content extraction services.
- Built Table Editor component, adding a top customer-requested feature for content organization.
- Enhanced development process by resolving Jenkins pipeline issues and implementing ESLint standards.
Software Engineer II
Cisco Systems
February 2017 – September 2019
- Maintained AngularJS codebase and conducted training sessions for new developers.
- Reworked entire Cisco Cloudlock CSS architecture to match Cisco Umbrella styling.
- Developed React microapp for third-party authorization as part of ecosystem integration.
- Ported infrastructure to Terraform and deployed to FedRamp-compliant AWS environment.
Earlier Experience
Software Engineer Intern, Citrix
May 2016 – August 2016
Build verification testing and VPN gateway implementation.
Software Engineer Intern, Cloudlock
May 2014 – Sep 2015
Python/Flask automation, AngularJS UI features, worked with designers and backend teams.
Education
BS Computer Science
University of Massachusetts Lowell
August 2012 – May 2017
Let's Connect
I'm currently open to new opportunities in the Greater Boston Area. Whether you have a role in mind or just want to chat about React, TypeScript, or building better web experiences, I'd love to hear from you.