Sr. Full-Stack DeveloperWillDom Global, LLC. • Saint Paul, Illinois, United States
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Sr. Full-Stack Developer
WillDom Global, LLC.
- Saint Paul, Illinois, United States
- Saint Paul, Illinois, United States
Über
About the Role We’re looking for a talented Full‑Stack Engineer to join our tech team, crafting exceptional digital experiences that support TRX’s e‑commerce, education, and content platforms. Using modern stacks—from Next.js and Shopify to serverless AWS and Firebase—you’ll help scale our digital products, enabling more users globally to move better, feel better, and live better.
What You’ll Do
Develop and maintain TRX’s primary web applications (Shopify storefront, marketing pages, content portals) using Next.js, React, SCSS Modules, and Shopify + Liquid.
Implement custom Shopify APIs, including Shopify Functions, UI Extensions, and Custom Pixels, enhancing product discoverability and performance.
Build serverless backend services using Python (Flask / FastAPI), AWS Lambdas, and appropriate infrastructure, supporting APIs, webhooks, and integrations.
Design and manage data layers using Firebase, PostgreSQL, and GraphQL—fostering efficient data flow across apps and backend systems.
Integrate with payment and subscription platforms such as Stripe, Recharge, and RevenueCat to power e‑commerce, in‑app purchases, and recurring revenue.
Implement feature management and experimentation using Unleash (A/B testing), enabling data‑driven improvements.
Monitor and optimise application performance with tools like DataDog.
Ship fast via modern CI/CD pipelines (GitHub Actions, Vercel), with a focus on quality, reliability, and performance.
Collaborate cross‑functionally with product, design, marketing, and operations teams to rapidly prototype, test, and launch new features.
Required Skills & Experience
Proven experience with Next.js and React, including SCSS Modules or similar CSS‑in‑JS workflows.
Hands‑on with Shopify development: theme templating (Liquid), Shopify Functions, UI Extensions, Custom Pixels.
Backend development in Python (Flask or FastAPI) and familiarity with serverless architecture on AWS (including Lambdas).
Experience working with Firebase, PostgreSQL, and GraphQL for data modelling and APIs.
Integration knowledge of Stripe, Recharge, RevenueCat, or comparable payment and subscription services.
Familiar with A/B testing frameworks, e.g. Unleash, and performance monitoring via DataDog.
Comfortable with CI/CD pipelines, Git workflows, and deployment tools like GitHub Actions and Vercel.
Strong in debugging, testing (unit, integration, E2), and performance optimisation.
Excellent collaboration, communication skills, agile mindset, and customer‑first approach.
(Bonus) Experience with digital education platforms, fitness or wellness products, and scalable consumer apps.
Nice to Have
Experience developing or maintaining fitness‑related platforms (e.g. workout apps, live and on‑demand class systems).
Familiarity with mobile app backend (especially for TRX App).
Knowledge of user personalisation, recommendation systems, or content delivery optimisation.
Understanding of global scale, internationalisation (like localisation), and working in fast‑iterating product environments.
What We Offer Be part of a globally recognised, dynamic fitness brand that bridges physical hardware and digital innovation. Work on impactful products—apps, e‑commerce, education—that touch fitness professionals and enthusiasts worldwide. Fast‑paced, collaborative culture with autonomy, experimentation, and direct impact. Cutting‑edge stack, modern workflows, and room for professional growth. Competitive compensation and benefits (negotiable).
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Sprachkenntnisse
- English
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