Senior Full Stack Software Engineer Jobs in Riverhead, NY

At ASSA ABLOY, our mission is to make securely accessing the things in your life noticeably easier, without being noticeable.

As a Full Stack Developer, you will take ownership of our internal design system - a versioned suite of React components, Tailwind configurations, and headless primitives published as NPM packages and used across the organization. You will design clean, reusable, strongly typed component APIs, build highquality product interfaces in React, and contribute to our Laravel backend where needed. You'll collaborate closely with design, product, and backend engineering to deliver interfaces that are accessible, performant, and visually consistent.

A significant portion of this work focuses on CMSdriven marketing and landing experiences. You'll build and integrate designsystem components that empower content authors to assemble pages, and you'll connect those pages to external digital tools and thirdparty services.

This is a frontendleaning role with meaningful fullstack scope. While you spend most of your time in React, you will also consume - and occasionally extend - our Laravel APIs. The role is handson and technically influential: you'll help set architectural direction and mentor other engineers, without direct peoplemanagement responsibilities.

This position will sit on-site in Berlin, CT reporting to the Director of Marketing.

What you will be doing

• Strong JavaScript/TypeScript fundamentals, comfortable in TS strict mode; fluent with type-modeling patterns (discriminated unions, generics, type narrowing) for safe, expressive component APIs
• Deep React: component design and composition, state and data flow, performance; familiarity with a React meta-framework (Next.js)
• Semantic HTML and CSS, with strong Tailwind fluency (utility-first, shared config, design tokens); responsive, accessible UI - WCAG awareness, ARIA patterns, keyboard navigation, focus management, screen-reader/contrast testing
• Component API design: building reusable, well-typed primitives that other engineers depend on
• Design-system & Monorepo workflow: publishing versioned shared packages (Changesets or similar) and orchestrating builds across a monorepo (Turborepo, Yarn/NPM workspaces, or equivalent)
• Rendering & architecture fundamentals: CSR/SSR/SSG/ISR tradeoffs; SPA vs MPA vs hybrid; request/response lifecycle; HTTP caching and CDN behavior
• Comfort in a layered / n-tier codebase: clear separation of concerns, knowing where logic belongs, and the willingness to work across the stack into a server framework
• Client-side data, forms, and routing: fetching and caching, schema validation, client routing
• Third-party integrations: connecting external digital tools and APIs (marketing, analytics, CMS, and similar services) reliably and securely - including script-loading strategy and consent
• Technical vendor assessment: evaluating third-party tools and vendors on technical merits - API quality, integration effort, reliability, and lock-in
• Translating Figma designs into code: faithful, accessible, reusable components from design specs
• Testing strategy: unit/component and E2E, with judgment about what to test where
• CI/CD and containerization: comfort with automated pipelines (GitHub Actions) and Docker-based workflows
• Web performance: Core Web Vitals (LCP, INP, CLS) measurement and remediation
• SEO & structured data: structured data (JSON-LD) and on-page SEO fundamentals; awareness of GEO (generative engine optimization)
• CMS fundamentals: content modeling, authoring workflows, headless vs traditional tradeoffs, static site generators
• Git workflow, code review, and strong async/written communication

What we are looking for

• Bachelor's Degree in Computer Science or Engineering and/or a High School Diploma/GED required.
• Minimum of 5 years of professional full stack development experience with a strong focus on front end UI skills.
• Must have strong hands-on experience with Tailwinds and React.js to be considered.
• Must demonstrate a solid foundation of HTML, CSS, JavaScript, HTTP, and Restful APIs.
• Must have hands-on coding experience in PHP.
• Must have backend development skills using SQL or SQL Databases.
• Experience architecting and shipping backend RESTful APIs using Node.js.
• Experience with DevOps and working with cloud platforms.
• Familiarity with front-end and backend performance Best Practices.
• Experience with common software development tools and processes.
• Proficiency in Microsoft Office tools.

Preferred Skills:

• Adobe Experience Manager (AEM): Component development across Maven modules, authoring dialogs, clientLibs, Dispatcher, Apache Sling Models (Java), JCR/Oak.
• Experience leading a development team or acting as a tech lead
• MarTech & analytics tooling: GTM, GA4, cookie consent (OneTrust), Search Console
• Server framework experience: Laravel/PHP or equivalent
• DevOps breadth beyond pipelines: serverless vs server-based, DNS/CDN, secrets management
• Observability awareness: error tracking (Sentry), APM, structured logging

What we offer

We are passionate about providing amazing opportunities and benefits, so that you can enjoy a lifelong career with us. 

• Continuous professional development opportunities and an environment that fosters internal growth and mobility.
• Competitive compensation and benefits package which includes multiple healthcare options, tuition reimbursement, and matching 401k.
• Generous holiday schedule and paid time off to refresh and recharge.
• Employee pricing on our products and discount programs for travel, entertainment, and more!

We review applications regularly, so don't hesitate, apply today!

We are the ASSA ABLOY Group

Our people have made us the global leader in access solutions. In return, we open doors for them wherever they go. With nearly 63,000 colleagues in more than 70 different countries, we help billions of people experience a more open world. Our innovations make all sorts of spaces - physical and virtual - safer, more secure, and easier to access. 

As an employer, we value results - not titles, or backgrounds. We empower our people to build their career around their aspirations and our ambitions - supporting them with regular feedback, training, and development opportunities. Our colleagues think broadly about where they can make the most impact, and we encourage them to grow their role locally, regionally, or even internationally.

As we welcome new people on board, it's important to us to have diverse, inclusive teams, and we value different perspectives and experiences.