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Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Software Engineer - **Company:** MAMMOTH, INC. - **Location:** New York, United States - **Experience:** Expert - **Salary:** $170,000.0 - $182,500.0 - **Contract:** Permanent contract - **Skills:** JavaScript (Programming Language), Application Programming Interfaces (APIs), Data Analysis, Software as a Service, Code Review, Extract Transform Load (ETL), Software Debugging, Fault Tolerance, OAuth, Shopify, TypeScript, Web Usability, Google Tag Manager, Network Routers, ReactJS, Cloudflare, Graphql, Optimizely, Webhooks - **Published:** September 29, 2026 - **Apply:** https://startup.jobs/staff-software-engineer-dtc-lume-deodorant-10216733 ## About the Role * Substantial professional experience building and operating production e-commerce applications, with a track record of independently delivering projects on time in a live, revenue-generating environment. * Headless Shopify on React Router. Deep, hands-on experience is a must - Storefront API, Remix data loading and routing patterns, caching strategy, and the realities of running a headless storefront at scale. Shopify Hydrogen experience is important. * Strong JavaScript/TypeScript, modern React, and front-end performance fundamentals (Core Web Vitals, rendering strategy, bundle discipline). * Experience integrating third-party SaaS platforms via APIs and webhooks - including the unglamorous parts: idempotency, retries, rate limits, data reconciliation, and graceful degradation when a vendor is down. * Fluency in the practices that keep a storefront stable: testing, code review, observability, incident response, and releasing to production without impacting performance or reliability. * The ability to communicate a clear technical point of view in a group, understand the views of others, and commit to the team's decision. ## Description We're looking for a Software Engineer to join the Lume storefront team as a senior member. This is a hands-on, senior individual contributor role for an engineer who is sought out as a domain expert, structures and breaks down project work, and delivers end-to-end solutions on a small team. You'll own moderately complex problem areas across our headless Shopify architecture - storefront performance, subscription flows, loyalty, experimentation, and the integrations that tie them together. You'll set the technical direction in those areas, raise the quality bar for everyone working in them, and translate business needs into what we build. This role reports to the Lume Head of Technology and partners daily with Product, Growth, Retention, Creative, and Analytics., * Lead projects end to end. Structure and break down work on storefront initiatives, define the technical tasks needed to hit team objectives, and deliver solutions. * Own the quality bar. Deliver secure, testable, maintainable, low-defect, efficient work that is well designed and well documented. * Drive technical decisions in a complex domain. Weigh other engineers' points of view against business requirements and synthesize the best solution, not the loudest one. * Build consensus. Harmonize discordant technical views and lead the resolution of contentious issues - across engineering and with cross-functional partners. * Create the things that make others faster. Produce exemplars, frameworks, shared components, runbooks, and technical documentation that raise the ceiling for everyone working in the codebase. * Debug across the stack. Identify and correct defects-not just your own-across multiple technologies, from the Remix application and edge layer through third-party platform integrations. * Communicate to align. Structure technical communication and documentation that achieves alignment on decisions of broad scope across codebases, projects, and business functions. * Map business needs to technology. Influence the business processes and product decisions within the Lume domain, not just the code that implements them. * Grow the people around you. Actively share knowledge, create the structures and processes that make sharing routine, and coach less experienced engineers., * Custom Shopify Apps: Experience designing, building, and maintaining custom or private Shopify apps - Admin and Storefront GraphQL APIs, OAuth and webhook handling, app extensions, Shopify Functions and checkout extensibility - plus the operational side of keeping an app healthy as Shopify's API versions turn over. Bonus if you've had to decide when a problem warrants a custom app versus an off-the-shelf one. * Recharge for subscriptions - subscription lifecycle, billing cadence, and customer portal experiences. * LoyaltyLion for loyalty programs. * Cloudflare for headless app hosting - Workers, caching and cache invalidation, edge configuration, and WAF. * Google Tag Manager and the broader client-side measurement stack, including consent and data-quality considerations. * Optimizely or comparable experimentation platforms, and comfort designing tests that produce trustworthy results. * Experience in a DTC or subscription business, where storefront changes are measured in conversion and retention. * Experience with AI tooling and a habit of experimenting with it in your day-to-day engineering work. How you'll work here Our values describe the "how" of the job, and they matter as much as the technical work. At this level, that looks like: * Look Left to Find Right. You're sought out to help break down ambiguous problems, and you incorporate company direction into your team's technical work. * Improve Always. You share what you know deliberately, create the structures that let others learn from you, and invest in your own growth. * Embrace the Mammoth. You give clear feedback in every direction - up, down, and sideways - on quality, timeliness, and process, and you set explicit standards for what good looks like. * All In All Together. You set clear priorities, adjust in real time as the business changes, and respect the expertise of cross-functional partners. ## Related Videos - [Modern Headless Commerce with Vendure](https://www.wearedevelopers.com/videos/489-modern-headless-commerce-with-vendure) - [Watch Tests Go Brrrr! : Getting Started with Cypress in ReactJS](https://www.wearedevelopers.com/videos/282-watch-tests-go-brrrr-getting-started-with-cypress-in-reactjs) - [Putting the Graph In GraphQL With The Neo4j GraphQL Library](https://www.wearedevelopers.com/videos/257-putting-the-graph-in-graphql-with-the-neo4j-graphql-library) - [Keeping applications secure by evolving OAuth 2.0 and OpenID Connect](https://www.wearedevelopers.com/videos/100152-keeping-applications-secure-by-evolving-oauth-2-0-and-openid-connect) - [GraphQL + Apollo + Next.js: A Lovely Trio](https://www.wearedevelopers.com/videos/311-graphql-apollo-next-js-a-lovely-trio) - [Build and Deploy a Fullstack App with Open Source Tooling](https://www.wearedevelopers.com/videos/775-build-and-deploy-a-fullstack-app-with-open-source-tooling) ## Related Articles - [Dev Digest 120 - Apple and peers](https://www.wearedevelopers.com/magazine/455-dev-digest-120-apple-and-peers) - [Dev Digest 139 - Soft and hard queries](https://www.wearedevelopers.com/magazine/487-dev-digest-139-soft-and-hard-queries) - [Dev Digest 133 - Back to Front](https://www.wearedevelopers.com/magazine/474-dev-digest-133-back-to-front) - [How We Built a Worry-Free System That Runs for 10+ Years – And What We’d Do Again](https://www.wearedevelopers.com/magazine/751-how-we-built-a-worry-free-system-that-runs-for-10-years-and-what-we-d-do-again) - [Web Development Best Practices: What The Data Tells us](https://www.wearedevelopers.com/magazine/84-web-development-best-practices-what-the-data-tells-us) - [16 Best Free React UI Libraries in 2025](https://www.wearedevelopers.com/magazine/148-16-best-free-react-ui-libraries-in-2025)