Senior Full-Stack Software Engineer

About Lumen Dynamics Lumen Dynamics is the growth desk for self-published authors. We give KDP authors one toolkit to grow their books on Amazon: keyword rank tracking, sales analytics, listing optimization, A+ Content design, category research, and reader review distribution. We're a small, remote-first team headquartered in the Boston area, building for authors who treat their books like a business. The role You'll ship product end to end: the data-heavy author dashboard, the public marketing site and free tools, billing, email, and the AI-assisted features that help authors write better listings. The codebase is a modern TypeScript monolith (Next.js, React, Tailwind, Prisma on PostgreSQL, deployed on Vercel) and you'll work across all of it. There's no ticket factory here. You'll take a problem from "authors keep asking for this" to designed, built, tested, and live, usually within days. You'll work directly with the founder and have real influence on what gets built, not just how. What you'll do Design and ship features end to end across the dashboard, marketing site, and free tools Own data models and API design for features that track and visualize book performance over time Integrate and maintain third-party services: payments, transactional email, and LLM providers Build AI-assisted product features with attention to cost, latency, and output quality Keep the system healthy: testing, error monitoring, performance, and sensible observability Review code, write clear technical docs, and raise the bar on engineering quality as the team grows What we're looking for 5+ years of professional software engineering, with significant production experience in TypeScript and React Strong relational database skills: schema design, query performance, and care around migrations Product sense. You ask why a feature exists, propose simpler versions, and notice when a flow will confuse a non-technical user You ship independently: scope a problem, make reasonable calls, and deliver without heavy process Clear written communication. We're remote and most decisions live in writing Care for correctness in the unglamorous places: billing, email, background jobs, third-party API failure modes Nice to have Deep Next.js App Router experience (server components, route handlers, caching) Stripe subscriptions and billing edge cases Experience shipping LLM-backed features to production Data visualization or charting-heavy UI work Compensation & benefits $150,000–$190,000 base salary, depending on experience Health, dental, and vision insurance 401(k) plan Flexible PTO plus company holidays $1,000 home-office setup budget An annual book stipend, naturally How we work We're fully remote across the US, with a home base in the Boston area. The team is small, communication is mostly written and async, and there's no layer between you and the founder. Work ships quickly and gets in front of real authors the same week. Equal opportunity Lumen Dynamics is an equal opportunity employer. We consider all qualified applicants without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, age, disability, veteran status, or any other characteristic protected by law. How to apply Apply through the form on this page. No cover letter required; a link to something you built and shipped, with a sentence on the hardest decision in it, is more useful to us than a formal letter. Originally posted on Himalayas