Senior Software Engineer (Fullstack)Headshots.com | Remote (LATAM/EU preferred) | Full-Time ContractAbout Headshots.comAt Headshots.com, we're reimagining how professional headshots are created and delivered - from our core platform to a recently launched standalone AI product. Trusted by clients like Boeing, Capital One, and American Express, we transform smartphone selfies into polished, studio-quality portraits within three business days. Our work helps individuals and teams present themselves with consistency and confidence across digital platforms.The RoleWe're looking for a Senior Software Engineer who can take ownership of features end-to-end, contribute to architectural decisions, and execute with minimal hand-holding. You'll work directly with the Head of Engineering on a small team where your contributions will have immediate, visible impact.You'll work across our entire stack (PHP/React) but skew backend. You should be as comfortable designing a scalable queue system as you are debugging a React component, but your passion is in building robust server-side systems.We run a headless architecture - React frontends powered by a WordPress API backend handling user management, payments, and integrations. The backend is real PHP engineering, not plugin configuration. We're actively modernizing toward a clean architecture, so you'll be building new systems the right way while improving what's already there.What You'll DoBuild new features and integrations - from initial architecture through deployment, you'll own the full lifecycleMaintain and improve our existing codebase - squashing bugs, improving performance, and tackling technical debt alongside feature workConduct code reviews - help maintain quality standards and share knowledge across the teamWork on data and infrastructure - design and optimize MySQL databases, Redis caching, and background job systemsCollaborate across the company - work with operations and customer success to understand real user problems; occasionally join customer calls to hear feedback firsthandWhat We're Looking ForMust-Haves4+ years of professional software engineering experienceStrong backend fundamentals - you think in systems, data flows, and edge cases before writing codeModern PHP expertise - with experience scaling high-traffic applications beyond standard CMS cachingSolid React/JavaScript skills - comfortable on the frontend, even if it's not your primary focusSelf-directed - you figure things out, ask smart questions when stuck, and ship without needing to be managed closelyStrong English communication5+ hours of overlap with US Eastern TimeNice-to-HavesCloud infrastructure experience (AWS preferred)Payment system experience (Stripe)Background job/queue systemsCI/CD pipelines and DevOps practicesThird-party API integrations (CRMs, external services)Docker and containerizationDatabase performance tuning and optimizationThe PersonYou're someone who:Asks \"why are we building this?\" before \"how should I build this?\"Takes ownership and follows through without being chasedCommunicates proactively - flags blockers early, shares context generouslyCares about the product, not just the codeLogisticsContract: Full-time, long-term (40 hrs/week)Compensation: $25 - $30 USD/hour, depending on experienceLocation: Remote. LATAM/EU preferred; open to other regions if you can maintain 5-6 hours of overlap with US Eastern TimeSchedule: Flexible within overlap hoursHow to ApplyInterested? Send us:Your resume or LinkedInA brief note on a system you've architected or significantly improved - what was the problem, what did you build, what were the tradeoffs?Your availability and time zone