Senior Fullstack Engineer (AI-proficient)

About JobHire.AI We believe that job searching should be smart, fast, and deeply human. People shouldn’t have to waste hours filling out pointless forms and answering repetitive questions. Today, JobHire.AI helps professionals uncover career opportunities and effortlessly secure interviews with hiring managers and recruiters—so they can focus on what truly matters: growth, family, and professional preparation. Company Facts 📈 ~35% MoM growth — top 1% growth rate globally. 💰 Profitable from day one. 👥 Team of 30 people. 🚀 Backed by top-tier investors: Deel Ventures, Daniel Gutenberg, Dave Waiser, Margulan Seisembayev, and other unicorn founders. Our Vision: JobHire.AI is a personal AI agent built for continuous professional development and workplace happiness. Responsibilities What you'll own Products end-to-end. You pick up a problem from product or a founder, write the spec yourself, decide what's in and out of scope, build it, ship it, and watch the metric. If the metric doesn't move, you figure out why and try again. A direct line to product. No PM in the middle. You talk to product directly, push back when you should, and decide together what's worth building this week. A team of agents. Claude (or whatever ships next month) handles code review, test generation, and boilerplate. You set the rules, review the reviews, and keep the bar for agent-produced code in your project above the company average. Production health in your area. Bug count, incidents, test coverage, the long-term shape of the codebase agents are touching. You own the number, and we measure it. Speed, measured. Lead time, throughput, agent cycle time. You'll have a personal baseline in week 2 and an improvement target by month 2. We don't count tickets closed. Saying no. Roughly a third of what lands on your plate shouldn't get built. The right answer is often "let's run a 2-day experiment first" or "this doesn't move a metric we care about". Push back with reasoning, not instinct. Requirements Experience & Mindset: English and Russian. Product Company Background: Strong experience in actual product-driven companies. You know how to measure feature success and care about retention, conversion, and UX. AI-Proficient: Practical experience integrating LLMs/AI tools into production apps, or a highly advanced workflow utilizing AI assistants to supercharge your development speed. Metrics > Backlog: A proven track record of shipping features focused on moving business KPIs rather than just writing code. Technical Stack: Strong knowledge of TypeScript / JavaScript and a deep understanding of Node.js. Commercial backend development experience with NestJS. Strong frontend experience with modern frameworks (React / Next.js). Experience with relational databases (PostgreSQL, MySQL, etc.) and query optimization. Experience working with MongoDB at scale (100M+ documents / 50GB+ of data). Experience with RabbitMQ. Deep understanding of the HTTP/1.1 protocol. Proven experience refactoring legacy codebases or major architectural components. Solid experience with version control systems (Git). Nice-to-Have: Experience designing complex information system architectures from scratch. Experience with Redis (caching, pub/sub). Experience working in Agile/Scrum environments. Engineering Team: You will be joining a highly mature environment. You will work alongside developers with 5+ years of industry experience and 2+ years of tenure on this specific project. No rigid bureaucracy—just a strong engineering culture and deep product ownership. Flexibility: Full-time engagement, 100% remote. Timezone: Working hours aligned with GMT+2 to GMT+5. $4000-6500 + 38 daysOff and sick leave.