• Offer architectural guidance • Spearhead critical design choices • Guarantee delivery adheres to enterprise architecture and platform standards

Role Description - Own and drive the backend direction of the company as one of the key technical leaders; - Design and implement new game mechanics on top of our existing PGS, extend its capabilities, and contribute to core gameplay engine development; - Architect scalable, secure, and high-performance backend services using Node.js and TypeScript; - Work closely with Game Logic, Frontend, and DevOps teams to ensure seamless integrations, real-time performance, and platform-wide consistency; - Define backend engineering standards and enforce best practices across code quality, architecture, and performance; - Design and maintain backend infrastructure: schemas, caching, messaging flows, microservices, gateways; - Participate in roadmap planning, technical decision-making, and architectural discussions as the platform evolves; - Support a rapidly growing product and engineering environment — we are scaling fast, and you will play a major role in that growth. Qualifications - 5+ years of backend development experience, including ownership of complex systems or features; - Strong expertise with Node.js + TypeScript and modern frameworks (Fastify, Nest.js); - Advanced knowledge of SQL and NoSQL databases: PostgreSQL, MongoDB, Redis; - Solid experience with message brokers (RabbitMQ or Kafka) and queue-based, event-driven design patterns; - Deep understanding of distributed systems, microservices, and real-time communication (WebSocket, Socket.io); - Experience building high-performance APIs, async flows, caching strategies, and scalable architectures; - Confident with CI/CD, Git, automated testing (Jest), and monitoring/observability tools (Grafana, Loki, Tempo). Requirements - Knowledge of PHP/Laravel or experience with other backend ecosystems; - Familiarity with AWS, Docker, Kubernetes, containerized deployments; - Experience with RNG, platform integrations, or the iGaming ecosystem. Benefits - 21 vacation days + 5 extra day-offs annually; - 12 paid sick days; - Fully remote format — work from anywhere you feel productive; - Flexible schedule: start your day anytime between 08:00–12:00 CET; - Fixed budget for health insurance and gym/fitness; - Provided all required work equipment; - Zero bureaucracy and direct communication with founders and C-level; - Minimal meetings, async-friendly workflow; - Startup energy: fast motion, creativity, and tight-knit communication; - Business trips and team meetups several times per year; - Multiple salary payout options (flexible formats); - …And many more perks unlocked after we hit break-even.

• Develop and maintain full-stack applications using .NET Core / ASP.NET and Angular • Build responsive, high-performance UI components and RESTful APIs • Design and deploy cloud-based applications on AWS • Collaborate with cross-functional teams to deliver scalable solutions • Optimize application performance, security, and reliability • Participate in code reviews, testing, debugging, and CI/CD processes • Work in Agile/Scrum development environments

Title: Senior Fullstack Engineer (Backend Focus) Location: New York, NY Department: Proxima Job Description: Proxima is the Conversion Intelligence platform for ecommerce. Powered by a proprietary Commerce Graph spanning 73M+ buyers across 2,000+ ecommerce brands, we help teams understand what actually drives conversion across the broader market, and turn those signals into clear creative direction. Our data is deterministic (real names, emails, and addresses from actual orders, not inferred from sessions), granular (full SKU-level receipt data), and point-in-time (timestamped history that enables recency scoring and ML without look-ahead bias). Headquartered in New York City, we're a team of operators, builders, and ecommerce veterans solving the hardest problems in modern customer acquisition. About the Role We're looking for a Senior Full Stack Engineer to help build the AI-driven products at the core of our platform. You'll work directly with our proprietary dataset — real-time, anonymized cross-brand transaction data — to build the services, agents, and tools that power Conversion Intelligence. This is a full stack role with a center of gravity in the backend. The majority of your work will be backend services, data systems, AI orchestration, and APIs — but you'll also own the UIs that surface this work to users, so you should be genuinely comfortable across the stack. If you thrive in fast-moving environments and are energized by pushing the limits of AI-assisted development, we'd love to talk. What You'll Own - Design, build, and document backend services and APIs that power our AI-driven products - Develop end-to-end features across AI agent interfaces, orchestration layers, and developer-facing tools - Query, model, and manage relational databases — own the data layer, not just consume it - Build and scale the systems that turn cross-brand transaction data into product - Ship responsive, clean UIs in TypeScript and React where the product needs them - Own projects from architecture to deployment in an agile, high-velocity environment - Collaborate cross-functionally to ship high-impact features quickly - Stay current on modern AI development practices and tooling Qualifications - 6+ years of professional software development experience - Strong backend proficiency in TypeScript, with solid working knowledge of SQL and relational database design - Demonstrated experience building or integrating AI-powered applications — agents, orchestration, or LLM-backed systems - Proven track record in startup environments — you've shipped fast and worn multiple hats - Comfortable owning projects independently in high-velocity environments - Working proficiency in React and the ability to build production UIs when the work calls for it - Daily use of AI-assisted coding tools (Cursor, GitHub Copilot, Claude Code, etc.) — this is a requirement, not a nice-to-have - Bachelor's degree or higher in Computer Science, Engineering, or a related field Nice to Have - Proficiency in Python - Experience with AI agent frameworks, orchestration tools, or embeddings - Background in data engineering (ETL, dbt, Airflow, etc.) - Familiarity with cloud platforms (AWS, GCP, Azure) and containerization (Docker, Kubernetes) - Experience writing production-grade CSS/SCSS Location Open to remote candidates based in the U.S. or hybrid candidates in New York City, with a preference for NYC. Work Authorization: Must be authorized to work in the U.S. without sponsorship. Visa transfers may be considered on a case-by-case basis. Why Proxima - Work on one of the most differentiated data assets in consumer tech - High ownership and accountability — drive projects end-to-end and make decisions that actually matter - Lean team where your contributions are visible and your voice carries weight - Highly cross-functional — work closely with product, data, growth, and leadership - Hybrid setup in our NYC office with a collaborative in-person culture, plus quarterly team events in and out of the office Benefits & Perks - Competitive base salary and meaningful equity - Comprehensive medical, dental, and vision coverage - HSA and FSA options - 401(k) - 12 weeks of fully paid parental leave - Unlimited PTO - Summer Fridays from July 4th through Labor Day - Mental health and wellness support through Talkspace, Health Advocate, and One Medical - Commuter benefits - $1,000 annual learning & development stipend - Quarterly team events, both in and out of the office