Job Title

Location: Delhi NCR / Bengaluru (onsite or hybrid) | Type: Full-time | Seniority: 2-5 yrs experience (or equivalent skill); Help us build the engine that fuels smarter, stronger athletes—every single day.About RefuelRefuel is a data-driven fitness & recovery platform for hybrid athletes (think CrossFit × Hyrox). We blend workout logging, wearable streams (Apple Watch, HRV, HR zones), and periodic biomarker testing to generate truly personalized training and recovery plans. We’re pre-seed, well-funded, and moving fast out of India for a global launch.As our first backend hire you’ll architect the systems that crunch millions of sensor datapoints into simple, actionable insights for athletes worldwide. You’ll work directly with the founders to make technical and product decisions that set the course for years to come.What you’ll ownSystem architecture & data pipelinesDesign scalable, event-driven services (workout ingestion, strain & recovery scoring, notification queues) from zero → production.APIs that feel magicalBuild and document secure REST/GraphQL endpoints consumed by our watchOS/iOS apps and partner integrations.Real-time & batch analyticsImplement time-series storage, stream processing, and model-scoring jobs that turn raw metrics into personalised recommendations in Infrastructure as codeSpin up secure, observable environments with Terraform/Pulumi, CI/CD, automated testing, and on-call runbooks.Data privacy & complianceBake HIPAA-/GDPR-grade encryption, audit logs, and consent management into every layer.Technical cultureEstablish code standards, mentorship rituals, and a “measure-twice-ship-once” mindset for all future engineers.You might be our person if you…Have 2+ years building production systems in Go, Node, Rust or Python (we’re language-agnostic; we care about craft).Designed, monitored, and scaled services on AWS, GCP or Azure (EKS/Fargate, Pub/Sub, Lambda, etc.).Love PostgreSQL (and maybe TimescaleDB), know when to reach for Redis, and can model data you actually want to query.Are fluent in event-driven patterns—Kafka, Kinesis, or equivalent.Ship high-quality code with unit/integration tests, code reviews, CI pipelines, and meaningful metrics.Can translate fuzzy product requirements into elegant technical specs—and push back when something won’t scale.Communicate crisply with designers, iOS engineers, marketers, and (sometimes) investors.Bonus pointsExperience handling wearable / IoT data, sports-science, or digital health products.Familiarity with machine-learning ops (feature stores, model versioning, on-device inference).Prior founding-engineer or early-startup experience; you’re comfortable owning massive scope.Passion for CrossFit, Hyrox, strength-training or just getting that last pull-up in.Why Refuel?Ownership: Meaningful equity plus the keys to the entire backend stack.Greenfield: No legacy code—build it right from day 1.Impact: Your work directly influences how thousands (soon millions) train and recover.Resources: Backed by experienced product leaders and early capital; you’ll have the tools you need.Growth: Conferences, courses, and coaching budgets—because your progress matters too.