Senior Full-Stack Engineer — Distributed / Event-Driven Platform Lead

Senior Full-Stack Engineer — Distributed / Event-Driven Platform Lead (Clinic · Pharmacy · Core Services)

Remote (India) · Full-time · 3 openings

₹15–25 LPA (DOE)

Stack: NodeJS · NestJS · React · TypeScript

Keywords: distributed systems · event-driven · high-throughput · real-time · microservices · concurrency · idempotency · observability · reliability

Why Script Assist — and why now

We’re building the real-time operating system for next-gen private healthcare. Script Assist already powers a major share of the UK medical-cannabis market and is expanding fast into GLP-1s, TRT, ADHD, and other precision-care verticals.

Our infrastructure processes tens of thousands of concurrent clinical and pharmacy events every month, growing 10–20 % month-on-month.

Join a product-obsessed engineering team where you’ll own an entire domain end-to-end and still write a ton of code. Leadership without slides — real scope, real decisions, real users.

The domains

• Clinic Lead – eligibility, onboarding, scheduling, consent, RBAC, audit trails

• Pharmacy Lead – prescribing, dispensing, inventory / batch / expiry logic, reconciliation, reporting

• Core / Cross-Cutting Lead – payments, idempotent order flows, distributed event processing, retries / queues, reconciliation pipelines, observability, developer tooling

Each domain functions as a stateful, event-driven mesh — demanding precision, concurrency control, and reliability at scale.

What you’ll lead and build

Ownership (30–50 %)

• Own architecture, delivery, and reliability for your domain

• Lead 4–6 engineers — hiring, mentoring, raising quality

• Drive RFCs, ADRs, PR standards, post-mortems

• Partner with Product, Compliance, and SME teams to ship fast and safely

Hands-on coding (50–70 %)

• Build modular, testable NestJS services (DI, guards, interceptors, providers)

• Design idempotent REST APIs with JWT / OAuth2, RBAC, rate-limiting, retries, circuit breakers

• Implement state-safe workflows, distributed locks, saga / outbox patterns, and message queues (Kafka / RabbitMQ / Redis)

• Ship end-to-end React + TypeScript features with strong state management and performance tuning

• Maintain observability pipelines (metrics, logs, traces) and OWASP-grade security

• Optimise throughput, consistency, and recovery semantics across distributed components

Must-haves

• NodeJS

• TypeScript

• React

• NestJS (providers, modules, guards, interceptors)

• Proven experience in high-throughput, event-driven, or distributed systems (payments, logistics, marketplace, healthcare, etc.)

• Clear English, decisive ownership, uncompromising technical standards

• Notice < 30 days preferred (we can buy out up to 60 for the right hire)

Nice-to-haves

• Deep understanding of distributed-systems primitives: idempotency, concurrency, consensus, partition tolerance, reconciliation

• Experience with CQRS / event sourcing and message brokers (Kafka, RabbitMQ, NATS, Redis Streams)

• Familiarity with domain-driven design (DDD) and microservice resilience patterns

• Experience in regulated or mission-critical domains (healthtech, fintech, logistics)