Back End Developer

Pharmatek Solutions Inc. · India

Hiring Backend Developer — Klarixa AI  

Company : Klarixa Private Limited ( a subsidiary of Pharma Tek Solutions, USA)

Experience: 4–8 Years

Employment Type : Full-Time (In-Office)

Location : BHIVE Workspace – HSR Campus, Hosapalaya, Bangalore (In-Office)

Compensation : Competitive salary + meaningful equity from Day 0

Important — Please apply only if your experience aligns with these core requirements.

This is a Python-first Backend Developer role. Strong hands-on production experience with Python and FastAPI is mandatory.

Candidates must have hands-on experience with:

• Python
• FastAPI
• REST APIs
• PostgreSQL
• Microservices & Backend Architecture
• System Design & Distributed Systems
• AWS — EC2, ALB, S3, Route 53
• Docker
• CI/CD
• AI/LLM experience.
• Async / Event-Driven Systems
• Production Deployment & Monitoring

Product/SaaS company experience is preferred , particularly candidates from product-led companies, SaaS companies, or high-growth startups who have built and scaled production systems.

Education / Company Background

• Preferred Qualification: Bachelor's or Master's degree from a reputed engineering institute such as IITs, NITs, or BITS Pilani.
• OR prior experience at a reputed product company , high-growth startup, or leading technology organization.

What We’re Looking For

• 4–8 years of hands-on backend engineering experience building and shipping production-grade systems — not academic projects or toy applications.
• Strong production experience with Python backend development , including hands-on experience building APIs/services using FastAPI, Django, Flask, or equivalent Python backend frameworks .
• Backend architecture skills are essential , with hands-on experience designing scalable systems, microservices, distributed systems, APIs, databases, caching, and performance optimization.
• Hands-on experience with AI/LLM technologies , including LLM APIs, RAG, AI agents, MCP, semantic search, or AI-powered backend workflows .
• Hands-on experience with PostgreSQL including schema design, query optimization, indexing, and performance considerations.
• Strong experience building and maintaining RESTful APIs and familiarity with WebSockets or real-time communication.
• Hands-on experience with Docker, CI/CD, and production deployments .
• Practical experience with AWS , particularly EC2, ALB, S3, and Route 53 .
• Strong CS fundamentals , including data structures, algorithms, databases, networking, operating systems, and performance optimization.
• Experience owning backend features end-to-end — from technical design and implementation to deployment, monitoring, debugging, and production support .
• Comfortable working in a fast-paced startup environment with ambiguity, high ownership, and minimal supervision .

The Role 

We're hiring a Backend Developer who wants to build the core systems behind a category-defining AI product — not maintain someone else's legacy stack. 

You'll work directly with the founding team in a lean pod structure: small, high-trust, multi-disciplinary teams that own outcomes end-to-end. No layers of approval, no waiting for a Jira ticket to thaw. You ship, you measure, you iterate. 

This is an AI-native engineering org. We expect every engineer to be fluent with modern AI dev tooling — Claude Code, Cursor, agentic workflows, LLM-in-the-loop systems — not as a novelty but as the default way we build.

What You'll Do 

• Design, build, and scale backend systems and microservices that sit at the core of our platform 
• Write clean, well-documented Python that other engineers (and AI agents) can extend 
• Build and optimize RESTful APIs and WebSocket services for real-time, high-performance workflows 
• Own our Postgres data layer — schema design, query optimization, scaling decisions 
• Deploy and maintain containerized services using Docker 
• Work extensively with AWS (EC2, ALB, S3, Route 53) and own pieces of our cloud infrastructure 
• Build and harden CI/CD pipelines so we can ship multiple times a day with confidence 
• Pair closely with frontend engineers, PMs, and founders on architecture, product, and go-to-market decisions 
• Take full ownership of features — from spec ambiguity to production telemetry — and bring strong opinions about what we should build next 

What We Value  

• AI-native by default. You use Claude Code, Cursor, or similar agentic tooling as a force multiplier — and you have opinions about how to do it well. 
• Lean-pod operator. You thrive in small teams where you wear multiple hats and the distance from idea to production is hours, not weeks. 
• Product brain. You care about why we're building something, not just what . You'll push back on bad specs. 
• Calm in chaos. Startup velocity is the floor, not the ceiling. You stay sharp when priorities shift. 
• Craft. You ship fast, but you don't ship sloppy. 

Why Klarixa  

• Day-0 equity. Real ownership from the moment you join. We want you invested in the outcome — not just employed by it. 
• Founder access. No middle layers. You'll be in the room where architecture, product, and strategy decisions are made. 
• Top 1% ambition. We're not building a feature shop. We're building a category leader, and we hire people who want to be part of that bar. 
• Founders who've done it. A mix of core AI/SaaS builders and life sciences operators who've lived the problems we're solving for 20+ years. 
• Tooling and autonomy. Best-in-class dev environments, AI tooling budget, and the trust to use them. 
• Real impact. Pharma, biotech, and medical device companies will use what you ship to keep medicines safe and audits clean. The work matters. 

Big Pluses  

• Prior experience at a product-led startup or high-growth SaaS company 
• Daily user of Claude Code, Cursor, or comparable AI dev tools — bonus if you can show what you've built with them 
• Exposure to regulated industries (pharma, healthcare, fintech) or workflow-heavy enterprise SaaS 
• Open-source contributions or side projects that show range