Principal Full Stack Developer

SalesTeq, the software division of Hussain Industries Group based in Atlanta, is looking for a Principal Full Stack Developer to join their remote team. This senior leadership role involves shaping the architecture of an expanding AI-driven product suite that serves the US healthcare, staffing, and legal sectors. The successful candidate will lead system design, set the technical direction for microservices and AI-agent infrastructure, and mentor engineers as the company grows from early-stage products into a mature platform business. Collaboration with Solutions Architects and leadership teams will be essential to make foundational decisions on service architecture and deploy autonomous AI agents in production environments.

Key Responsibilities
- Architect and continuously evolve the microservice ecosystem, defining service boundaries, gRPC contracts, event-driven communication, and message broker design using RabbitMQ and Kafka.
- Own the end-to-end technical design for client-facing SaaS platforms, including React/Next.js frontends and Node.js/Nest.js and Python backend services.
- Design and implement production-grade Retrieval-Augmented Generation (RAG) pipelines and LLM-powered agent workflows using LangGraph, focusing on memory and context-window strategies.
- Lead integration of vector databases and NoSQL stores alongside existing PostgreSQL/MySQL infrastructure.
- Architect and enhance real-time communication (RTC) features and agentic workflow user interfaces such as dashboards, task monitors, and intake forms.
- Manage AWS infrastructure with a focus on balancing cost and performance across EC2, SQS, CloudFront, Lightsail, RDS, caching, Elastic IPs, and S3.
- Establish engineering standards for code quality, testing, and code review; mentor and support other engineers.
- Guide architectural decisions for CRM/EHR integrations, including Clio and eClinicalWorks.
- Drive CI/CD and deployment pipeline strategies across multiple products, including HV360, CureFlow AI, and the AgentStaQ suite.

Required Qualifications
- Over 10 years of full stack development experience, with significant time in technical lead, staff, or principal roles.
- Deep, hands-on expertise in React/Next.js and Node.js (Nest.js) and/or Python backend systems.
- Proven experience designing and operating microservice architectures with gRPC, event-driven design, and message brokers (RabbitMQ or Kafka) in production.
- Strong knowledge of SQL (PostgreSQL/MySQL) and NoSQL databases, including vector databases for AI and retrieval use cases.
- At least 2 years of experience building LLM-powered or agentic systems, including RAG pipelines, LangGraph or similar orchestration frameworks, and memory/context management.
- Solid experience managing AWS infrastructure components such as EC2, S3, RDS, SQS, CloudFront, and caching strategies, with an understanding of cost, scaling, and reliability tradeoffs.
- Experience with real-time communication (RTC) systems.
- Demonstrated technical leadership skills including architecture decision-making, mentoring, and code review at scale.
- Strong written English communication skills for asynchronous collaboration with US-based teams and clients.

Preferred Qualifications and Benefits
- Experience in healthcare or legal technology platforms is a plus.
- Competitive monthly compensation ranging from $2,500 to $3,500 USD (gross salary, taxes and fees additional), commensurate with skills and experience.
- Fully remote work opportunity, open to candidates based in Pakistan or South Asia.
- Direct mentorship from a Georgia Tech-trained Solutions Architect.
- Immediate hands-on exposure to production systems serving US clients.
- Annual performance-based salary reviews.

This position offers a unique opportunity to lead the technical evolution of innovative AI platforms within a dynamic and growing company while working remotely with a global team.