Mohammad Haris Rajput

Full Stack Technical Lead with 8+ years of experience designing and delivering enterprise-grade SaaS platforms, AI-driven applications, and real-time distributed systems. Skilled in backend architecture, cloud engineering, and building RAG-based solutions, with a proven ability to lead cross-functional teams across backend, frontend, mobile, and DevOps while owning end-to-end technical decisions and delivery quality.

Sr. Full Stack Developer | Tech Lead at Space-O Technologies (2020-03 – Present)

• Led architecture and delivery of enterprise-scale platforms, including multi-tenant SaaS systems, AI-driven applications, and real-time operational tools.
• Developed and deployed RAG-based AI systems using LangChain, Pinecone/pgVector, Weaviate, and OpenAI GPT, enabling document intelligence, contextual retrieval, and automated enterprise workflows.
• Improved backend performance by up to 60% through query optimization, caching strategies (Redis), and async processing pipelines across high-traffic APIs.
• Decreased AWS infrastructure costs by ~45% through compute right-sizing, containerization, and proactive resource monitoring.
• Constructed real-time communication layers using Socket.IO, enabling continuous device tracking, live updates, and high-frequency event streaming.
• Built and maintained CI/CD pipelines using Jenkins + Docker, achieving reliable, zero-downtime deployments across multiple environments.
• Strengthened cloud security using Cloudflare WAF, IAM hardening, DDoS protection, and secure routing for production workloads.
• Created prompt-engineering frameworks that improved AI accuracy, lowered hallucinations, and aligned outputs with business rules.
• Guided cross-functional engineering teams (backend, frontend, Android, iOS), driving architectural decisions, performance reviews, PR reviews, and production release cycles.

Sr. Software Engineer at Foremost Digital (2017-01 – 2020-02)

• Shipped 25+ production systems across diverse domains including CMS platforms, multi-tenant property systems, social media features, and real-time communication applications.
• Planned scalable backend architectures using MySQL, MongoDB, Redis, improving query performance and reducing bottlenecks across multiple applications.
• Built and maintained infrastructure on AWS (EC2, RDS, S3, CloudFront), optimizing performance and reducing operational costs.
• Implemented CI/CD workflows and automated deployment pipelines across environments for predictable and efficient releases.
• Managed teams of backend developers, mobile engineers, and designers — conducting code reviews, sprint planning, requirement breakdowns, and architecture discussions.
• Served as the primary client-facing technical lead, owning sprint demos, project planning, requirement discovery, and delivery timelines.
• Managed multiple parallel projects using Basecamp and Jira, ensuring consistent communication, prioritization, and execution across all engagements.
• Acted as the go-to engineer for production issues, system debugging, and database tuning across mission-critical applications.

Bachelor of Engineering in C.S. – SSIU - Swarnim Startup & Innovation University (2013 – 2017)