Hari Om Bhardwaj
I build robust backend systems and ML applications. My expertise includes developing high-performance microservices, messaging systems, and custom machine learning solutions using modern technologies. I'm passionate about open-source contributions and creating efficient, scalable software solutions.
ABOUT ME
CODING ROBUST SYSTEMS
I'm a full-stack developer and ML engineer specializing in high-performance backend systems, microservices, and machine learning applications. With expertise in Go, Python, and JavaScript, I focus on creating efficient, scalable solutions for complex problems.
My experience spans developing message brokers, session management libraries, and ML-powered systems. I'm passionate about open-source contributions and continuously learning new technologies to enhance my development capabilities.
Backend Development
Building robust microservices, APIs, and server-side applications with modern frameworks and architectures.
Database Engineering
Designing efficient database schemas, optimizing queries, and implementing data persistence layers.
Machine Learning
Developing and deploying ML models for classification, recognition, and prediction tasks.
PROFESSIONAL JOURNEY
EXPERIENCE
A detailed look at my work experience and key contributions across different roles.
BugOwl AI
Backend Developer
Sep 2025 - Present
BugOwl AI is a Mumbai-based startup focused on AI-powered content creation. Working remotely as a backend developer building scalable audio and AI pipelines using FastAPI, React Native, GCP, Supabase, Vertex AI, Firebase, and FFmpeg.
→Key Contributions
- Optimized text-to-speech pipeline by migrating from short-form to long-form audio generation using SSML, reducing API calls from 30–40 to 2–3 per script and lowering CPU utilization during audio stitching with FFmpeg.
- Introduced an in-memory LIFO caching mechanism for signed URL retrieval from GCP bucket, improving response times by 10x (from 10s to 2–3s) for script assets after initial load.
- Integrated Vertex AI and Gemini to auto-generate AI-based poster images and enhance voice synthesis with enriched dialogue and scene context for lifelike voice generation.
- Implemented Dodo payment gateway and developed a subscription-based model, enabling seamless in-app purchases and recurring revenue management.
RestoTag
Backend Developer (Freelance)
June 2025 - September 2025
RestoTag is a restaurant management platform based in Ahmedabad, Gujarat. Engaged as a freelance backend developer to re-architect and scale the backend infrastructure using FastAPI, Django, AWS (EKS, ECS), Docker, PostgreSQL, and CI/CD pipelines.
→Key Contributions
- Re-architected the backend by migrating from Django (MVP) to FastAPI, building a scalable restaurant management platform featuring QR-based table booking, live menu updates, and real-time order tracking.
- Implemented a multi-level role-based access system for owners, managers, chefs, and staff to streamline workflows and order processing.
- Automated containerized deployments with Docker and CI/CD pipelines on AWS (EKS/ECS), ensuring reliable, low-downtime production releases.
- Resolved critical real-time synchronization issues using Redis PUB/SUB, TCP, websockets to maintain consistent communication between staff and kitchen teams.
- Collaborated with early restaurant clients to onboard systems, troubleshoot backend workflows, and optimize initial production performance.
Detour Berlin
Backend Developer (Freelance)
Jan 2025 - Mar 2025
Detour Berlin is a Germany-based fashion tech startup launching a luxury, membership-based clothing brand. Engaged as a freelance backend developer to build scalable backend infrastructure using FastAPI, Redis, Docker, AWS, PostgreSQL, and CI/CD pipelines.
→Key Contributions
- Developed a modular FastAPI backend for a luxury e-commerce platform with secure token-based authentication, role-based access control, and well-structured APIs for scalability.
- Automated CI/CD pipelines with Dockerized AWS deployments to ensure reliable releases and minimal downtime.
- Integrated Redis caching and asynchronous job queues to handle flash sales and heavy user loads, reducing API latency and improving scalability.
- Implemented object storage for product thumbnails and server-side image preloading, significantly enhancing response times and user experience during peak traffic.
- Built a real-time analytics pipeline that tagged products and tracked their cart additions, tag co-occurrence patterns, and purchase frequency.
- Processed data to train a Random Forest model that predicted high-conversion tags, enabling the business team to identify and procure products with the greatest sales potential.
Gradio
Open Source Contributor
Jan 2023 - Jul 2023
Enhanced open-source Gradio library by implementing streamlined workflows, consolidating tickets, and resolving assert vulnerability issues.
→Key Contributions
- Implemented streamlined workflows for UI component development
- Consolidated and resolved backlog tickets to improve code quality
- Fixed assert vulnerability issues in multiple components
- Improved code maintainability by developing custom Error classes aligned with project requirements
- Participated in code reviews and provided feedback to other contributors
- Documented API changes and features in the official documentation
VALUE PROPOSITION
WHY CHOOSE ME
I don't just build software—I solve business problems through technology, creating custom solutions that drive real, measurable value.
Problem Solver
Turning complex business challenges into elegant, efficient solutions through strategic problem analysis and innovative thinking.
- Analytical approach to complex issues
- Creative solution architecture
- Root cause identification
- Efficiency-focused resolutions
- Proactive problem anticipation
Technical Innovator
Leveraging cutting-edge technologies to create future-proof solutions that keep your business ahead of the competition.
- Modern tech stack mastery
- Custom architecture design
- Performance optimization
- Scalable system development
- Integration expertise
Strategic Partner
Working alongside your team as more than just a developer—a strategic ally invested in your long-term business success.
- Business goal alignment
- Long-term vision planning
- Collaborative approach
- Industry expertise
- Continuous improvement focus
Results Driver
Focused on delivering measurable outcomes that directly impact your bottom line and accelerate business growth.
- ROI-focused development
- Metric-driven solutions
- Impactful deliverables
- Data-informed decisions
- Business value prioritization
MY WORK
FEATURED PROJECTS
A selection of my recent work in backend systems, microservices, and machine learning
ROOM - Messaging Backend
Solo DevBuilt a containerized FastAPI-based real-time messaging backend supporting secure room-based communication via WebSockets and Redis PUB/SUB. Implemented JWT authentication with Auth0, end-to-end encryption using Signal Protocol (Diffie–Hellman, ECC), and Protocol Buffers for efficient data serialization. Designed an asynchronous architecture enabling high concurrency, low latency, and scalable performance under heavy loads.
Draftle - AI Email Reply Agent
Solo DevDeveloped an AI-powered full-stack email assistant that generates personalized Gmail replies by learning each user's tone, phrasing, and writing style. Designed a persona synthesis pipeline using questionnaire data and real email threads, creating structured JSON profiles refined via Vertex AI Gemini. Integrated Gmail OAuth for thread syncing, caching, and contextual drafting while deploying a scalable backend on GCP Cloud Run with Redis and Prisma ORM.
Kratos - Session Management Library
Solo DevA comprehensive microservice session authentication and management library for Go. Implements OAuth 2.0, cookie-based sessions, JWT authentication, and supports gRPC with WebSockets for real-time, low-latency service communication.
Yogi's EYE
Team LeadML-powered Ayurvedic plant recognition system using EfficientNet architecture. Implemented custom training on Robflow-processed dataset, improving accuracy for diverse species recognition. Deployed in Docker with PostgreSQL database.
TECHNICAL EXPERTISE
MY STACK
Modern technologies I leverage to build robust and scalable applications
My academic background in Computer Science and Data Science