Hi,I'mHari OmBhardwaj
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.
Detour Berlin
Freelance Backend Developer
Nov 2023 – Feb 2024
Detour Berlin is a Germany-based fashion tech startup launching a luxury, membership-based clothing brand. I was engaged as a freelance backend developer to help translate business concepts into scalable backend infrastructure and advise on the technical feasibility of various product and feature ideas.
→Key Contributions
- Designed and implemented the backend architecture for a membership-driven e-commerce platform using FastAPI and Next.js.
- Developed secure authentication and authorization flows for the membership API, ensuring seamless and safe user access.
- Built a business insights dashboard to track member and customer analytics for strategic decision-making.
- Integrated object storage solutions to optimize image rendering during limited-time clothing drops.
- Implemented server-side caching to reduce latency and ensure high performance during exclusive product releases.
- Set up data tracking pipelines for historical drop analysis to inform future product development and marketing strategies.
- Established CI/CD pipelines for internal APIs to enable reliable and scalable future development.
- Managed deployment through Vercel, optimizing frontend/backend synergy.
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 DevA high-performance messaging backend with E2E encryption, Auth0, and protobuf security. Features optimized real-time messaging via WebSockets, Redis PUB/SUB, and async architecture for improved performance.
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