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Vishal Birajdar

@vishalb6397

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India

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What I'm looking for

I seek backend engineering roles solving performance-critical problems, leading cross-language integration, and applying ML/RLHF in a collaborative, security-focused team with opportunities for technical growth.

Experienced and detail-oriented Senior Backend Developer with 7+ years of hands-on experience in Python, C++, and C# development, backend engineering, and AI/ML integration. Skilled at refactoring legacy code, optimizing performance, and building secure, scalable backend systems across startups and enterprise projects.

I specialize in:
- Backend architecture & API development (Python, C++, C#)
- Code review, optimization & debugging
- AI/ML integration with RLHF pipelines
- Cross-language system design & performance tuning
- Technical documentation & remote collaboration

My experience spans Toptal, NextLogic, Alpaca, and TCS, where I contributed to projects ranging from LLM optimization and AI model refinement to enterprise-grade backend platforms. Alongside my professional work, I’ve built tools like an AI Code Review Assistant and a Legacy Code Refactoring Dashboard to streamline development workflows.

🎓 Completed a Postgraduate Program in Artificial Intelligence & Machine Learning (IIIT Nagpur) to strengthen my expertise in AI-driven solutions.

🚀 Passionate about clean code, scalable architectures, and impactful engineering solutions.

Experience

Work history, roles, and key accomplishments

Current

Remote Software Engineer

Current

Toptal

Apr 2024 - Present (1 year 4 months)

Contribute to RLHF pipelines and evaluate AI-generated Python code, refactoring and optimizing outputs to improve correctness, efficiency, and maintainability for model fine-tuning.

Python Code Review Performance Optimization Documentation Model Fine Tuning

Software Engineer

NextLogic Technologies

Apr 2023 - Apr 2024 (1 year)

Designed and developed production-ready backend services integrating C/C++ modules with Python, refactoring legacy code to improve execution speed by up to 20% while ensuring memory safety and C17 compliance.

C#Python Performance Optimization Memory Management API Design Code Review

Software Engineer

Alpaca

May 2020 - Mar 2023 (2 years 10 months)

Built scalable backend systems and enterprise APIs in C#, C, and Python, integrating native libraries and concurrency features to reduce application latency by 25%.

C#Python ASP.NET Core gRPC REST APIs Concurrency Performance Profiling Automated Testing

Junior Python Developer

Tata Consultancy Services

Jan 2018 - Jan 2020 (2 years)

Supported development and QA of enterprise Python backend systems, improving test coverage and accelerating bug resolution through unit and integration testing and documentation.

Python Unit Testing Integration Testing Debugging Documentation