# Charan R.

> Senior Software Engineer | AI & Full-Stack Specialist

Location: Greater Boston, United States
Profile: https://flows.cv/charan

Lead Software Engineer with 10+ years of experience architecting scalable, cloud-native solutions that drive business growth and operational efficiency. 
My Expertise:
AI & RAG Expertise:
• Designed and implemented Retrieval-Augmented Generation (RAG) systems and end-to-end RAG pipelines for improved LLM accuracy and context-aware responses
• Specialized in prompt engineering, chain-of-thought prompting, few-shot learning, and fine-tuning prompts to optimize model performance
• AI Training & Annotation — evaluated LLM outputs, performed advanced data labeling, reasoning annotation, and quality feedback to enhance large language models
• Passionate about integrating AI (RAG, prompt engineering, LLM evaluation) into user-centric applications
Cloud-Native Architecture: Designed microservices-based systems that reduced downtime by 30% and cut operational costs by 35%
High-Performance Systems: Built distributed systems supporting 1M+ concurrent users with 99.9% uptime
Technical Leadership: Led cross-functional teams of 10+ engineers, mentoring talent and fostering cultures of continuous improvement
DevOps & CI/CD: Accelerated release cycles by 50% through strategic implementation of Jenkins and Docker pipelines

What Drives Me:
I'm passionate about transforming complex technical challenges into elegant, scalable solutions. Whether it's optimizing database performance by 60% or migrating legacy systems to modern frameworks, I thrive on delivering measurable impact that aligns with business objectives.
Technical Arsenal:
☁️ Cloud & DevOps: AWS (S3, CloudFront), Docker, Jenkins, CI/CD
💻 Backend: Java, Node.js, Spring Boot, SQL
🎨 Frontend: React, React Native, JavaScript (ES6+), HTML5, CSS3, Tailwind CSS
📊 Databases: PostgreSQL, DynamoDB
🛠️ Methodologies: Agile, Microservices Architecture
Currently seeking opportunities to leverage my expertise in cloud architecture, system design, and technical leadership to drive innovation and deliver exceptional results.

## Work Experience
### Full Stack Developer @ TSQ S
Jan 2026 – Present | Dallas, Texas, United States

### Lead Software Engineer @ HCLTech
Jan 2022 – Jan 2024 | India
I design intelligent, cloud-native solutions that integrate advanced AI capabilities (RAG pipelines, prompt engineering, LLM evaluation) with robust front-end and backend systems to deliver measurable business impact.

• Architected Retrieval-Augmented Generation (RAG) systems and end-to-end RAG pipelines to enhance LLM accuracy, reduce hallucinations, and provide context-aware, high-quality responses
• Specialized in prompt engineering (chain-of-thought, few-shot, role-based prompting) and LLM fine-tuning workflows to optimize model performance for real-world applications
• Served as AI Training & Annotation Fellow at Handshake AI (Project Horizon) — evaluated LLM outputs, performed advanced data labeling, reasoning annotation, quality control, and iterative feedback to improve large language model capabilities
• Designed microservices-based architectures integrating AI components that reduced system downtime by 30% and improved deployment efficiency by 25%
• Led cross-functional teams of 10+ engineers in building cloud-native, AI-enhanced applications, achieving 40% scalability gains and 35% operational cost reduction ($500K+ annual savings)
• Spearheaded CI/CD pipelines (Jenkins, Docker) that accelerated release cycles by 50% while incorporating automated AI model testing and validation
• Mentored 5+ junior developers on AI best practices, prompt engineering, and RAG implementation, fostering continuous learning and team growth

### Senior Application Developer @ IBM
Jan 2019 – Jan 2023 | Greater Bengaluru Area
Engineered high-availability distributed systems and optimized database performance for enterprise-scale applications serving millions of users.
Key Achievements:

Designed and developed high-availability distributed system achieving 99.9% uptime and supporting 1M+ concurrent users, ensuring seamless user experience at scale
Optimized database queries and indexing strategies, reducing data retrieval times by 60% and dramatically improving overall application performance and user satisfaction
Led migration of legacy systems to modern frameworks (Spring Boot, React), reducing maintenance costs by 25% and improving system reliability by 40%
Mentored junior developers through code reviews and technical workshops, contributing to 20% improvement in team productivity and code quality
Partnered with product managers to translate business requirements into technical solutions, delivering 15+ features aligned with strategic objectives

### Software Associate @ Cognizant
Jan 2017 – Jan 2019 | Bengaluru, Karnataka, India
Developed scalable media-streaming applications with optimized cloud infrastructure, enhancing user engagement and retention.
Key Achievements:

Developed scalable media-streaming web application using React and Node.js, increasing user engagement by 25% through intuitive UI/UX and responsive design
Integrated AWS S3 and CloudFront for optimized content delivery, reducing load times by 40% during peak traffic and improving user satisfaction scores
Collaborated with cross-functional teams (design, backend, QA) to implement new features, resulting in 15% increase in user retention and positive user feedback
Implemented responsive design principles and performance optimization techniques, ensuring seamless experience across devices and browsers

### Associate Application Developer @ Thomson Reuters
Jan 2015 – Jan 2017 | Bangalore Urban, Karnataka, India
Built mobile-responsive websites and enhanced functionality through collaborative development practices.
Key Achievements:

Developed mobile-responsive versions of client websites using HTML5, CSS3, and JavaScript, improving cross-device user engagement and accessibility
Collaborated with designers and backend developers to enhance website functionality, achieving 20% increase in client satisfaction ratings
Implemented cross-browser compatibility solutions, ensuring consistent performance across Chrome, Firefox, Safari, and Edge
Participated in Agile development cycles, contributing to on-time delivery of 10+ client projects

### Project Associate @ Infosys
Jan 2012 – Jan 2015 | Bengaluru, Karnataka, India
Started career as software engineer, completed company training in full stack 
development, and built strong programming foundations that continue to inform my 
ServiceNow work today.

Key Contributions:

- Developed frontend and backend components using JavaScript, jQuery, Node.js

- Worked with both SQL and NoSQL databases, learning data modeling and query 
  optimization

- Built RESTful APIs and third-party integrations, learning API design principles

- Participated in code reviews and received mentorship establishing best practices 
  for code quality

Strong 3.5-year tenure building career foundation. Left to pursue more advanced  Java, React 
and modern JavaScript opportunities.

Technologies: Java, SpringBoot, JavaScript, Node.js, MySQL, MongoDB, Express.js, REST APIs


## Education
### Master's degree in Computer Science
Clark University
Jan 2024 – Jan 2025

### Computer Application in Computer Science
Ramaiah Institute Of Technology


## Contact & Social
- LinkedIn: https://linkedin.com/in/cvcharanraj

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Source: https://flows.cv/charan
JSON Resume: https://flows.cv/charan/resume.json
Last updated: 2026-03-22