Subhojit Das

Software Developer with experience in building scalable, secure, and high-performance web applications using the MERN stack, SQL databases, and cloud platforms. Skilled in designing RESTful APIs, implementing secure authentication mechanisms, and optimizing backend performance. Strong in translating functional requirements into efficient technical solutions while maintaining clean, maintainable, and production-ready code aligned with modern software engineering standards.

Social Media Ad Relevance Strategist & Analyst at Appen (2025-03 – 2026-01)

Project for Meta - Evaluated and analyzed social media advertisements for quality and relevance

• Improved ad targeting precision by evaluating 2,000+ social media advertisements, analyzing content quality, contextual relevance, and user intent across diverse demographics
• Maintained 90%+ accuracy in ad evaluation tasks, directly contributing to machine learning model training for better ad delivery and audience alignment

AI Quality Analyst at Soul.AI (2025-08 – 2025-12)

Project for Google Gemini - Reviewed and refined AI-generated responses for quality and accuracy

• Reviewed and refined 1000+ AI-generated responses to improve contextual accuracy and alignment with defined evaluation rubrics and user intent
• Conducted structured error analysis to identify recurring failure patterns, logical inconsistencies, and edge cases, contributing to overall model performance enhancement
• Applied standardized quality benchmarks to ensure consistency, clarity, and factual reliability across outputs
• Collaborated with cross-review and technical teams to streamline evaluation workflows and uphold annotation quality standards

AI / Machine Translated Output Analyst at Appen (2025-08 – 2025-01)

Reviewed and refined machine-translated and AI-generated records for quality assurance

• Reviewed and refined 1,000+ machine-translated and AI-generated records, achieving 90%+ quality accuracy by applying structured evaluation frameworks, performing semantic validation, and identifying contextual inconsistencies to improve overall model reliability
• Translated complex guidelines into actionable review processes and collaborated with cross-functional technical teams to streamline evaluation cycles, reduce recurring errors, and maintain 90%+ precision under defined productivity benchmarks

Full Stack Developer Intern at Zidio Development (2025-03 – 2025-05)

Developed full-stack web applications using MERN stack

• Boosted front-end performance by 20% through modular, responsive design using MERN stack
• Reduced backend query time by 15% and data flow for real-time app performance

SOC Intern at IntelVerse Academy (2025-06 – 2025-09)

Industrial Training Program - Security Operations Center monitoring and analysis

• Monitored and analyzed alerts using SIEM (Wazuh), identifying phishing and malware patterns
• Triaged and escalated incidents, improving detection accuracy by 15% through IOC enrichment with CyberChef and Wireshark

B.Tech in Computer Science Engineering – University of Engineering and Management, Kolkata (2023)

Higher Secondary (WBCHSE) – Jodhpur Park Boys School, Kolkata (2020 – 2022)

Secondary (WBBSE) – Jodhpur Park Boys School, Kolkata (2020)