FitTrack
Track your workouts, log sets and reps, monitor personal records, and hit your weekly fitness goals.
Dev Kumar
Product Engineer | AI-First | MERN · LLM Integration · RAG | Open to Global Roles
Delhi, IndiaFintech and SaaS
10roles
31skills
2education
About
I build software that ships — and lately, software that thinks. I'm a product engineer with 3+ years of experience owning features end-to-end — from API design and database modeling to React interfaces, mobile integrations, and AI-powered functionality. Some things I've built: — An AI customer support chatbot using RAG architecture (TF-IDF retrieval + Claude API), trained on 1,900+ real conversations, deployed in production — A real-time event pipeline using Segment webhooks with downstream analytics and CRM sync — Mobile attribution integration across iOS and Android — A referral program and milestone reward system, designed and shipped end-to-end — A user database cleanup pipeline processing 70K+ profiles for targeting accuracy I like working at the intersection of product, data, and AI — where engineering decisions have direct user impact. I'm comfortable picking up ambiguous problems, scoping them, and seeing them through to deployment. Currently exploring global and remote opportunities, with a specific interest in Japan. Actively preparing for JLPT N5 and open to relocation with visa sponsorship.
Experience
Software Engineer
GetBit.in
1 yr 3 mos
● Engineered scalable full-stack features for a cross-border remittance platform processing USA → India transfers, integrating payment gateways and compliance workflows. ● Built and secured REST APIs for real-time transaction processing and internal operational dashboards, ensuring data integrity across financial flows. ● Contributed to microservices architecture supporting high-availability, fault-tolerant financial workflows under production load. ● Reduced API response times by implementing Redis caching and targeted query optimization across critical transaction endpoints. ● Implemented structured logging and monitoring pipelines, cutting mean time to incident resolution and improving system observability.
SDE
FLot
5 mos · Delhi, India
• Developing and maintaining scalable, secure web applications to enhance user experience in the fintech industry. • Collaborating with cross-functional teams to deliver robust front-end and back-end solutions. • Implementing best practices in coding, testing, and deployment to ensure high performance and reliability. • Contributing to the continuous improvement of our tech stack, keeping pace with emerging technologies and fintech trends. • Focusing on delivering impactful and innovative solutions that drive financial accessibility and efficiency.
Professional development
Career Break
6 mos
• Took a professional break from April 2024 to October 2024 to focus on skill enhancement and personal development. • Dedicated time to improving technical expertise, specifically in data structures, algorithms, and full-stack development. • Solved over 300 problems on LeetCode, strengthening coding and problem-solving skills. • Engaged in side projects to apply and enhance my skills in real-world scenarios. • Stayed updated with industry trends to remain competitive and adaptable for future roles.
Trainee Software Engineer
HestaBit
1 yr 9 mos · Noida, Uttar Pradesh, India
• Contributed to full-stack development using the MERN stack (MongoDB, Express.js, React.js, Node.js), Next.js, and Gatsby.js to build highly scalable applications, resulting in a 20% increase in project efficiency and reduced timelines for feature rollouts by 15%. • Collaborated with cross-functional teams, including designers, product managers, and backend developers, to identify and solve 50+ complex technical challenges, leading to a 30% boost in overall team productivity and efficiency. • Worked directly with 5+ clients, gathering business requirements, providing technical solutions, and incorporating iterative feedback into the product development process, increasing client satisfaction by 25%.
Intern Fullstack Developer
Code Planet
9 mos · Jaipur, Rajasthan, India
• Proficient in core Python and Data Structures & Algorithms (DSA) - Achieved a 30% increase in code efficiency - Reduced debugging time by 20% • Hands-on experience with RDBMS using MySQL - Performed complex operations effectively - Managed databases with over 10,000 records
SDE-I (Full Stack Engineer)
Getbit / Crobo
Mar 2025 – Present · Remote
Engineered scalable full-stack features for a cross-border remittance platform processing USA-to-India transfers; built and secured REST APIs for real-time transaction processing and operational dashboards; contributed to high-availability microservices; reduced API response times with Redis caching and query optimization; implemented structured logging and monitoring pipelines.
Full Stack Engineer (SDE-I)
Flot Pvt. Ltd
Nov 2024 – Mar 2025 · Delhi
Engineered lending platform modules with business-rule validation and compliance alignment; built operational dashboards used by 15–20 team members; integrated RESTful APIs with React frontends; collaborated with QA and product teams in agile sprints.
Self-directed learner
Independent Learning & Skill Development
Apr 2024 – Nov 2024 · Self-directed
Solved 300+ LeetCode problems and deepened expertise in data structures and algorithms, system design, TypeScript, and distributed systems architecture; built personal projects exploring microservices, Redis caching, and full-stack API optimization.
Trainee Software Developer (Full Time)
Hestabit Technologies Pvt. Ltd.
Aug 2022 – Apr 2024 · Noida
Delivered client projects end-to-end using the MERN stack and Next.js; built a customer-facing chatbot serving 5,000+ users; diagnosed and resolved 50+ production bugs.
Software Intern
Code Planet Technologies Pvt. Ltd.
Nov 2021 – Jul 2022 · Remote
Optimized Python automation scripts, improving execution efficiency by 30%; managed and optimized MySQL databases with 10,000+ records and wrote efficient queries for reporting and data pipelines.
Education
Rajdhani College, University of Delhi
Bachelor of Arts, Hindi Language and Literature
Rajdhani College, University of Delhi
Bachelor of Arts, Hindi + Political Science
2019 – 2022
Skills
Node.jsReact.jsExpress.jsAnthropic ClaudeProduct EngineeringJavaScript (ES6+)TypeScriptPythonNext.jsRESTful APIsMicroservices ArchitectureAPI DesignError HandlingPostgreSQLMongoDBMySQLRedisCursor AIClaude (Cowork)OpenClawGitGitHubPull RequestsCode ReviewsVS CodeScalable SystemsDistributed SystemsAuthenticationData IntegrityAgileProduction Debugging