App LogoApp name
SK

Sagar Kumar

Open to work1 years experience

Founding Developer

Greater Noida, Uttar PradeshTarget Roles: Backend Engineer • Full-Stack Developer • Frontend Specialist

Founding Developer and AI/ML Researcher.

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Standing Rank

Rank Not Available

Developer Badges

Badges Pending

Skills & Technologies

28 skills
pythonc++javasqlsupervised learningunsupervised learningdeep learningoptimization algorithmsneural networksmodel evaluationattention mechanismstensorflowkeraspytorchscikit-learnnumpypandasmatplotlibseaborndata structures & algorithmslinear algebraprobability & statisticscalculuscomputational complexitygitlinuxgoogle colabjupyter notebook

Work Experience

Founding Developer

VaapisKaro

Jan 2025 - Present Greater Noida, India
  • Built and launched the startup’s first production website (vaapiskaro.com) using Next.js and Firebase.
  • Owned end-to-end development including frontend, backend, authentication, hosting, deployment, and domain management.
  • Managed Google Workspace, business email systems, and ongoing technical operations.

Machine Learning Engineer Intern

All India Council for Technical Education (AICTE)

Jun 2025 - Jul 2025 Remote
  • Completed a 6-week AI/ML internship, developing and evaluating supervised and unsupervised learning models in Python.
  • Applied core ML techniques through project-based implementations and mentor-guided technical evaluations under the IBM SkillsBuild program.

SAP Advanced Business Application Programming Developer Intern

CorporateServe Solutions Private Limited

Jun 2024 - Dec 2024 Gurugram, Haryana, India
  • Assisted in ABAP development, debugging, performance tuning, documentation, and translating business requirements into scalable SAP solutions across modules.

Projects

Locality – Peer-to-Peer Rental Marketplace Platform

FlutterFirebase
  • Built a peer-to-peer rental marketplace platform enabling users to list and rent products through a mobile-first interface.
  • Developed the app using Flutter and Firebase with authentication and product listing features.

Neural Network from Scratch with Optimization Analysis

NumPy
  • Implemented a fully connected neural network in NumPy with manual backpropagation and compared SGD, Momentum, RMSProp, and Adam on MNIST.
  • Achieved 89%+ test accuracy while improving convergence stability across optimizers.

Transformer vs LSTM: Comparative Study for Text Classification

LSTMTransformer
  • Built and evaluated LSTM and Transformer models for sentiment classification.
  • Improved classification accuracy by 4–6% using Transformer architecture over baseline LSTM model.

Reinforced Sparse Attention (RSA) for Efficient Transformer Models

Reinforcement LearningTransformer
  • Designing a reinforcement-driven sparse attention mechanism to reduce Transformer self-attention complexity from O(n^2) to near O(n) for long-sequence modeling.
  • Lowered projected memory overhead by 35% in simulation benchmarks for long-context sequences.
  • Evaluating sparsity policies, computational efficiency, and performance trade-offs across large-scale sequence tasks.

Leaderboard Standings

Leaderboard Position Pending

Global test scores, peer standing percentiles, and algorithm leaderboard ranks are updated dynamically.

Assessment Highlights

Assessments Not Completed

Coding evaluations, system assessment results, and conceptual score badges will appear here after taking a test.

AI Collaboration Score

AI Collaboration Score Pending

Developer coding behavior, assistant cooperation, and AI pair-programming indicators are evaluated during live coding sessions.

Role Compatibility Profile

Role Compatibility Analysis Pending

Custom matching reports, candidate role compatibility percentiles, and core engineer strength profiles are processed once conceptual code screenings are complete.

Achievements

LeetCode Achievement

Solved 131+ DSA problems on LeetCode (21 Hard, 60 Medium) with a contest rating of 1346.

Smart India Hackathon Semi-Finalist

Qualified for the Semi-Final Round in Smart India Hackathon (SIH).

Winner of Crazy Coder

Winner of Crazy Coder, Panorama 2021, Delhi Public School Kalyanpur.

SOF English Olympiad Silver Medalist

Silver medalist in SOF English Olympiad 2019.

Times NIE National Aptitude Challenge Finalist

Qualified for the City Finals of Times NIE National Aptitude Challenge 2016-17.

About Details

Professional Bio

Founding Developer @Vaapiskaro and AI/ML enthusiast with experience in full-stack development and research. Skilled in Python, Next.js, and deep learning frameworks, with a focus on building scalable solutions and optimizing neural network architectures.

Bachelor of Technology in Computer Science & Engineering

Amity University (2023 - 2027)

Languages: English, Hindi
Email: Locked