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Hi, I’m Arshdeep Singh, a results-driven Full Stack Developer with 4+ years of experience delivering secure, scalable web applications in FinTech and enterprise environments. I specialize in designing robust backends with Java/Spring Boot and Node.js, and building responsive, user-friendly interfaces with React and Angular. I enjoy integrating ML/AI capabilities—such as fraud detection, recommendation systems, and NLP tasks—into production systems, and I’m proficient in CI/CD, TDD, and cloud deployments on AWS. I thrive in collaborative Agile teams and focus on delivering high-impact software that aligns with business goals. I’m passionate about observable, reliable systems, performance optimization, and continuous learning to keep up with evolving tech trends.…Hi, I’m Arshdeep Singh, a results-driven Full Stack Developer with 4+ years of experience delivering secure, scalable web applications in FinTech and enterprise environments. I specialize in designing robust backends with Java/Spring Boot and Node.js, and building responsive, user-friendly interfaces with React and Angular. I enjoy integrating ML/AI capabilities—such as fraud detection, recommendation systems, and NLP tasks—into production systems, and I’m proficient in CI/CD, TDD, and cloud deployments on AWS. I thrive in collaborative Agile teams and focus on delivering high-impact software that aligns with business goals. I’m passionate about observable, reliable systems, performance optimization, and continuous learning to keep up with evolving tech trends.

Arshdeep Singh

Full Stack Developer, Web Developer, Back-End Developer, +3

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Hi, I’m Arshdeep Singh, a results-driven Full Stack Developer with 4+ years of experience delivering secure, scalable web applications in FinTech and enterprise environments. I specialize in designing robust backends with Java/Spring Boot and Node.js, and building responsive, user-friendly interfaces with React and Angular. I enjoy integrating ML/AI capabilities—such as fraud detection, recommendation systems, and NLP tasks—into production systems, and I’m proficient in CI/CD, TDD, and cloud deployments on AWS. I thrive in collaborative Agile teams and focus on delivering high-impact software that aligns with business goals. I’m passionate about observable, reliable systems, performance optimization, and continuous learning to keep up with evolving tech trends.…Hi, I’m Arshdeep Singh, a results-driven Full Stack Developer with 4+ years of experience delivering secure, scalable web applications in FinTech and enterprise environments. I specialize in designing robust backends with Java/Spring Boot and Node.js, and building responsive, user-friendly interfaces with React and Angular. I enjoy integrating ML/AI capabilities—such as fraud detection, recommendation systems, and NLP tasks—into production systems, and I’m proficient in CI/CD, TDD, and cloud deployments on AWS. I thrive in collaborative Agile teams and focus on delivering high-impact software that aligns with business goals. I’m passionate about observable, reliable systems, performance optimization, and continuous learning to keep up with evolving tech trends.

Available to hire

Hi, I’m Arshdeep Singh, a results-driven Full Stack Developer with 4+ years of experience delivering secure, scalable web applications in FinTech and enterprise environments. I specialize in designing robust backends with Java/Spring Boot and Node.js, and building responsive, user-friendly interfaces with React and Angular. I enjoy integrating ML/AI capabilities—such as fraud detection, recommendation systems, and NLP tasks—into production systems, and I’m proficient in CI/CD, TDD, and cloud deployments on AWS.

I thrive in collaborative Agile teams and focus on delivering high-impact software that aligns with business goals. I’m passionate about observable, reliable systems, performance optimization, and continuous learning to keep up with evolving tech trends.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Intermediate

Language

Javanese

Advanced

Bashkir

Advanced

English

Fluent

Work Experience

Full Stack Developer at PayPal

July 1, 2023 - Present

Designed and implemented scalable backend systems using Spring Boot and React.js to support over 1 million daily financial transactions, ensuring PCI DSS and ISO 27001 standards throughout development and deployment. Built microservices and RESTful APIs for digital payments, KYC, and account workflows, integrating Kafka for asynchronous messaging and fault-tolerant processing, reducing processing delays by 28%. Incorporated ML models into payment authorization and fraud detection services using Python, TensorFlow, and scikit-learn, boosting real-time fraud identification accuracy by 25%. Optimized complex Oracle SQL queries with indexing and pagination, improving data retrieval speeds and backend throughput by 35%. Implemented AWS Lambda-based fraud detection and audit logging with S3 triggers, reducing manual intervention by 45%. Automated data validation and financial reconciliation using Python and batch pipelines with ML-based anomaly detection, reducing false positives by 30%. Mai

Software Developer at HCL Technologies

July 1, 2022 - September 11, 2025

Developed enterprise web applications with Java, Spring Boot, and Angular; improved page load times and responsiveness. Designed RESTful services interfacing with internal AI services for real-time sentiment analysis and image-based document extraction using OpenCV. Collaborated with data science teams to deploy ML inference endpoints as Dockerized microservices on AWS EC2, reducing latency by 40%. Built CI/CD pipelines with Jenkins, Docker, and automated model drift detection with rollback for ML models in production. Participated in Agile Scrum with cross-functional teams to deliver features on time and improve sprint velocity by 25%.

Full Stack Developer at PayPal

July 1, 2023 - Present

Designed and implemented highly scalable backend systems using Spring Boot and React.js to support over 1 million daily financial transactions, ensuring architecture compliance with PCI DSS and ISO 27001 standards throughout development and deployment.

Software Developer at HCL Technologies

July 1, 2022 - September 11, 2025

Developed and optimized high-performance, enterprise-grade web applications using Java, Spring Boot, and Angular, improving page load times by 20% and enhancing usability for internal and external users. Implemented ML inference endpoints and Dockerized microservices on AWS EC2 to improve processing speed and reduce latency.

Full Stack Developer at PayPal

July 1, 2023 - Present

Designed and implemented highly scalable backend systems using Spring Boot and React.js to support over 1 million daily financial transactions, ensuring PCI DSS and ISO 27001 standards throughout development and deployment. Built microservices and RESTful APIs for payments, KYC, and account workflows; integrated Kafka for asynchronous messaging, reducing processing delays by 28%. Incorporated ML models for fraud detection using Python, TensorFlow, and Scikit-learn, boosting real-time fraud identification accuracy by 25%. Optimized Oracle SQL queries via indexing and pagination, improving data retrieval speeds and backend throughput by 35%. Implemented LLM-powered auto-suggestions in merchant forms using OpenAI APIs to speed up submissions. Architected fraud detection and audit-logging with AWS Lambda and S3 triggers; reduced manual intervention by 45%. Automated data validation and reconciliation with batch pipelines, including ML-based anomaly detection, cutting false positives by 30%

Software Developer at HCL Technologies, India

July 1, 2022 - September 11, 2025

Developed enterprise web apps using Java, Spring Boot, and Angular; improved page load times and usability. Designed RESTful services interfacing with internal AI services for real-time sentiment analysis and image-based document extraction. Collaborated with data science teams to deploy ML inference endpoints as Dockerized microservices on AWS EC2, reducing latency by 40%. Established CI/CD pipelines with Jenkins and Docker, including model drift detection and automated rollback for ML models in production. Participated in Agile Scrum teams, delivering features on time and improving sprint velocity by 25%. Contributed to AI-ready data schemas and feedback loops to accelerate deployment of user behavior models.

Software Developer at HCL Technologies

June 1, 2020 - July 1, 2022

Developed and optimized high-performance, enterprise-grade web applications using Java, Spring Boot, and Angular, improving page load times and responsiveness. Created RESTful services interfacing with internal AI services for real-time sentiment analysis and image-based document extraction using OpenCV. Collaborated with data science teams to deploy ML inference endpoints via Dockerized microservices on AWS EC2, reducing latency by 40%. Built and maintained CI/CD pipelines with Jenkins and Docker, including model drift detection and automated rollback for ML models in production. Worked in Agile teams to deliver features, improve sprint velocity, and ensure defect-free releases.