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Development & IT Consultation with Kundan K.

4.4 · 126 reviews

Development & IT Consultation with Kundan K.

4.4 · 126 reviews

I help businesses and developers design, review and implement scalable software systems and modern AI solutions.

You can hire me for:

Technical Consultation

Architecture & project planning review

Code review & performance optimisation

Debugging complex production issues

Best-practice recommendations

AI & LLM Solutions

AI Agent design and implementation

Retrieval Augmented Generation (RAG) systems

Integrating LLM APIs (OpenAI, open-source models)

Knowledge-base chatbots & document search systems

Backend & System Architecture

Spring Boot application development

Microservices architecture design

Event-Driven architecture (Kafka / RabbitMQ)

API design & system scalability improvements

Whether you are starting a new project, stuck with a bug, or want to upgrade your system to AI-powered architecture — I can guide you and implement the solution end-to-end.
Get personalized advice on:
AI & Machine Learning AI Integration Database Development Mobile App Development Web Programming

You’re covered with payment protection

Kundan K.Status: Offline

About Kundan

Kundan K.Status: Offline
Sr. Java Engineer | Spring Boot | REST API | Agentic AI | RAG | AWS
100% Job Success
4.4  (126 reviews)
Patna, India - 9:30 am local time
I am Kundan, holding a 𝗠𝗮𝘀𝘁𝗲𝗿'𝘀 𝗱𝗲𝗴𝗿𝗲𝗲 𝗶𝗻 𝗖𝗼𝗺𝗽𝘂𝘁𝗲𝗿 𝗔𝗽𝗽𝗹𝗶𝗰𝗮𝘁𝗶𝗼𝗻 and a 𝗕𝗮𝗰𝗵𝗲𝗹𝗼𝗿'𝘀 𝗱𝗲𝗴𝗿𝗲𝗲 𝗶𝗻 𝗜𝗻𝗳𝗼𝗿𝗺𝗮𝘁𝗶𝗼𝗻 𝗧𝗲𝗰𝗵𝗻𝗼𝗹𝗼𝗴𝘆. Results-driven Senior Backend/FullStack Engineer with 13+ years of experience in software design, development, and delivery using Java (8 to 21), Spring Boot, Microservices, and Event-Driven Architecture. Proven expertise in designing, developing, and launching products from scratch to go live, ensuring scalability, reliability, and seamless 3rd party API/system integration.
Worked on various Desktop application development for Industrial automation and dashboard development using Java Swing & JavaFX. Able to integrate with various HID & Industrial hardware devices.
Real experience Migrating java legacy application to Spring Boot, Removing technical debt, Migrating SOAP to REST, upgrade from javax to jakarta package for servlet, web-sockets.

Good in Agentic AI development, Expert in LightRAG, OpenHands, Claude and LangChain4j, have built multiple RAG + multimodal AI features. Skilled with Vector Databases including Pinecone and ChromaDB, along with embeddings, chunking, memory graphs, and optimized retrieval pipelines. Integrated major LLM platforms like OpenAI, Gemini, Anthropic, and DeepSeek into production systems. Advance level of Prompt engineering and AI memory context management. Also working on MCP server development and managing Deployment on Railway. Created Agent in Claude Workspace, TypingCloud, Claude integrated various MCP Connector.


🔹 𝗖𝗲𝗿𝘁𝗶𝗳𝗶𝗲𝗱 𝗘𝘅𝗽𝗲𝗿𝘁𝗶𝘀𝗲:
Oracle Certified Java Professional
Solace Certified Solutions Consultant

🔹 𝗦𝘆𝘀𝘁𝗲𝗺/API 𝗜𝗻𝘁𝗲𝗴𝗿𝗮𝘁𝗶𝗼𝗻:
Integrated 𝗦𝗔𝗣 𝗠𝗮𝘀𝘁𝗲𝗿 𝗗𝗮𝘁𝗮, Salesforce, 𝗔𝗺𝗱𝗼𝗰𝘀 𝗖𝗥𝗠, 𝗛𝘂𝗯𝗦𝗽𝗼𝘁 𝗖𝗥𝗠, 𝗭𝗼𝗵𝗼 𝗖𝗥𝗠, 𝗪𝗲𝗰𝗹𝗮𝗽𝗽
𝗘𝗥𝗣, 𝗤𝘂𝗶𝗰𝗸𝗕𝗼𝗼𝗸𝘀, 𝗫𝗲𝗿𝗼, 𝗦𝘁𝗿𝗶𝗽𝗲, 𝗣𝗮𝘆𝗣𝗮𝗹, and more. Expertise in designing, developing, and
deploying 𝗠𝘂𝗹𝗲𝗦𝗼𝗳𝘁 𝗜𝗻𝘁𝗲𝗴𝗿𝗮𝘁𝗶𝗼𝗻 solutions using 𝗔𝗻𝘆𝗽𝗼𝗶𝗻𝘁 𝗦𝘁𝘂𝗱𝗶𝗼 and 𝗖𝗹𝗼𝘂𝗱𝗛𝘂𝗯.

🔹 𝗦𝗲𝗰𝘂𝗿𝗶𝘁𝘆/𝗘𝗻𝗰𝗿𝘆𝗽𝘁𝗶𝗼𝗻:
Strong understanding of security protocols (𝗦𝗦𝗟/𝗧𝗟𝗦, 𝗢𝗔𝘂𝘁𝗵𝟮, 𝗝𝗪𝗧, 𝗕𝗮𝘀𝗶𝗰 𝗔𝘂𝘁𝗵), 𝗖𝗿𝘆𝗽𝘁𝗼𝗴𝗿𝗮𝗽𝗵𝘆
Data encryption/decryption to ensure 𝗚𝗗𝗣𝗥, HIPPA, PCI DSS 𝗰𝗼𝗺𝗽𝗹𝗶𝗮𝗻𝗰𝗲. Also validate & make
sure application is following the OWASP security guidelines.

🔹 𝗞𝗲𝘆 𝗘𝘅𝗽𝗲𝗿𝘁𝗶𝘀𝗲:
✔ Microservices & API Development – RESTful, SOAP & gRPC APIs with Spring Boot
✔ Architecture – Event-Driven Architecture (Solace PubSub+, KubeMQ, AxonIQ, Kafka, Event
Sourcing & CQRS), Service Oriented Architecture (Mulesoft, Apache Camel)
✔ Version Control & CI/CD – Git, GitLab, GitHub, Bitbucket
✔ Cloud Platforms & Deployment – AWS (EC2, RDS, ECS, CDK, S3, Lambda, Cloudwatch,
Cognito), Azure (Azure Repo, Pipeline, Azure SQL, Managing Azure APIM), Google Cloud
Platform (App Engine, Firebase, Big Query, Managed VM, Managed database instance),
Heroku, Digital Ocean
✔ Design Patterns – Singleton, Factory, Observer, Builder, Circuit Breaker, Event Sourcing, CQRS,
DDD, TDD, SOLID principles
✔ Database & Search – PostgreSQL, MySQL, MongoDB, Elasticsearch, GraphQL
✔ CI/CD & Containerization – Docker, Kubernetes, GitLab CI/CD, AWS, Azure, GCP, DigitalOcean
✔ Agile & Project Management – Sprint planning, sprint refinement, code reviews, architecture
discussions (Worked on Atlassian Jira, Shortcut, Trello)
✔ Frontend & Desktop Applications – Angular, React, JSP, JSF, Java Swing, JavaFX
✔ Tools & IDEs – IntelliJ, NetBeans, Eclipse STS, VS Code, MuleSoft Anypoint Studio, Postman,
PgAdmin, MySQL Workbench, DataGrip, DBVisualizer
✔ Domain Experience: Deep industry expertise in Fintech Services, Electric Vehicles (EV),
Telecom, Recruitment, eCommerce and AI.

Intermediate skills in Kotlin, Groovy, GoLang, Python, , C++, C#, Visual Basic, Salesforce Apex, SAP HANA DB Android app development using Java or Kotlin. Good Experience in FIX protocol and QuickFixJ library.

💡 𝗣𝗮𝘀𝘀𝗶𝗼𝗻𝗮𝘁𝗲 𝗮𝗯𝗼𝘂𝘁 𝘀𝗰𝗮𝗹𝗮𝗯𝗹𝗲 𝗯𝗮𝗰𝗸𝗲𝗻𝗱 𝘀𝗼𝗹𝘂𝘁𝗶𝗼𝗻𝘀, 𝗿𝗲𝗮𝗹-𝘁𝗶𝗺𝗲 𝗲𝘃𝗲𝗻𝘁 𝗽𝗿𝗼𝗰𝗲𝘀𝘀𝗶𝗻𝗴, 𝗮𝗻𝗱 𝗱𝗿𝗶𝘃𝗶𝗻𝗴 𝗽𝗿𝗼𝗱𝘂𝗰𝘁 𝘀𝘂𝗰𝗰𝗲𝘀𝘀 𝘁𝗵𝗿𝗼𝘂𝗴𝗵 𝗶𝗻𝗻𝗼𝘃𝗮𝘁𝗶𝘃𝗲 𝗲𝘃𝗲𝗻𝘁-𝗱𝗿𝗶𝘃𝗲𝗻 𝗮𝗿𝗰𝗵𝗶𝘁𝗲𝗰𝘁𝘂𝗿𝗲𝘀. 🚀
Let’s connect and collaborate! 🤝

What to expect

Schedule the consultation
Choose from the freelancer’s available days and times.
Get advice for your custom needs
Share details about your project and what you want to talk about. The freelancer will review and reach out if they have questions.
Join the Zoom meeting
1-on-1 meeting with the freelancer to discuss your needs and project.
Approve the work
The freelancer will finish up the documents you asked for and send them to you for approval:
    Before the consultation

    Here’s what Kundan will need to know before you meet

    1. Tell me about yourself and what you want to talk about
    Rating is 4.4 out of 5.
    (126)
    5 stars
    72% Complete
    (91)
    4 stars
    14% Complete
    (18)
    3 stars
    8% Complete
    (10)
    2 stars
    2% Complete
    (3)
    1 star
    3% Complete
    (4)
    GP
    Gillian P.
    5.0
    May 5, 2026
    Jnr - Mid level Full Stack developer Kundan joined us for what was supposed to be a two month period. Over two years later he was still with us, he had become a valuable member of the team. He delivers high quality work on time and with a great attitude. He went out of his way to help others and was a pleasure to work with. I would recommend him to anyone looking for a top class developer.
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