Spring Boot Batch Lambda

@abhayk49

Hello, I’d be happy to support your Java 21 / Spring Boot backend project. I have solid experience building and maintaining Java + Spring Boot applications and can help with feature development, bug fixing, code reviews, and clear explanations. Key skills & experience: ✅ Java 21, Spring Boot, REST APIs ✅ Spring Batch & Java lambda / functional programming ✅ Spring Security (auth & authorization) ✅ JPA / Hibernate with PostgreSQL ✅ AWS: EC2, RDS, S3, IAM, Lambda ✅ Clean code, proper package structure & Spring conventions ✅ Automated testing: JUnit, Mockito, API testing How I work: ✅ Incremental delivery with regular updates ✅ Well-documented and readable code ✅ Clear communication and code walkthroughs ✅ Comfortable explaining logic and reviewing assignments Availability: ✅ Remote support for tasks, bug fixes, and guidance If you’re looking for a reliable Java developer who can deliver clean code and help you understand it, I’m ready to get started. Thanks, Abhay Kumar

@vaibhavs52

Hello, I’m an experienced Java & Spring Boot developer and can build a clean, production-ready Spring Batch application wrapped for Lambda-style, on-demand execution, exactly as you described. What I’ll deliver Spring Boot (Java 21) + Spring Batch application Lambda-style execution using the AWS Lambda runtime adapter Chunk-oriented batch job with: Dedicated ItemReader, ItemProcessor, and ItemWriter PostgreSQL integration Configurable chunk size Robust error handling, retries, and transaction management SLF4J + Logback structured logging JUnit 5 tests covering processing and edge cases Technical highlights Clean separation of concerns (reader/processor/writer) Externalized configuration via environment variables Idempotent job execution suitable for on-demand runs Maven build producing a deployable artifact Optional Flyway/Liquibase SQL migration scripts if schema changes are required Deliverables Git repository with full source code and clear README Maven build ready for Lambda or container deployment Step-by-step instructions to: Configure PostgreSQL connectivity Trigger and test the batch job locally or in Lambda SQL migration scripts (if needed) Ongoing support I’m available for: Bug fixes and enhancements Code reviews and explanations Assignment review and optimization Daily or on-demand collaboration (1–2 hrs/day)

@AyoolaLucas

What makes me the best candidate for this project is that my skills line up very closely with what you’re asking for: a modern Spring Boot application that wraps a Spring Batch job, runs on‑demand in a Lambda‑style environment, and talks to PostgreSQL in a safe, robust way. I work specifically with Java, Spring Boot, Spring Batch, and relational databases, so designing a clear reader processor writer pipeline with chunk‑based reading and writing to PostgreSQL is exactly in my zone. I pay a lot of attention to code structure and maintainability. For this project, that means separate reader, processor, and writer components, proper configuration for the Lambda runtime adapter, and a clean Maven setup that produces a deployable artifact for your chosen runtime. You will get robust error handling, SLF4J/Logback logging around key batch steps, and JUnit 5 tests that cover the processing logic so you can trust changes in the future. Finally, I focus on making handover smooth: a well‑organized Git repository, a clear README, SQL migration scripts for any extra tables or indexes, and simple environment‑variable based configuration for PostgreSQL and triggering a test run. I’m also comfortable explaining the code, reviewing assignments, and helping debug issues on an ongoing basis, which fits your need for a remote Java + Spring Boot developer who can support you 1–2 hours per day as required.

@vladimirfirebird

Hello I would be glad to help you develop your project. I have a lot of experience working with SpringBoot's RESTful API for the backend. I have experience developing a backend for currency exchange operations for a large bank. Also worked as a backend for the purchase/sale of securities in the same bank. In my work I have used Java 17+, Hibernate, varios SQL databases e.g. PostgreeSQL, MySQL, Firebird etc. NoSQL - Redis, MongoDB. On first time I agree to do it for a symbolic fee and a good recommendation on the site since I am new to this site. I will be glad to cooperate with you. There are no impossible tasks for meю Best regards, Vladimir.

@parasjain8

Hello, I’ve reviewed your requirements and can build a Spring Boot + Spring Batch application using Java 21 that runs in a Lambda-style, on-demand execution model with PostgreSQL. I’ll implement clear reader–processor–writer separation, robust error handling, SLF4J/Logback logging, and JUnit 5 tests for processing logic. You’ll receive a Git repo, Maven build, README, env-based DB configuration, and migration scripts if needed. I’m also available for ongoing support, bug fixes, code reviews, and explanations (1–2 hrs/day or on-demand). Looking forward to working with you. Paras Jain

@abhishekj712

Hey, I have near 4 year experience working with Java and Spring Boot. I can prove to be an asset for you project. While working with me can feel like super natural and collaborative. I assure to understand all details of your project bit by bit and accompany you in your goal till the last point, not leaving any loophole in the project

@Chsrjava

Build the project with spring boot and postgresql by configuring the property vfiles for different environments to connect to DB and other resources. The whole project build with maven and maintain the code in git repository.

@kartheekr5

I am intersted this project because I possess an extensive background in J2EE, precisely matching the technical needs of your project. Over the years, I have developed a solid understanding of Spring Boot, Spring Batch, and Lambda runtime for on-demand deployment — abilities that are imperative for successful completion of your project. Beyond having a robust knowledge in Java and Spring frameworks, my experience includes implementing solutions that connect to various data sources including PostgreSQL, which is the database you require. My expertise in handling large volumes of data, chunk processing, and building reader-processor-writer classes aligns perfectly with the deliverables you expect from this project. Moreover, I believe my communication skills combined with my willingness to work diligently on tasks will be valuable traits for our remote collaboration. I strive for excellence in every aspect of my work and can assure you the delivery of robust code, complete documentation, clear instructions, and a readily deployable artifact to enhance remote operational efficiency. My monthly budget is highly flexible to accommodate or negotiate as per your requirements. Why delay? Let's connect and bring this project to fruition efficiently and effectively!

@tatikondav

Hello, I am new to freelancing, but I have successfully completed a couple of projects using Java and Spring Boot. These projects include fully functional and efficient CRUD operations, PostgreSQL as the database, and JWT-based authentication for secure user access. In addition, I have a strong foundation in Data Structures and Algorithms, and I am highly motivated to deepen my expertise in Spring Boot and broader software development practices. I believe my technical skills, learning mindset, and commitment to quality make me a good fit for this role. I am confident that I can contribute meaningfully to this project while also gaining valuable exposure to new concepts and technologies. I would welcome the opportunity to collaborate and grow through this engagement. Thank you for your time and consideration phn no: +91 9704994275

@khushiguptakhush

Hi, I’m a Java developer with experience in Spring Boot and Spring Batch, and I can build the concise application you described that wraps a batch job for on‑demand execution (Lambda‑style). I will: ✔ Use Java 21 with Spring Boot and Spring Batch ✔ Connect to your PostgreSQL database and process data in chunks (reader → processor → writer) ✔ Ensure robust error handling and structured SLF4J/Logback logging ✔ Write JUnit 5 tests for the processing logic ✔ Deliver a clean Git repository with source code and a descriptive README ✔ Include a Maven build that produces a deployable artifact and clear instructions for running/testing locally or in an AWS Lambda (or similar) environment I communicate clearly, follow clean code practices, and can deliver this within 7 days. My bid for this project is ₹6,000–₹7,000 INR (negotiable) depending on any additional details you want included. Looking forward to working with you! — Khushi

@shaktiprasad711

Hi, I can deliver a clean, production-ready Spring Boot application that wraps a Spring Batch job for Lambda-style, on-demand execution. Using Java 21, Spring Boot, Spring Batch, and the AWS Lambda runtime adapter, I will design a modular batch job with a clear separation of ItemReader, ItemProcessor, and ItemWriter, backed by PostgreSQL. The solution will read data in configurable chunks, apply your custom business logic, and write results back efficiently with transaction management. Robust SLF4J/Logback logging, retry/skip handling, and meaningful error reporting will be included. I will also provide JUnit 5 tests covering processing logic and edge cases. Deliverables include a Git repository with clean code, a detailed README, a Maven build producing a deployable artifact, environment-variable-based DB configuration, Lambda trigger instructions, and SQL migration scripts if schema changes are needed. I’m comfortable integrating with your existing PostgreSQL schema, validating results against your expected output, and ensuring the job runs reliably in an on-demand/serverless context.