Java Developer - AWS Expertise

Tech ECS Limited; Kolkata District; On-site; INR 1,500,000 - 2,300,000; Full time

Job summary

Tech ECS Limited is seeking a highly skilled Senior Java Developer to design, implement and support payment functionalities worldwide. You will work on high-volume, low-latency systems, handling 3000 Transactions Per Second (TPS) and collaborating with cross-functional teams.

The role requires Java 11+ with Spring Boot, Rest API and AWS (DynamoDB, Lambda). You will mentor peers, perform peer reviews, and help maintain high-quality code while supporting live services and products.

Qualifications

• BE/B.Tech required with strong fundamentals.
• Design, implement and integrate scalable payment solutions.
• Collaborate with QA, Product, Engineering Managers and peers.
• Support live services and improve code quality through reviews.

Responsibilities

• Design, implement, and integrate scalable payment solutions.
• Deliver high-availability, low-latency systems supporting 3k TPS.
• Collaborate with QA, PMs, EMs and cross-functional teams.
• Perform peer reviews and mentor junior developers.
• Maintain high-quality code and implement improvements.

Skills

Java 11+

Spring Boot

Rest API

AWS (DynamoDB, Lambda)

Debugging

Education

BE/B.Tech

Tools

Jenkins

Caching technologies

Job description

Job Summary

We are seeking a highly skilled Senior Java Developer, focusing on payment functionalities worldwide. This role involves designing, implementing, and supporting high-volume, high-availability, low-latency systems, with an average of 3000 Transactions Per Second (TPS). As part of a collaborative and dynamic environment, you will work closely with cross-functional teams to deliver robust and scalable solutions.

Must-Have Skills (Mandatory)

• Programming: Java (version 11+), Spring Boot
• API: Rest API
• Cloud Services: AWS (DynamoDB, Lambda)
• Debugging: Strong debugging and problem-solving skills

Good-to-Have Skills (Optional)

• Experience with high-volume systems
• Knowledge of AWS services (UKS, SQS)
• Familiarity with Jenkins and caching technologies
• Exposure to peer code reviews and mentoring

Qualification & Description

• Education: BE/B.Tech only
• Responsibilities:
• Design, implement, and integrate scalable solutions.
• Collaborate with QA, Product Managers, Engineering Managers, and peer teams.
• Support live services and products.
• Perform peer reviews and provide mentorship to junior team members.
• Maintain high-quality code standards.
• Identify and implement functional/technical improvements for new or existing services.