Lead Java Backend Architect Spring Boot WebFlux Kubernetes

EVYONIC SOLUTIONS PTE. LTD.; Singapore; On-site; SGD 140,000 - 200,000; Full time

Job summary

EVYONIC SOLUTIONS PTE. LTD. seeks a senior backend engineer to lead development of scalable Java/Spring Boot applications.

You will design reactive services with WebFlux, build RESTful microservices, and automate workflows with BPM solutions. You will implement API tests with WireMock and work with SQL/NoSQL databases including PostgreSQL and DynamoDB. The role requires 9+ years in backend development, strong Java, AWS, and CI/CD expertise, and familiarity with AI elements like pgvector and RAG

Qualifications

• 9+ years in software development, backend architecture, and enterprise integration.
• Strong Java and Spring Boot experience.
• Hands-on with Spring WebFlux and reactive programming.
• Experience with RESTful APIs, microservices, and distributed systems.
• Experience with BPM solutions and workflow automation.
• Experience with WireMock or similar API testing tools.
• Experience with PostgreSQL, MySQL, Oracle DB, and DynamoDB.
• Experience in automated unit and integration testing.
• Experience with AWS, Docker, Kubernetes, and CI/CD.
• Experience with API security, authentication, and authorization.
• Knowledge of Python and FastAPI is a plus.
• Knowledge of frontend tech like React, Next.js, JavaScript, HTML, CSS is a plus.
• Experience with pgvector and RAG pipelines using Langfuse and RAGAS is a plus.

Responsibilities

• Lead development and maintenance of scalable backend apps with Java and Spring Boot.
• Design reactive services with Spring WebFlux for asynchronous processing.
• Develop and maintain RESTful APIs for inter-system communication.
• Build microservices-based solutions for complex business needs.
• Automate workflows and implement BPM solutions to boost efficiency.
• Create API contract tests using WireMock; promote testing practices.
• Manage data with PostgreSQL, MySQL, Oracle DB, and DynamoDB.
• Contribute to AI-enabled apps using vector search, pgvector, RAG.
• Monitor AI app performance with Langfuse and RAGAS.
• Support deployment on AWS, Docker, Kubernetes; maintain CI/CD pipelines.
• Code reviews, mentor developers, coordinate technical delivery.
• Troubleshoot production issues and ensure reliability.

Skills

Java

Spring Boot

Reactive programming

RESTful APIs

Microservices

AWS

Docker

Kubernetes

CI/CD

API security

Python

FastAPI

React

JavaScript

HTML/CSS

Langfuse

RAG pipelines

pgvector

DynamoDB

Tools

WireMock

Langfuse

RAGAS

pgvector

PostgreSQL

MySQL

Oracle DB

DynamoDB

AWS

Docker

Kubernetes

Job description

EVYONIC SOLUTIONS PTE. LTD. seeks a senior backend engineer to lead development of scalable Java/Spring Boot applications.

You will design reactive services with WebFlux, build RESTful microservices, and automate workflows with BPM solutions. You will implement API tests with WireMock and work with SQL/NoSQL databases including PostgreSQL and DynamoDB. The role requires 9+ years in backend development, strong Java, AWS, and CI/CD expertise, and familiarity with AI elements like pgvector and RAG