Integration Engineer (Java +Python)

Mantras2Success; Ahmedabad District; On-site; INR 1,200,000 - 2,400,000; Full time

Job summary

Mantras2Success is seeking an Integration Engineer to build and maintain reliable integration services using Java 17+ and Python 3.11+. You will develop REST APIs with Spring Boot or FastAPI, implement messaging, databases, Dockerized services, CI/CD and observability, working with senior engineers.

You will work with RabbitMQ/SQS, JWT security, SQL databases, AWS awareness, and testing with JUnit/pytest. This role emphasizes robust integration patterns, code reviews, and CI/CD pipelines.

Qualifications

• Experience building microservices with Java and Python.

Responsibilities

• Develop REST APIs and integration services using Spring Boot or FastAPI, including validation, error handling, and pagination.
• Develop Python services using FastAPI, async/await, Pydantic, and async httpx.
• Build RabbitMQ/SQS producers and consumers with retries and dead-letter handling.
• Implement API security using Spring Security, JWT, role-based access, and FastAPI security.
• Develop unit and integration tests using JUnit 5, Mockito, pytest, and Testcontainers.
• Containerize services using Docker and support deployments through Jenkins.
• Follow Git/Bitbucket PR workflows and contribute to code reviews.
• Implement structured logging and tracing using ELK/Kibana and Zipkin.
• Work with AWS environments and troubleshoot integration issues.

Skills

Java

Spring Boot

REST APIs

Python

FastAPI

JWT / Security

PostgreSQL / MySQL

Docker

Git / Bitbucket

CI/CD

Observability

Tools

Docker

Docker Compose

Kubernetes

Jenkins

RabbitMQ

SQS

AWS

JUnit/pytest

Testcontainers

Git

Job description

ABOUT THE ROLE:

We are looking for an Integration Engineer to build and maintain reliable integration services using Java 17+ and Python 3.11+. The role will involve Spring Boot/FastAPI development, APIs, messaging, databases, Docker, CI/CD, and observability while working closely with senior engineers.

KEY RESPONSIBILITIES:

• Develop REST APIs and integration services using Spring Boot or FastAPI, including validation, error handling, and pagination.
• Develop Python services using FastAPI, async/await, Pydantic, and async httpx.
• Build RabbitMQ/SQS producers and consumers with retries and dead-letter handling.
• Implement API security using Spring Security, JWT, role-based access, and FastAPI security.
• Develop unit and integration tests using JUnit 5, Mockito, pytest, and Testcontainers.
• Containerize services using Docker and support deployments through Jenkins.
• Follow Git/Bitbucket PR workflows and contribute to code reviews.
• Implement structured logging and tracing using ELK/Kibana and Zipkin.
• Work with AWS environments and troubleshoot integration issues.

REQUIRED SKILLS:

• Strong Core Java knowledge including OOP, collections, streams, exceptions, concurrency basics, and Java 17 features.
• Hands-on Spring Boot experience with REST, Data JPA, validation, profiles, and @ControllerAdvice.
• Familiarity with Spring Security, JWT, and role-based access.
• Hands-on Python experience with FastAPI, Pydantic, async/await, and type hints.
• Understanding of microservices, API Gateway, service discovery, circuit breakers, and sync vs. async communication.
• Good knowledge of REST/HTTP, JSON, idempotency, and OAuth2/JWT basics.
• Hands-on SQL with PostgreSQL/MySQL, including joins, indexes, and transactions.
• Hands-on Git/Bitbucket experience.
• Familiarity with Docker, Dockerfile, and Docker Compose.

GOOD TO HAVE:

• RabbitMQ/SQS and async Python microservices.
• Jenkins and CI/CD pipeline troubleshooting.
• AWS: EC2, S3, SQS, Lambda.
• Kibana and Zipkin.
• SOAP/XML, CSV, and SFTP integrations.
• Webhook security using HMAC.
• Flyway/Liquibase, Alembic, and Redis.
• SonarQube and dependency scanning.