Backend Developer

Job description

Job Description Summary

We are seeking a skilled Back-End Developer to build high-performance microservices that power our energy management and sustainability platforms. You will work with Java 21 and Spring Boot 3.5 to create scalable systems that process real-time energy data, integrate with industrial equipment, and provide RESTful APIs for our front-end applications. The ideal candidate will develop multi-threaded, event-driven services that handle diverse protocols (MQTT, SFTP, SQL) and ensure our platform can scale to support enterprise clients with thousands of connected devices.

Job Description

Key Responsibilities:

Microservices Development

·  Develop microservices using Java 21 and Spring Boot 3.5 with focus on performance and scalability
·  Design and implement RESTful APIs following best practices and OpenAPI specifications
·  Write clean, maintainable, and well-tested code following SOLID principles
·  Develop automated tests using JUnit, Mockito, and REST Assured
·  Participate in code reviews and contribute to back-end architecture decisions

Data Processing & Integration

·  Build event-driven processing systems using MQTT for real-time energy data ingestion
·  Implement multi-threaded processing to handle high-volume data streams efficiently
·  Develop data integration modules supporting multiple protocols (MQTT, SFTP, SQL, REST)
·  Design and optimize database schemas for relational and time-series data
·  Implement load balancing strategies and ensure high availability of services

Cloud & DevOps Integration

·  Integrate with AWS services (ECS, SSM, S3, etc.) for cloud-native deployments
·  Implement monitoring and logging using CloudWatch, Grafana, and custom metrics
·  Collaborate with DevOps team to optimize deployment pipelines and infrastructure
·  Debug and optimize performance bottlenecks in production systems

Agile Collaboration

·  Collaborate with front-end developers to define API contracts and data models
·  Work within SAFe Agile methodology using Jira for task management
·  Contribute to technical documentation in Confluence
·  Participate in sprint planning, daily standups, and retrospectives

Qualifications

Education

·  Bachelor's or Master's degree in Computer Science, Engineering, or related field, or equivalent professional experience

Experience

·  Minimum of 3 years of professional back-end development experience with Java
·  Strong experience with Spring Boot framework (version 3.x preferred)
·  Solid understanding of RESTful API design and implementation
·  Experience with relational databases (PostgreSQL, MySQL) and SQL
·  Experience with multi-threaded programming and concurrent processing
·  Experience with MQTT protocol and message-oriented middleware (desirable)
·  Experience with time-series databases (InfluxDB, TimescaleDB) (desirable)
·  Experience with event-driven architecture and asynchronous processing (desirable)
·  Knowledge of energy data protocols or industrial IoT systems (desirable)

Technical Skills

·  Core:  Java 21, Spring Boot 3.5, RESTful API design (required)
·  Protocols:  MQTT, SQL, SFTP, REST API, load balancing (required)
·  Processing:  Multi-threaded programming, event-based architectures (required)
·  Database:  SQL databases, understanding of time-series data
·  Cloud:  AWS services (ECS, SSM, CloudWatch), Docker
·  Tools:  Git/GitHub, Jira, Confluence, IntelliJ IDEA or similar IDE (required)
·  Testing:  JUnit, Mockito, REST Assured (required)
·  Monitoring:  CloudWatch, Grafana, InfluxDB, Telegraf
·  Experience with Apache Kafka, Redis, or RabbitMQ (desirable)
·  Knowledge of security best practices and OAuth2 (desirable)
·  Understanding of microservices patterns (circuit breaker, saga, etc.) (desirable)

Soft Skills

·  Write clean, efficient, and maintainable code following best practices
·  Strong problem-solving skills and ability to debug complex issues
·  Understanding of microservices architecture and distributed systems concepts
·  Proficient with Git version control and collaborative development workflows
·  Experience with test-driven development and automated testing
·  Ability to work independently while collaborating effectively with the team
·  Eager to learn new technologies and continuously improve skills
·  Good communication skills to discuss technical solutions with team members

Languages

·  Fully proficient in English both written and spoken (required)
·  Knowledge of French or German (desirable)

Certifications

·  Java certifications (Oracle Certified Professional) (desirable)
·  Spring Professional Certification (desirable)
·  AWS certifications (Cloud Practitioner, Developer Associate) (desirable)

Additional Information

Relocation Assistance Provided: No