Senior Java Developer (MQTT) - EnergyTech

Location: Singapore
Job Type: Permanent
Contact: Shazri Sofi
Email: email Shazri
Posted: about 1 year ago

We are looking for Senior Java Developer(s) who have a deep passion to improve the environmental and financial sustainability of entities to build complex groups of back-end services. 

The client is an energy tech company redefining the future with intelligent technology. Join a diverse, quirky and high performing team that is dedicated as well as has enormous fun doing so.

Your primary responsibility will be to design and develop server-side protocols and coordinate with the rest of the team working on different layers of the infrastructure. If you have hands-on experience developing software with agile methodologies, we’d like to meet you.


  • Responsible for the design and development of server-side protocols for Edge, devices, and models.
  • Responsible for the development work related to master data and MQTT connectivity.
  • Design, build, and maintain efficient, reusable, and reliable Java code
  • Participate in the deployment, operation and maintenance of products to ensure the high availability of the system
  • Help maintain code quality, organization, and automation. Document development phases
  • Overcome technical difficulties in data isolation, system decoupling, cloud solutions, etc
  • Ensure our applications are secure and up to date


  • Master’s degree or above in Computer or Software or prior experience in Engineering
  • Proficient in JAVA and TCP/IP communication, and familiar with popular MQ frameworks, common kv systems like mongo and redis, and messaging systems.
  • Proficient in Elasticsearch and able to optimize ES to avoid bugs. Those with massive data experience are preferred.
  • Familiar with netty framework and implementation. Those with experience in implementing custom protocol based on netty and making it go live in production environment are preferred.
  • Familiar with IoT application layer protocols like MQTT, CoAP, AMQP, and DDS.

Reaching out

For a confidential discussion on this or any other opportunities available in the market please contact Shazri Sofi at - Direct Line: +65 6340 1943

EA License No: 16S8303 - EA Registration No: R1767725