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TRCI-26-04485
Senior Backend Developer (Java/Spring, Kafka)
Senior backend developer needed on a contract basis in Lyon (occasional remote) to design and build the backend of an application, implement robust code following best practices, contribute to continuous improvement, and support the lead developer through proactive technical guidance. The role includes fixing functional/technical issues, participating in workshops and code reviews, challenging requirements against technical constraints, and implementing unit/integration/non-regression tests. Core stack is Java 17 with Spring Boot/Spring Batch and Kafka, with strong expectations around testing/quality (TDD, Cypress), performance optimization (SQL execution plans), CI/CD and integration practices.
Position summary
- Location
- France
- Workplace
- On-site
- Employment
- Contract
- Experience
- Minimum 6 years and Maximum 10 years
Role overview
Why This Role Matters.
Senior backend developer needed on a contract basis in Lyon (occasional remote) to design and build the backend of an application, implement robust code following best practices, contribute to continuous improvement, and support the lead developer through proactive technical guidance. The role includes fixing functional/technical issues, participating in workshops and code reviews, challenging requirements against technical constraints, and implementing unit/integration/non-regression tests. Core stack is Java 17 with Spring Boot/Spring Batch and Kafka, with strong expectations around testing/quality (TDD, Cypress), performance optimization (SQL execution plans), CI/CD and integration practices.
Your Impact
Deliver Enterprise Value
Help organisations solve complex business problems through modern technology, consulting expertise and measurable outcomes.
Collaboration
Work Across Teams
Collaborate with consultants, architects, engineers and client stakeholders throughout the project lifecycle.
Growth
Learn Continuously
Gain exposure to enterprise technologies, certifications, mentoring and real-world project experience.
Career Path
Grow With Ubique
Build a long-term consulting career with opportunities to take on greater responsibility and leadership over time.
Responsibilities
What You'll Be Doing.
Every role at Ubique contributes directly to solving meaningful business challenges for our clients.
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As a senior dev back, he will be a support to the lead dev of his team, will have to be a driving force and proactive on team issues and help with the collective development of skills.
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o Participate in the design and implementation of the development of the back application based on the functional specifications
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o Develop in accordance with the best practices defined, in a robust and efficient way
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React, Java 17, Sprinboot, Springbatch, Kafka, Oracle, Ansible, Jenkins, Terraform, Gatling, IBM Maximo, Camel, Linux
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Testing & quality (meaning Cypress / TDD / SQL perf, SQL execution plan)
Technology stack
Tools & Technologies.
The platforms and technologies you'll use to build modern, enterprise-grade solutions.
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React
Required
02
Java 17
Required
03
Spring Boot
Required
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Springbatch
Required
05
Kafka
Required
06
Oracle
Required
07
Ansible
Required
08
Jenkins
Required
09
Terraform
Required
10
Gatling
Required
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IBM Maximo
Required
12
Camel
Required
13
Linux
Required
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TDD
Required
15
Cypress
Required
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SQL execution plan
Required
17
CI/CD
Required
18
IaC
Required
Requirements
Skills & Experience.
We value curiosity, collaboration and continuous learning. If you don't meet every requirement but believe you can make an impact, we'd still love to hear from you.
Essential
Required Qualifications
Java (Java 17)
Spring (Spring Boot)
Apache Kafka
Testing & quality practices (TDD)
Unit, integration, and non-regression testing
SQL performance tuning (execution plans)
Code reviews
Performance optimization
Agile fundamentals
Troubleshooting and anomaly correction
Preferred
Nice to Have
Spring Batch
React (team stack; not core for backend)
Oracle Database
CI/CD (Jenkins)
Infrastructure as Code (Terraform)
Configuration management (Ansible)
Performance testing (Gatling)
Apache Camel
Linux
IBM Maximo
Technical documentation writing
Build tools (e.g., Maven/Gradle)
What you'll gain
More Than Just A Job.
We're committed to helping every team member grow professionally, personally and technically while working on meaningful projects.
Global Exposure
Collaborate with international clients and multicultural teams on enterprise programmes.
Continuous Learning
Expand your expertise through mentoring, certifications and hands-on project experience.
Career Growth
Take ownership, develop leadership skills and grow your consulting career over time.
Flexible Working
Hybrid and remote collaboration designed around trust and delivering exceptional outcomes.
People First
Join a supportive culture where collaboration, respect and long-term relationships come first.
Enterprise Projects
Work on meaningful technology initiatives for leading organisations across industries.
Apply
Apply for Senior Backend Developer (Java/Spring, Kafka)
One page, about two minutes. We only ask for what we actually need to have a first conversation.