Senior Software Engineer - Freelance

KSM; Strasbourg; On-site; EUR 111,000 - 166,000; Full time

Benefits offered by this job

Competitive daily rate

Participation in international projets

Exposure to modern technologies

Job summary

KSM is seeking a Senior Software Engineer (Freelance) to develop, configure, and maintain software components for complex digital projects. You will integrate solutions with PaaS, ensure quality via tests, and collaborate with the architecture team on design and documentation.

This role requires leading with a technical mindset and following SDLC best practices. The ideal candidate has extensive Java/Spring experience, microservices knowledge, and thrives in Agile environments.

Qualifications

• Bachelor’s degree in Computer Science or related field.
• Minimum 10 years of experience in software development.
• Strong experience (5+ years) with Java, Spring, Spring Boot.
• Experience in microservices architectures.
• Experience working in Agile environments.
• Ability to provide technical guidance.

Responsibilities

• Develop, Configure and Maintain software components.
• Integrate solutions with PaaS and other components or applications.
• Secure quality via unit tests and automation test scripts.
• Collaborate with architecture team in the design and/or technical documentation of components or solutions.
• Participate in Code Reviews, adhere to software development best practices and improve code quality standards (SDLC).

Skills

Java

Spring

Spring Boot

Microservices

Agile

Technical guidance

Education

Bachelor’s degree in Computer Science

Tools

CI/CD

REST

GRPC

Elastic

Cloud Native

OCP

Job description

At KSM, our mission is to be the strategic HR Business Partner for the companies we collaborate with, while contributing to the professional development and satisfaction of candidates’ goals.

Guided by our core values and through our personalized practices, we strive to bring employees and companies together, offering services aligned with their goals and aspirations, fostering a high-quality and innovative future.

On behalf of our client, we are seeking to recruit a:

Senior Software Engineer (Freelance)

Client Description

Our client is a leading IT Services and Software Solutions provider, delivering complex digital projects for international organizations and institutions.

Core Responsibilities

• Develop, Configure and Maintain software components
• Integrate solutions with PaaS and other components or applications
• Secure quality via unit tests and automation test scripts
• Collaborate with architecture team in the design and/or technical documentation of components or solutions
• Participate in Code Reviews, adhere to software development best practices and improve code quality standards (SDLC)

Requirements

• Bachelor’s degree in Computer Science or related field
• Minimum 10 years of experience in software development
• Strong experience (5+ years) with Java, Spring, Spring Boot
• Experience in microservices architectures
• Experience working in Agile environments
• Ability to provide technical guidance

Nice to Have

• Experience with CI/CD tools
• Knowledge of REST, GRPC, Elastic
• Experience with Cloud Native architectures
• Experience with OCP

Soft Skills

• Strong ownership and accountability
• Solution-oriented mindset
• Adaptability in dynamic environments
• Effective teamwork and communication
• Proactive and results-driven approach

Benefits

• Competitive daily rate

• Participation in high-impact international projects
• Exposure to modern technologies and large-scale systems
• Multinational and collaborative working environment
• Opportunities for long-term collaboration