Senior Developer Technical Lead

Wilson & Sterling Consulting; Brussel; Hybrid; EUR 92,000 - 148,000; Part time

Job summary

Wilson & Sterling Consulting seeks an experienced Technical Software Developer Lead for a multi-year freelance contract. The role is delivered 2 days a week from Brussels and 3 days remotely, with responsibilities spanning architecture, backend development, and technical leadership.

You will coach Java developers, conduct code reviews, and collaborate with Product Owners to translate requirements into scalable solutions while ensuring high quality and secure practices.

Qualifications

• Experience designing and overseeing Java application architectures.

Responsibilities

• Design and oversee technical architecture of Java applications.

Skills

Java

Backend development

Technical leadership

Code reviews

Mentoring

Requirements analysis

Product Owner collaboration

Tools

GlassFish

WildFly

ActiveMQ/OpenMQ

ESB

SOAP/RMI/REST

RESTful Web Services

Maven

Jenkins

Bitbucket

Octopus

Kubernetes

Docker

SSMS

Eclipse/IntelliJ

ReadyAPI

SonarQube

OWASP ZAP

Spring Security

Job description

Our client, a leading healthcare Insurer are looking for a an experience Technical Software Developer Lead. This will be a Freelance contract, multiyear , delivered 2 days a week from Brussels, 3 days remote.

• Design and oversee the technical architecture of Java applications
• Develop robust and scalable backend solutions (hands-on)
• Lead technical decision-making and ensure high code quality
• Perform code reviews and resolve complex technical challenges
• Coach and mentor Java developers within the team
• Collaborate with Product Owners and stakeholders to translate requirements into technical solutions
• Contribute to the continuous improvement of processes, tools, and technologies

Contribute to and validate the functional analysis and specification of requests for IT developments :

• Realize IT projects according to approved functional specifications and within the approved budget and planning.
• Conduct code reviews and follow up release management.
• Develop new programs or adapt existing programs in respect of the existing standards.
• Test new developments before submitting them to the key user for user testing
• Document his/her realisations.

Maintain and improve existing IT applications :

• Handle all incoming requests related to the applications you're responsible for (Tickets).
• Correct bugs in the applications you're responsible for.
• Analyze root causes of frequent problems and propose fundamental solutions.
• Realize approved improvements. Maintain user and technical documentation

Support business users in the usage of the existing IT applications :

• Define the required availability levels and response times with the business owners.
• Elaborate support procedures, with escalation to external parties where appropriate.
• Measure and report the achieved availability levels and response times.
• Assist users in the improved usage of the existing applications.

Requirements :

• SQL Server Application Server: Glassfish 3.1, Wildfly
• ActiveMQ / OpenMQ
• Montova ESB
• SOAP / RMI / (REST)
• RESTful Web Services: Creating and consuming REST APIs
• Concurrency and Multithreading: Managing multiple threads and processes

Release Management / Software delivery:

• Maven
• Jenkins Git
• Bitbucket
• Octopus
• Kubernetes (optional, but a plus)

Tools

• SoapUI, IDE: Eclipse/IntelliJ SSMS Docker / Docker Compose (optional, but a plus) ReadyAPI Additional skills
• Security: Understanding of security protocols and best practices

Security Requirements - Secure Coding Practices:

• Proficiency in writing clean, secure, and maintainable code to protect against common vulnerabilities such as SQL Injection, Cross-Site Scripting (XSS), Cross-Site Request Forgery (CSRF), and others as outlined in the OWASP Top Ten.
• Authentication and Authorization: Experience implementing secure authentication mechanisms (e.g., OAuth, JWT, SAML) and managing user roles and permissions effectively.
• Data Protection: Knowledge of data encryption methods both at rest and in transit, and experience using libraries or frameworks to implement encryption (e.g., JCA, Bouncy Castle).
• API Security: Strong understanding of securing RESTful APIs and SOAP services, including rate limiting, input validation, and implementing API gateways.
• Dependency Management: Experience with managing third-party libraries and dependencies securely, including staying updated with security patches and vulnerability assessments.
• Security Tools and Frameworks: Proficiency with security tools and frameworks such as Spring Security, and familiarity with static and dynamic analysis tools (e.g., SonarQube, OWASP ZAP). Compliance and Standards: Understanding of industry standards and regulations (e.g., GDPR, PCI-DSS) and how to implement these requirements in software development.