IT Techlead Developer Consultant

Keystone Solutions; Brussel Hoofdstad; Hybride; EUR 90 000 - 120 000; Plein temps

Avantages offerts par ce poste

Career growth

Diverse client projects

Professional development

On-site client work

Keystone Solutions values

Résumé du poste

Keystone Solutions is seeking an experienced IT Techlead Developer to join the client site in a multidisciplinary Agile Scrum squad. You will lead backend development, shaping architecture, design decisions and production readiness while collaborating with product owners, analysts and operations.

The role emphasizes hands-on Java (Java 8+), Spring, Kafka and Flink, with a focus on maintainable, secure, scalable solutions within the Invest domain. 50/50 on-site and homeworking is expected.

Qualifications

• Must have at least 6 years of senior hands-on software engineering in a complex enterprise environment.
• Deep backend expertise with proven technical leadership.
• Ability to guide experienced developers while contributing to the codebase.

Responsabilités

• Act as the squad’s hands‑on Technical Lead and technical reference point.
• Set and communicate a coherent technical direction for the squad.
• Facilitate technical design and collective decisions across the development team.
• Ensure alignment with architecture, security and operational expectations.
• Establish consistent practices for clean code, peer review, automated testing, documentation, observability and production readiness.
• Identify dependencies, technical risks and technical debt early, and drive pragmatic follow‑up.
• Support production incident analysis and convert lessons learned into improvements.
• Coach developers, encourage knowledge sharing and strengthen shared ownership.
• Contribute directly to complex implementation work while retaining squad‑wide technical oversight.
• Maintain a forward‑looking view of application maintainability, stability and technical evolution.

Connaissances

Java

Backend architecture

Technical leadership

Agile/Scrum

English communication

Formation

Bachelor or Master in IT

Outils

Spring 4

Spring Boot

Kafka

Flink

SQL

Maven

Jenkins

Git

JUnit/Cucumber/WireMock

Description du poste

Mission Overview:

The consultant will join Keystone Solutions as an IT Techlead Developer, working on-site at the client within a multidisciplinary Agile Scrum squad in the Invest environment. This consultancy mission involves developing and maintaining backend applications and integrations supporting investment-related customer journeys.

Responsibilities:

• Act as the squad’s hands‑on Technical Lead and technical reference point.
• Set and communicate a coherent technical direction for the squad.
• Facilitate technical design and collective decisions across the development team.
• Ensure alignment with architecture, security and operational expectations.
• Establish consistent practices for clean code, peer review, automated testing, documentation, observability and production readiness.
• Identify dependencies, technical risks and technical debt early, and drive pragmatic follow‑up.
• Support production incident analysis and convert lessons learned into improvements.
• Coach developers, encourage knowledge sharing and strengthen shared ownership.
• Contribute directly to complex implementation work while retaining squad‑wide technical oversight.
• Maintain a forward‑looking view of application maintainability, stability and technical evolution.

Agile Requirements:

• Work effectively in a multidisciplinary Agile Scrum squad.
• Support sprint delivery without losing sight of solution quality and longer‑term needs.
• Collaborate closely with Product Owner, Scrum Master, analysts, testers, architects, operations and other delivery teams.
• Make technical topics, choices and risks visible to the squad.
• Promote shared ownership, knowledge transfer and continuous improvement.
• Challenge priorities or solutions constructively when quality, security, stability or maintainability is at risk.

Required Experience / Knowledge:

• At least 6 years of relevant experience in senior hands‑on software engineering within a complex enterprise environment.
• Deep backend expertise with proven technical leadership.
• Ability to guide experienced developers while contributing to the codebase.

Technical Experience (Mandatory):

• Strong hands‑on Java development experience, including Java 8.
• Strong experience with Spring 4 and Spring Boot.
• Experience with backend applications, REST APIs and integration patterns.
• Experience with Kafka and Flink.
• Experience with SQL and Java database access.
• Experience with Maven, Jenkins and Git.
• Experience with automated testing using JUnit, Cucumber/Gherkin and WireMock.
• Strong understanding of application architecture, middleware, infrastructure dependencies and operational constraints.
• Working knowledge of secure development practices, code quality and production support.
• Ability to guide technical design, code review, testing and release readiness across a team.

Technical Experience (Preferable):

• Experience with Lombok, HttpEntity/ResponseEntity, Groovy scripting for Jenkins pipelines, IntelliJ and Octane.
• Experience integrating distributed, mainframe and infrastructure components.
• Experience improving observability, performance, resilience or production stability.

Business Experience (Mandatory):

• Experience as a Technical Lead or technical reference in an Agile software delivery team.
• Experience coordinating technical decisions across developers and with architecture, security and operations.
• Experience managing dependencies and delivery risks in a complex application landscape.
• Experience improving engineering practices while delivery is under pressure.
• Experience in a controlled enterprise environment.

Business Experience (Preferable):

• Experience in banking, financial services or another regulated environment.
• Knowledge of the Invest domain or investment‑related digital solutions.
• Practical Scrum experience.

Soft Skills:

• Strong technical credibility and sound judgement.
• Clear communication with technical and non‑technical stakeholders.
• Able to align and influence experienced developers without hierarchical authority.
• Pragmatic when balancing engineering quality, delivery constraints and business priorities.
• Constructive when challenging decisions and proactive in raising risks.
• Team‑oriented, with a focus on shared ownership and knowledge transfer.

Assignment Focus:

• Provide squad‑wide technical direction rather than owning one isolated workstream.
• Keep architecture, security, maintainability, technical debt and production stability visible in delivery decisions.
• Combine hands‑on contribution with continuous oversight of the complete solution.
• Help the squad become technically stronger and more autonomous.

Language Requirements:

• Sound working knowledge of English is required for daily collaboration, technical discussion and documentation.
• Dutch and French are a plus.

Education:

• Bachelor or master degree in IT, engineering, computer science or equivalent professional experience.

Certification:

• Relevant technical, architecture, security or Agile certifications are an advantage.

Travel:

• No regular travel expected.

Telework:

• Expectation: 50% on site and 50% homeworking, according to the applicable team arrangements.

Keystone Solutions Advantages:

• As a consultant, you will represent Keystone Solutions on‑site, bringing our core values to every engagement.
• Experience dynamic projects and diverse challenges across various client environments.
• Benefit from turbo‑charged learning and professional development opportunities.
• Skyrocket your ambition with clear career growth within Keystone Solutions’ framework.
• Being a K-Stone means delivering excellence, integrity, and innovation in every mission.