Senior Java / Angular Developers (Expert)

Keystone Solutions is recruiting an Expert Business Developer / Strategist to join a consultancy mission with our client, a major public-sector administration in Brussels. The engagement is part of a large-scale modernization initiative transforming a legacy monolithic application into a modern, API-first and event-driven microservices architecture running on Kubernetes. Beyond technical modernization, this is also a business transformation program: it enables the development of new features, improves agility, and accelerates the delivery of value to internal and external end users. By building a more flexible and scalable digital platform, the program supports better services, an enhanced user experience, and faster adaptation to evolving business and regulatory needs. As a Keystone Solutions consultant, you will carry out the responsibilities below in close collaboration with the client's teams.

• Consultancy nature of work: You will operate on site at the client's location as a Keystone Solutions consultant, embedding with client stakeholders (business leads, product owners, architects, and engineering squads) to co-create outcomes while representing Keystone's standards and values.
• Dynamic projects: You will tackle diverse challenges across modern API-first and event-driven domains, microservices design, legacy-to-modern transitions, DevOps enablement, and observability—building a portfolio of achievements that spans multiple client engagements over time.
• Turbo-charged learning and development: Keystone Solutions invests in your growth through coaching, expert communities of practice, certifications, and curated learning paths so you can broaden and deepen your skills across strategy, delivery, and technology.
• Ambition skyrocketing within a consultancy framework: Varied client contexts accelerate your progression, with clear pathways to lead consultant, solution architect, and engagement leadership roles while staying hands-on with impactful transformation work.

• Expert Business Developer / Strategist — Most recent experience: Any time

• →Partner with business and IT stakeholders to shape and refine the modernization roadmap, aligning business capabilities to an API-first and event-driven microservices architecture.
• →Elicit, analyze, and challenge requirements; translate them into clear domain boundaries, event models, and API specifications that guide delivery squads.
• →Bridge strategy and execution by coordinating closely with product owners, architects, developers, and DevOps engineers to ensure incremental value delivery and measurable outcomes.
• →Support the progressive replacement of legacy components, ensuring continuity of service, data integrity, and controlled risk during migration.
• →Champion engineering excellence across topics such as version control, CI/CD, observability, and quality practices, leveraging tools like GIT, ELK tools, and the Atlassian suite.
• →Communicate effectively across business and technical audiences, facilitating decision-making and transferring knowledge to uplift client teams' competencies.
• →Contribute to compliance, security, and operational readiness in a public-sector context, aligning with regulatory requirements while improving user experience.
• →Operate as a Keystone Solutions consultant, bringing our values and consulting rigor to every interaction while delivering the client's objectives.

• Angular — Level: Expert — Most recent experience: Any time
• API resr — Level: Expert — Most recent experience: Any time
• atlassian suite — Level: Expert — Most recent experience: Any time
• Communiquer et transmettre des connaissances — Level: Expert — Most recent experience: Any time
• DB2 — Level: Expert — Most recent experience: Any time
• DevOps — Level: Expert — Most recent experience: Any time
• ELK tools — Level: Expert — Most recent experience: Any time
• GIT — Level: Expert — Most recent experience: Any time
• IntelliJ — Level: Expert — Most recent experience: Any time
• Java — Level: Expert — Most recent experience: Any time
• Linux — Level: Expert — Most recent experience: Any time
• netbean — Level: Expert — Most recent experience: Any time
• SCRUM — Level: Expert — Most recent experience: Any time
• Spring Boot — Level: Expert — Most recent experience: Any time
• Visual studio — Level: Expert — Most recent experience: Any time
• Weblogic — Level: Expert — Most recent experience: Any time
• Windows — Level: Expert — Most recent experience: Any time

• Dutch or French — Level: Nice to have
• English — Level: Active knowledge

• Main address: Brussels 

• Client impact first: We focus relentlessly on outcomes that matter for users and the organization.
• Pragmatic excellence: We balance architectural vision with delivery pragmatism to ship value early and often.
• Ownership and transparency: We act as accountable partners, communicating clearly and earning trust at every step.
• Learning mindset: We continuously learn, share, and elevate client teams—being a K-Stone means bringing these values to every project.

If you are ready to tackle technical and strategic challenges in a dynamic consultancy environment, apply today at Keystone Solutions Career Portal.