Application Architect

Isabel Group

Brussel

Hybrid

EUR 90,000 - 120,000

Full time

5 days ago

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Benefits offered by this job

Hybrid work option

Flex income plan

Annual bonus

Insurance

Meal vouchers

Job summary

Isabel Group in Belgium seeks an Application Architect to contribute to the Verified Data domain. You will shape solution designs, promote architecture documentation as code using the C4 model, and guide delivery teams without hands-on coding.

You will analyze legacy and modern systems, drive modernization roadmaps, and ensure alignment with technology strategy. Fluent in English and Dutch or French, you will communicate with stakeholders across departments and influence architecture decisions

Qualifications

Experience in architectural design patterns, microservices and scalable system architectures.
Proven ability to reduce technical debt and improve system reliability.
Track record in reliability engineering and performance optimization.
Understanding of security best practices and governance guidance.
Familiarity with cloud platforms, IaC, containers and orchestration tools.
Ability to explain complex concepts to non-technical audiences and collaborate across teams.
Adaptability to different development and project management methodologies.
Ability to analyze complex systems and guide modernization roadmaps.

Responsibilities

Gather requirements and synthesize into unified solution designs.
Promote architectural proposals and maximize project value.
Lead during initiation and support delivery teams as architectural lead.
Ensure solutions align with technology strategy and governance.
Document architecture thoroughly for stakeholders and future work.
Stay current with technology trends to drive innovation.
Identify modularity improvements and assess dependencies without coding.
Deconstruct legacy and modern systems to inform design decisions.

Skills

Architectural patterns

Microservices architecture

System architectures

Reliability engineering

Performance optimization

Security best practices

Cloud computing platforms

Infrastructure as code

Containerization

Orchestration technologies

Cross-functional communication

Job description

Let’s shape the future of finance - together

At Isabel, we believe that real innovation happens when people and ideas connect

That’s why we’re building more than technology, we’re building an ecosystem.

One where every voice counts, and where your work can truly make a difference.

We’re looking for curious minds and collaborative builders. People who believe success means growing together, learning from each other, and challenging the status quo.

If that sounds like you, keep reading.

As Application Architect you will be part of our Architecture team, with a specific focus on one of our domains: the Verified Data application landscape.

You’ll contribute to solution designs that meet both business and technical objectives, ensuring alignment with Isabel’s long-term vision. In addition to contributing to design and review activities, you’ll actively promote architecture documentation as code, using the C4 model to describe software systems at multiple levels of abstraction. This ensures that documentation remains accurate, version-controlled, and aligned with the development lifecycle, while fostering transparency and knowledge sharing across teams.

What you’ll do

Engage actively with all relevant parties to gather comprehensive requirements — encompassing user, technical, and performance specifications — and synthesize these into unified solution designs.

Champion your architectural proposals, striving to achieve excellence in fulfilling stakeholder needs and maximizing the value of project outcomes.

Take the helm during the project's initiation phase and provide ongoing leadership and expertise to the delivery teams throughout the execution phase, serving as the project's architectural lead when necessary.

Ensure that the proposed solutions are aligned with the overarching technology strategy and comply with corporate governance standards.

Cultivate a practice of thorough documentation, guaranteeing that it is a true and clear reflection of active operations and is readily understandable and available to stakeholders.

Stay abreast of technology trends to drive innovation and continuous improvement within the application domain.

Propose architectural patterns, assess modularity and dependencies, and identify improvement areas — without participating in hands-on development.

Understand and deconstruct legacy and modern systemsto inform design decisions, guide modernization efforts, and propose architecture roadmaps.

What makes you a great fit

This role is ideal for someone who can analyze and understand complex, large-scale applications independently — not to develop them, but to extract architectural insights, assess design quality, and support strategic evolution of our application ecosystem.

You’ll thrive in this role if you:

have experience in architectural design patterns, microservices architecture, and creating system architectures that are scalable, resilient, and aligned with business needs.

are able to identify, quantify, and strategize the reduction of technical debt.

have a track record in reliability engineering & performance optimization.

have an understanding of security best practices (you’ll be supported by a Security Architect).

have an understanding of cloud computing platforms, infrastructure as code, containerization, and orchestration technologies (you’ll be supported by a Infrastructure Architect).

Capable of analyzing how data storage, access, and integration are handled in enterprise systems, particularly in high-availability financial environments.

can effectively communicate complex technical concepts to non-technical people and work with various departments to understand their needs and constraints.

have the ability to adapt to and work with various development and project management methodologies.

are able to explore and understand unfamiliar, complex systems with minimal guidance, especially through source code and system documentation.

Are fluent in English AND Dutch or French.

Why join us

At Isabel, we offer more than a job, we offer a place to grow, contribute, and thrive.

A human-sized Belgian company (250 people) where your ideas and impact matter

50% hybrid work, flexible hours, and autonomy to manage your time

Coaching, training, and tailored development paths for every career stage

A flat, collaborative structure with real ownership and cross-functional work

Competitive rewards: Flex Income Plan, annual bonus, insurance, meal vouchers

A strong engagement culture and inclusive mindset

Easy mobility options: our MOBI strategy supports flexible, low-footprint commuting, whether by bike, public transport, or electric car
Professional gatherings that encourage collaboration and networking, as well as fun and purposeful activities led by our BeFun team