Sogeti and ASN Bank Optimise IT Observability

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July 28, 2025

As a banking organization with a strong focus on customer-friendliness, reliability is essential—communication with customers, internal processes, and transactions must run smoothly and without errors. This demands robust IT systems that are always operational.

About ASN Bank

As the parent company of SNS, RegioBank, and BLG Wonen, ASN Bank serves around 3 million customers with mortgage, payment, and savings products. Headquartered in Utrecht, the bank is known for its strong social impact and commitment to sustainable, customer-friendly service.

Monitoring and problem analysis with the observability platform

As a banking organization committed to customer-friendliness, reliability is critical for ASN Bank. Smooth, error-free communication, transactions, and internal processes all depend on high-performing IT systems that are consistently available.

To support this, ASN Bank established a dedicated Observability Team. This team empowers other departments to monitor the performance of the IT stack and conduct in-depth problem analysis using the Observability Platform. Beyond monitoring, the team provides strategic guidance on optimizing the use of various technologies, manages the platform infrastructure, and trains employees to use it effectively.

By enabling better visibility into workloads and fostering proactive responses to disruptions, the Observability Team plays a key role in maintaining operational excellence and enhancing the customer experience.

Strengthening a young observability team

ASN Bank was in search of the ideal composition for its young Observability Team. The team needed additional expertise and stronger collaboration. Replacing retiring members proved difficult, and the lack of cohesion impacted overall performance.

To turn the tide, ASN Bank sought an IT partner who could not only enhance the team’s capabilities but also quickly onboard new members when needed—individuals with the right technical skills and a strong cultural fit.

Client: ASN Bank

Region: Netherlands

Industry: Banking and Financial Services

Offer: Quality Engineering

Sogeti’s impact at ASN Bank:

– Short lines of communication
– Sound advice on the technology to use
– Well-functioning Observability Platform

Sogeti delivers T-shaped engineers

Sogeti responded swiftly, providing T-shaped engineers with deep knowledge of technologies such as cloud, Kubernetes, Prometheus, and Grafana. Beyond technical expertise, Sogeti brought the experience needed to help team members use the Observability Platform effectively and elevate the team’s maturity.

“We wanted the team to become a close-knit collective. That put extra pressure on Sogeti. After all, the team members not only had to have the right knowledge and skills, but there also had to be a cultural fit. Because we were able to switch quickly with Sogeti and were on the same page, we succeeded in finding the right people and setting up a great team.”
Jeroen van de Pol, Lead | Product Owner Observability & SRE, ASN Bank

Sogeti and ASN Bank: building a high-performing observability team

To ensure a strong cultural fit and effective collaboration, ASN Bank expanded its Observability Team step by step. Close cooperation with Sogeti was key. Together, they held in-depth discussions to define the ideal team structure—focusing not only on technical expertise but also on team dynamics and cultural alignment. The collaboration was smooth and agile. With short communication lines and proactive input from Sogeti’s Lead Engineer, ASN Bank received valuable guidance on shaping the team vision with the right mix of technology and talent. Thanks to the strong rapport between Sogeti engineers and internal staff, the team evolved into a cohesive unit that shares feedback openly and works seamlessly together.

Improved IT stack stability

The impact of the enhanced Observability Team is clear. The IT organization now has greater visibility into its landscape. Issues are detected immediately through accurate monitoring and intuitive dashboards, enabling rapid resolution.

Through infrastructure optimization, proactive monitoring, and refined alerting, the stability of the IT stack has significantly improved—resulting in reduced downtime and more efficient use of IT resources. For example, optimized data inflow has led to more accurate and efficient data collection. These improvements have also contributed to notable cost savings.

Empowering users through training

Beyond managing the Observability Platform, the team is actively involved in user enablement. By guiding and training internal teams, they help users get the most out of the platform. Looking ahead, the team will increasingly focus on this role—offering workshops and supporting business teams in building robust monitoring applications that integrate with the platform.

“ASN Bank needed a strong and well-cooperating Observability Team, and we’re proud to have made a difference. Sogeti not only delivered the right expertise but also helped grow and professionalize the team. Thanks to our joint efforts and cultural fit, ASN Bank now benefits from better IT visibility, more efficient monitoring, and a future-proof IT environment.”
Jaap-Joris van der Lek – Senior Client Manager, Banking, Sogeti