About Hans
Experienced team lead and developer. I take ownership of a project and deliver solutions. I've led small teams as both a lead developer as well as manager, leveling up my team members to become better developers and expand their skill set.
Can work within an existing architecture or help moving to a new architecture. Designed many APIs from the ground up on AWS. Used event driven architecture to trigger many data integrations driving those APIs. Expert on all basic services in AWS such as
- Lambda/ECS/EKS for compute
- S3/DynamoDB for storage and their events
- SQS/SNS for messaging
- Opensearch/Elastic for search engines
APIs I deliver are well tested through unit tests and integration/smoke tests when needed, deployed using CI/CD if desired.
English
Native or bilingual
Dutch
Native or bilingual
French
Conversational
Remote only
Primarily works remotely
Experience
- Costar GroupSenior ManagerDIGITAL AND ITNovember 2020 - July 2025 (4 years and 8 months)San Diego, United StatesResponsibilities:
- Build out a team of developers to implement my architectures/APIs
- Deliver reusable APIs supporting all business units CoStar Group has
- Work with product owners to clarify requirements and see those through to implementation
- Validate cloud architectures for other teams
- Lead the effort to standardize deployments to AWS along with DevOps using net core
- Assist in development/adoption of in house ETL platform for data aggregation
Achievements:- Created an autonomous team of developers that can work with minimal supervision
- Built out APIs supporting homes.com launch, including supporting these for multiple SuperBowl marketing campaigns
- Generalized many cross cutting services across the organisation to reduce costs by developing them once then migrating products to those services
- Standardized deployments to AWS working with DevOps teams so they can support said deployments
- Costar GroupLead developerDIGITAL AND ITSeptember 2018 - October 2020 (2 years and 1 month)San Diego, United StatesResponsibilities:
- Lead the effort to adopt .net core and AWS
- Implement the companies' OIDC system along with the chief engineer (based on identityserver)
- Develop backend APIs for apartments.com, leveling up other developers where needed
Achievements:- .net core and the patterns/libraries developed is now the standard for all new development with AWS being the target host
- The OIDC system is now a critical piece of infrastructure for the company
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Education
- Master of Science, Software EngineeringUniversity of Amsterdam2012
Certifications
- AWS Solutions Architect AssociateAWS2022