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Open to workDesired Job Title
Security EngineerSenior Back-End DeveloperBackend DeveloperIAM ConsultantWork Type
Full TimeLocation Preference
RemoteHybridLocation: Wroclaw, Poland
Open to relocation: Yes
Open To Work
Kajetan Parzyszek
Wroclaw
Work Preference
Summary
As a Senior Backend Developer at IAM, I work on identity governance and administration, identity provider, and authentication/authorization/session backend applications, using technologies such as C++, Java, Python, OAuth, OpenID Connect, UMA, SCIM, FIDO 2.0, MFA, JWT, Consul, Vault, and Nginx. I enable and support the identity provisioning and authentication for hundreds of thousands of users on a daily basis, ensuring security, scalability, and performance.
In recent years with HSBC I've grown my knowledge of cloud based services with technologies like Kubernetes, GCP, Cloud Build, Terraform and all the range of Google Cloud products. I've had a chance to work with software from vendors like ForgeRock and Splunk/AppDynamics implementing, integrating and expanding upon their whole set of products.
I graduated from Politechnika Wrocławska with a degree in Informatyka in 2019, and I hold a CCNA R&S certification from Cisco. Before joining IAM, I gained valuable experience in various backend development projects, such as C++ embedded software for leak detection systems, Python Django web application for dating, and Java API development for video playlists and web games. I enjoy working on challenging and diverse projects that allow me to apply and expand my skills and knowledge. I am motivated by learning new technologies, solving complex problems, and creating positive impact through my work.
Overview
7
7
years of professional experience
Work History
Security Engineer
HSBC
Cracow, Poland
11.2023 - Current
- (IGA) Identity Governance and Administration configuration development, integration and support [OpenIDM, Java, RBAC]
- (IAM) Identity Provider backend application development, integration and support [OpenAM, Java, SQL, Databases]
- (IAM) Identity Provider related integrations [OAuth 2.0, OpenID Connect, MFA, JWT, SSO, Zero Trust]
- CI/CD development and usage [Jenkins, GitLab Runner, Cloud Build, Ansible, DevSecOps]
- On-premise and Cloud development and deployment [GCP, GKE, VMs, Cloud Build, Terraform, Servers, Secrets - HashiCorp Vault, GCP Secret Manager]
- Ticketing system development and maintenance [JavaScript, Node.js, Kanban, ServiceNow ITSM]
- Monitoring setup - development, deployment, configuration and support [AppDynamics, OTEL, Splunk, Kafka]
- SRE operations support
- API Gateway and reverse proxy setup [Nginx/Nginx+, Load Balancing, SSL/TLS, Rate Limiting]
- AI assisted development [Claude, Copilot, Skills, MCP]
Senior Back-End Developer
ICrypto, Inc.
Remote
10.2020 - 08.2023
- (IGA) Identity Governance and Administration backend application development, integration and support [Java, CXF, Groovy]
- (IGA) Multiple to One data aggregation of various systems/databases [MySQL, Oracle, PostgreSQL, Couchbase, Redis, Azure, REST, LDAP]
- (IAM) Identity Provider backend application development, integration and support for SSO workflow [Java, JSF2]
- (IAM) Identity Provider related integrations [OAuth 2.0, OpenID Connect, UMA, SCIM, FIDO 2.0, MFA, JWT]
- Microservices based authentication/authorization/session backend applications development - [Java, Spring Boot, Docker]
- User data and information reports [Python, ELK, Kibana/Grafana]
- Securing configuration and secrets [Consul, Vault]
- Nginx plus as gateway and authorization provider
Backend Developer
Sagiton
Wroclaw, Poland
01.2019 - 10.2020
- Embedded application development for leak detection systems [C++, Yocto]
- Backend development for dating application [Python, Django]
- Backend API development for embeddable video playlists player and manager [Java, Spring Boot]
- Backend API development for Christmas game application used as store promotion [Java, Spring Boot]
Education
Bachelor of Science - Informatics
Wrocław University of Science And Technology
Wrocław2019
Associate Cloud Engineer Certification -
Google Cloud Skills Boost
07-2024
CCNA R&S: Introduction -
Cisco
2019
Skills
- IAM/IGA/PAM - Gluu, ForgeRock/Ping Identity, Keycloak
- OAuth 20, OIDC, MFA, JWT, SSO, SCIM, FIDO 20, UMA
- Java - Spring Boot, CXF, JSF2, microservices, Docker
- CI/CD - Jenkins, GitLab Runner, Cloud Build, Ansible
- DevSecOps - GCP, GKE, VMs, Cloud Build, Servers
- Monitoring - AppDynamics, OTEL, Splunk, Kibana, ELK
- Proxying - Nginx, Load Balancing, SSL/TLS, Rate Limiting
- Secrets Management - HashiCorp Vault, Consul, GCP Secret Manager
- Databases - SQL, MySQL, Oracle, PostreSQL, Couchbase, Redis, LDAP
- AI - Claude, Copilot, Skills, MCP
Timeline
Security Engineer
HSBC
11.2023 - Current
Senior Back-End Developer
ICrypto, Inc.
10.2020 - 08.2023
Backend Developer
Sagiton
01.2019 - 10.2020
Associate Cloud Engineer Certification -
Google Cloud Skills Boost
Bachelor of Science - Informatics
Wrocław University of Science And Technology
CCNA R&S: Introduction -
Cisco