Tom H. Klemzak

Curated Deliverables:

• Produced logical architectural blueprints detailing improved UX/UI customer journey, integrations with SnapLogic and Informatica, increased security - both at-rest and over-the-wire, and improved database performance by sharding and denormalizing tables.
• Defined sync/async API services to strangle monolithic systems while minimizing JSON payload sizes.
• Identified caching gaps and introduced Akamai client-side caching and Redis database caching.
• Detailed Azure-based HA/DR physical architecture topology supplanting on-prem envs improving scale and uptime.
• Detailed bi-directional failover and failback using asynchronous commits with snapshots and log shipping.
• Collaborated with client to define merchant service APIs based on ODATA standard to be consumed by franchises.

• Conceptualized new technical architecture requirements into numerous future state architectural diagrams, including Infrastructure-as-a-Service (IaaS), Service Mesh, Informatica and Snowflake.
• Reviewed and integrated all application requirements, including functional, and NFRs (security, integration, performance, quality and operations requirements).
• Provided input into final decisions regarding hardware, network products, system software and security while considering systems being decommissioned.
• Plus one activity involved being sysadmin for numerous AWS EC2 instances used for competitive intelligence.

• Using an event driven architecture (EDA) model, produced AWS Kafka (MSK) and Apache Spark (Elastic MapReduce) application content diagram showing how Kafka events would be enriched before publish into data lake.
• Produced comprehensive future state blueprint showing how enriched streaming data is to be used for A/B testing and later BI analysis to justify new LOB.
• Created video streaming architectural diagrams illustrating how server-side A/B testing tool (Optimizely) is to integrate into client's existing tech stack.

• Used Swagger/Open API standard to design REST-based CRUD transactions and make JAX-RS modifications to existing Hybris product configuration APIs exposing data to a new user base.
• Managed an offshore team to implement and test extensive API re-development (as it was beyond GraphQL scope) ensuring JSON reponse data was more modularized to serve both Salesforce Lightning/Aura components and a React frontend.
• Instrumental in providing federated access using SSO for IAM and authorization.
• Published runtime artifact explaining the physical, logical and operation of the product variant configuration APIs.

• Modified SAP Hybris front-end controller classes to accommodate B2B pricing availability changes.
• Used the Hybris native web CMS tool to assist in the design and implementation of front end assets.
• Enhanced/modified business logic in SAP Hybris DTO Facade class types.
• Helped resolve retrieval and parsing of service and database data within SAP Hybris DAO class types - using Splunk and Dynatrace.
• Created object, permissions and personalization rule additions and modifications via impex files.

• Cited current state QA testing process gaps produced and communicated plan to reach future state and congruence with client's offshore teams.
• Conceptualized and helped create development portal feedback submission tool used for Hackathon event.
• Produced and circulated user story acceptance criteria best practices document effectively ensuring business requirement to test result traceability submitted document to KX.
• Collaborared with team to integrate with Mulesoft ensuring ecosystem APIs were using their Anypoint platform.
• Assisted with both API and FED testing efforts leading up to Hackathon event.

• Elicited and vetted requirements in the context of OOTB functionality and new development while maximizing existing technological Salesforce investments.
• Proposed design changes to Salesforce B2B Commerce logical architecture and data model to support new business functional requirements concerning product entitlements.
• Shaped and defined how static Drupal marketing site is to consume and produce API endpoint data as a wrapper site to the B2B checkout process.
• Reviewed and integrated all application non-functional requirements.

• Reviewed all SAP Hybris and FED content pull requests for all MVC-related code to enhance the site, or resolve issues.
• Created at least one Jenkins build a day consisting of 40+ merge candidates deployed to several lower envs (LEs) after merge conflict resolution, and successful completion of stage/gate criteria.

• Accountable for producing current state assessment after meeting with stakeholders.
• Responsible for selecting ElasticPath - a headless eCommerce Java-based platform to fit into T-Mobile's landscape.
• Instrumental in simplifying plan pricing; better accomodating users who want a phone and have a plan, and for those that have a plan but want a phone.

• Instrumental in obtaining client deal by demoing Adobe Commerce; discussed how Adobe Commerce is to operate on their existing LAMP stack.
• Prescriptively designed future state logical enterprise architecture diagram illustrating Adobe Commerce consuming and publishing data to other systems within their landscape.

• Accountable for creating traceability matrix tracking requirements to SAFe user stories to QA test cases.
• Shared and executed requirements decomposition techniques after receiving business, functional and non-functional requirements from client.
• Used process mapping, optimization, flow-charting, swim lane diagrams, BPA/BPM software/tools.
• Created value maps for current and future state.
• Transitioned to QA lead and helped design QA process; helped conduct end-to-end testing.