Mark Liedtke Email and Phone Number

• Manage two engineering teams: One supporting the Candidate Profile and Search value stream, and the other tasked with replacing a legacy monolith with a modern architecture.• Lead the modernization of the Candidate Search UI with React.js, Next.js, and Tailwind, improving user experience and search efficiency.• Spearheaded adoption of backend standard transitioning from fragmented serverless solutions to containerized microservices with ECS Fargate, Express.js, Apollo GraphQL and CDK CI/CD pipelines, allowing teams to more rapidly deliver robust maintainable and scalable systems.• Led the rebuild of the Candidate Profile experience with a responsive Stencil.js UI and a scalable backend using TypeScript, AWS Lambda, AppSync and ApiGateway improving the “visible profiles” KPI crucial for driving sales.• Directed the launch of the Connect feature, streamlining recruiter-candidate communication, using a near-shore and DHI resource collaboration.

• Instrumental in delivering Pearson’s adaptive learning platform, which supports adaptive homework for collegiate math, a spaced repetition study guide and a predictive diagnostic assessment.• Co-inventor in Pearson's patented “Systems and methodologies of digital assessments” which also supports dynamic integration of new prediction models without code releases.• Developed a unified content ingestion system across multiple learning platforms, streamlining data integration.• Led migration of the Adaptive Learning data store from Cassandra to AWS RDS, reducing complexity and increasing development speed.• Implemented system health and content management tools using JSF/PrimeFaces for internal monitoring.

• Led development of TCA’s Liberty web application, transitioning from legacy technologies (Struts, Swing) to modern frameworks (JSF, Spring).• Drove the Catalyst Initiative, adding CRM functionality, sales analytics, and DocuSign eSignature integration to the platform.• Introduced and championed Agile development processes, establishing Jira and Confluence for project management and collaboration.

• Designed and maintained the MyCHI Employee Portal for 35,000 employees, improving cross-facility collaboration and document sharing.• Early adopter of Agile methodologies, implementing Atlassian Jira and Confluence for project tracking and collaboration.

Worked for clients in finance, telecoms and healthcare industries building and supporting business applications.

Worked with clients in finance, telecom, and healthcare, delivering business applications with a focus on technical solutions that meet complex business needs.

Member of the Quality Assurance department, responsible for testing new systems and changes to existing systems. The project started as a college Co-Op program that developed into a full-time position as a senior member of the team.