Mark Klein Email & Phone Number

Montreal, Quebec, Canada

• Supported multiple Agile teams throughout feature development for Ericsson Secure Entitlement Server. Performed feasibility studies, wrote/approved design documents, debugged difficult bugs and performed code reviews..
• Interpreted telecommunication standards for Agile teams. Mapped requirements into class design.
• Wrote Agile tasks for teams and verified completion based on definition of done.
• Investigated most efficient ways of working. Proposed tools and methods to debug.
• Participated in screening and interviewing of new team members.

Montreal, Quebec

• Led the design of multiple features for the 5G User Plane Function (UPF) data plane component. Created object-oriented class designs and executed implementations in C++17 and P4. Performed networking troubleshooting in.
• Supported team by providing code reviews, design feedback and debugging advice.
• Participated in build master rotation. Was responsible for triaging new trouble tickets, diagnosing build issues, and analyzing test system failures.
• Provided customer support through live debugging sessions during product acceptance tests.
• Substituted for team-lead while on leave. Planned sprints, assigned work, and represented team in design meetings.

Montreal, Canada Area

• Worked to improve code quality and efficiency of Ericsson shopping cart. Scrum master, providing class designs, coding Java implementation, mentoring junior team members and performing code reviews.
• Drove overhaul of shopping cart logic to successful completion working with junior remote team.
• Enhanced coaching and conflict resolution skills through three-day leadership seminar.
• Improved Java code quality through the definition of SonarQube static analysis rules.
• Served as member of the shopping cart implementation architecture committee.

Montreal, Canada Area

• Acted as design lead for multiple teams of Ericsson Customer Partner Interaction (online store orchestration node) microservice. Responsibilities included: creating high-level designs, writing user stories, estimating.
• Served as final approver of test plans and Java implementations for fifty developers. Served on three-member review team.
• Accelerated time-critical integration between CPI and digital front end through participation in workshops in Sweden.
• Created Vagrant based Linux development environment facilitating new team member ramp.
• Expedited onboarding of Montreal CPI teams through mentoring and providing Git training.

• Developed and tested Call Session Control Function functionality. Implementing new CSCF features in C++, supporting existing releases, mentoring new developers and augmenting continuous integration capabilities. Worked.
• Led development of Java based orchestration tool to automate CSCF traffic testing.
• Authored Continuous Integration (CI) ways of working. Identified problem areas and chaired workshops to address them.
• Contributed to CSCF test architecture committee. Helped define test coverage and lab evolution.
• Streamlined ECIM data model transformation from two-hours to two minutes. Created Python-based tool which automated manual process.
• Participated in customer presentation of upcoming Ericsson CSCF debug functionality.

Montreal, Quebec

• Continuation of Nortel position. See Nortel description for details.

• Designed, integrated and tested Media Gateway’s functionality over many releases. Gained familiarity with G.711, G.729, AMR and EVRC-family codecs. Worked with entire Ericsson voice quality feature portfolio: AGC, VAD.
• Co-wrote TI c55x assembly implementation of EVRC-B codec which significantly increased capacity.
• Improved Mobile Echo Control for Bluetooth Echo algorithm performance. Developed new test techniques to address robustness issues encountered in previous releases.
• Designed an algorithm to alter the volume of a G.729 stream without large cost of reencoding.
• Led source control transition from Clearcase to Git. Determined best practices and trained team.
• Created framework to automate validation new Voice Activity Detector algorithms. Increased test coverage and significantly reduced test time.

Master, Electrical Engineering

•Specialization: Digital Signal Processing •GPA: 3.95/4.0 (Dean’s Honour List) •Thesis Topic: Signal Subspace Methods for Speech Enhancement

Bachelor, Electrical Engineering

•Specialization: Telecommunications •GPA: 3.50/4.0