Mihai Constantin Email & Phone Number

Berlin Area, Germany

- I have heavily contributed to the development of a cloud-native component for firewalling and load balancing with wire speed performance. Tasks included: message processing, metrics and monitoring, configuration, gRPC api. (C/C++, SCTP, gRPC, bash, prometheus, docker, DynamoDB, Go).- I have developed tools for stress testing. Fast SIGTRAN message generators were hard to come by, so we wrote our own (stateless) tool to quickly break down packet captures, load data in batches and use it to stress test the load balancer (C/C++, Bash, LUA).- I have developed tools for CI/CD (AWS codebuild, AWS codepipeline, Jenkins, Terraform, Packer, ansible).- I have contributed on a project for GTP tunneling, also cloud native. (C, Go, vpp, ECS, AWS scaling groups, AWS lambda).- I have developed a wrapper library around Hashicorp's Serf. Serf does service discovery, but we wanted some features on top, like customizable watchers or master election (Go).

Berlin Area, Germany

- I have worked on a Key-Value database for an LTE Diameter Routing Agent. The work consisted of writing the CRUD api and an encoder/decoder (akin to protobuf) for the messages sent over the wire (C/C++). - While working there I had to configure and install Network-Wide, Linux based systems from scratch (Linux, bash). - I have done end to end testing using various testing tools or hardware. This involved System/Network debugging for extensive code-bases (perl, lua, bash).- Worked on a project to create a sandbox environment in perl for our C/C++ backend (perl, C/C++). - System/Network debugging for extensive code-bases.

Berlin Area, Germany

- Back-end features for the Diameter protocol. Work consists of LTE Core Network Signalling and Signal Processing (C/C++, SCTP, TCP, Diameter).- Front-End features for configuring and monitoring the Signalling Processing features (Javascript, php).- System/Network testing on Linux based frameworks.

- System and network programming. (Linux, C, bash, sctp, tcp)- Implemented protocol stacks for the 3G Core Network. (3GPP protocols: BSSGP, M3UA, SCCP), as well as some protocols required in the edge of the network: (Gb, IuPS) and IETF protocols. (RFC 2915, RFC 6408)- Configured and installed various Core Network components. E.g.: virtual machines running Linux, 3G access points. (VMware, Ubuntu, Fedora, CentOS)- End to end testing on a complex Core Network infrastructure (5+ virtual machines) using various hardware components (User-end devices and 3G Access points).

Master Of Engineering - Meng, Signalling And Data Processing

Bachelor Of Engineering - Be, Systems Engineering