• Deployed and maintained various environments for a tenant of our platform solution, which is based on Amazon EKS, Amazon RDS, Terraform, Hashicorp Vault, GitLab CI, Helm, Prometheus and Grafana.

• Investigated issues experienced by the tenant and resolve them as appropriate.

• Improved the platform solution itself by investigating and fixing bugs, implementing new features, and updating the documentation.

• Took over a major security system with most of it running on Kubernetes.

• Imported code repositories into GitLab and configured CI/CD pipeline on them.

• Enabled automatic exportation of secrets stored in AWS Secrets Manager into Kubernetes secrets.

• Built various Docker images and automated such builds as part of CI/CD pipelines. Deployed various apps into Kubernetes.

• Collaborated with the team, building architectures and making them available to other teams.

• Took charge of short-term tasks related to designing, implementing, and maintaining cloud architectures for various products used within HMRC.

• Involved with tasks for on-premise infrastructure as well.

• Modernized the architecture of ArkCase, a case management system. The architecture was monolithic, with ArkCase and half a dozen dependent services running on the same server.

• Moved to a modern architecture based on Kubernetes, microservices, and Infrastructure-as-Code. Additionally, helped the company build an AWS Marketplace offering for ArkCase.

• Dockerized various services and wrote Helm charts for various services.

• Secured the Kubernetes cluster using network policies and RBAC and installed and configured Istio and observability tools. Built an internal PKI using CloudFormation.

• Performed various system administration tasks, especially related to SSL certificates.

• Dockerized the Ruby-on-Rails web application in order to facilitate deployments.

• Designed and implemented a MySQL NDB cluster in order to increase the database resiliency.

• Designed a highly available, microservice-based cloud architecture for the SIBOTest website.

• Designed, implemented, and tested a back-end microservice in Python 3.6 running on Elastic Beanstalk in AWS.

• Implemented new services based on Flask and SQLAlchemy as part of a microservice architecture consisting of back-ends to mobile applications allowing users to trade virtual cards.

• Wrote extensive unit tests using Pytest for a number of microservices.

• Inspected C++ code for the BlocknetDX wallet and advised on improvements.

• Designed a protocol for the atomic exchange of bitcoins and ethers, including code for smart contracts.

• Designed a protocol for the atomic exchange of Ethereum colored coins following the ERC20 standard.

• Advised on the Ethereum side of things for the Blocknet whitepaper: https://blocknet.co/whitepaper/Blocknet_Whitepaper.pdf.

• Worked as part of the system team—releasing STB software to a major EU broadcaster.

• Helped design and implement a black box STB test framework written in Python.

• Set up and maintained a variety of software tools to enable the smooth running of the continuous integration and development/testing work.

• Set up Coverity static analysis and nightly automation using Jenkins.

• Set up Black Duck open source code matching.

• Configured Nagios and set up of NRPE with custom Git checks.

• Implemented various Cron/Jenkins jobs in Bash/Python to automate tasks.

• Installed and configured a DHCP server.

• Worked within a Scrum process with six weeks iterations, and the team was spread over three countries.

• Worked with a code base with 20 million+ lines of code.

• Detected and responded to system problems.

• Worked on the Perseus-based contribution encoder.

• Acted as the link (release manager) between the development and the product teams.

• Translated high-level business requirements into technical requirements.

• Established timelines and work breakdown structures in collaboration with the development team.

• Reported on the progress on a weekly basis and detected and reported impeding difficulties.

• Devised an Agile process with weekly iterations (based on Scrum).

• Changed the supplier of video cards to a cheaper product with much better support.

• Coded new features; including debugging and fixing of bugs and also integrated a TS muxer.

• Worked on the next generation of surveillance camera running on ARM9 with embedded Linux.

• Designed and developed the subsystems managing the date/time, mass storage, and multiplexing of the audio (AAC) and video (H.264) into a Flash file (FLV).

• Implemented automated unit-testing for the above subsystems.

• Worked on a modulator for a radiotherapy cancer treatment machine.

• Worked with a team of 15 people (including five who were under my direct management).

• Developed software that controls the modulator, from requirements to specifications, design, implementation, unit tests, and integration tests.

• Made all the critical decisions: choosing the programming language (C++), software compilation suite, coding standards, and RTOS vs bare metal.

• Defined C++ coding guidelines adapted to this high-integrity software.

• Designed the software architecture, including the structure of a 1 kHz control loop with hard real-time requirements.

• Verified the progress against time estimates and regularly reported to the project manager.

• Demonstrated successfully a proof of concept.

• Worked on the next generation of a portable appliance tester running on Integrity.

• Designed and developed some GUI screens and widgets.

• Designed and developed C++ classes to access SQLite databases; also designed the database schemas.

• Proposed an agile iterative software development process; it was partially adopted.

• Developed a USB printer class driver.

• Developed a Win32 PC application allowing the user to upgrade the PAT SW.

• Developed various device drivers: SPI driver, RTC driver, keyboard driver, and more.

• Made some modifications in U-Boot.

• Developed a .NET PC application to automate the programming of boards.

Performed various jobs on the next generation of IPTV STB, including a CA integration and MPEG Demux driver.

• Integrated GStreamer to the next generation of digital radios able to play internet audio streams.

• Developed the following: an RTSP/RTP/RDT stack, ASF Demux, Real Media Demux, and a HTTP streaming client.

• Developed various software components for a tiny WiFi board.

• Delivered successfully an SW—allowing the demonstration of the smallest WiFi board on the market to a key trade exhibition.

• Wrote for an ADSL modem a Linux Bluetooth API calling VxWorks.

• Developed an ethernet bridge making use of the network processor.

• Worked on the next generation of high-end Philips Digital TV.

• Integrated the VxWorks USB stack.

• Developed various plug-ins.

• Developed a network tool to replicate a distant video session.

• Maintained a video streaming server.

Developed software that was embedded on transmitting laser chips to control the laser's wavelength.

Developed various software modules embedded on military vehicles and planes.

• Refactored Terraform scripts to minimize the update anxiety.

• Advised on the best network architecture involving a Transit Gateway, multiple VPNs, and multiple AWS accounts for a complex flow of IoT data with the right balance between simplicity and efficiency, also being future-proof.

• Set up AWS Client VPN using Terraform with mutual authentication.

• Designed and implemented workload architecture on AWS suitable for the startup requirements based on Docker and ECS.

• Designed and implemented a complex system to generate and manage SSL certificates for this multi-tenant application.

• Automated workload provisioning using infrastructure-as-code (CloudFormation) such that white labeling would be possible.

Added new features to an access control system written in C++11 and Python 3.

Investigated and analyzed the performance of the OpenGL stack for WebKit.

Made modifications to the Icecast MP3 server to seamlessly insert audio ads for internet radio.

Upgraded some software drivers from an old STB to a new one running on Linux.

Developed some test tools to test STB drivers that wwere developed by STB manufacturers for the US digital TV market.

Maintained a server providing access services to an Oracle database.

Managed the validation of a test bench of a missile launching system.