Hello I'm

Razvan Mahu

Lead Software Engineer

  • London, UK

Summary

Experienced and self-motivated software engineer ready to solve problems using innovative solutions. Able to take software through all stages of development, from design and rapid prototyping to testing, deploying, scaling and maintaining the code. Acquired a diverse set of technical skills and knowledge throughout the years, being passionate about computer science since an early age. Capable of collaborating effectively within a team, managing, mentoring and coaching other engineers.

Technical Skills

  • Python
  • Django
  • SQL
  • TypeScript (JavaScript)
  • React
  • AWS
  • Docker
  • Terraform
  • GCP
  • Kubernetes
  • Ansible
  • Angular
  • HTML
  • CSS
  • MongoDB
  • Java
  • Scala
  • C#
  • C
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Work Experience

Lead Python Engineer, Onto, London

August 2022 – Present (Full-time)
  • Adapted to company administration in September 2023 by expanding expertise in billing systems (Stripe) and mobile development (iOS and Android) while maintaining platform stability with a smaller team, continuing to fulfil line management duties and supporting the team in difficult times during the gradual shutdown.
  • Line managed three people since May 2023, regularly providing feedback and support when needed.
  • Contributed to the organisation and planning of the Onto For Business project across different technical domains.
  • Created an internal RFC (request for comments) to establish a role-based access control solution across teams.
  • Established the production support process for the engineering team.
  • Developed new features for the booking and fleet engine using Django and GraphQL and contributed to our internal tools using React.

Senior Software Engineer, Ocado Technology, Hatfield

October 2020 – August 2022 (Full-time)
  • Worked on Code for Life, an open-source educational project, assisting teachers with computer science lessons and helping students learn programming using fun games. Led the tech of the platform using Python/Django for the back-end and JavaScript/React for the front-end as well as maintaining the infrastructure on GCP/AppEngine/Kubernetes. Migrated the CI/CD pipeline from Travis to GitHub Actions. Mentored and coached software engineering colleagues.

Innovation Technology Lead, Qlearsite Ltd, London

July 2016 – October 2020 (Full-time)
  • Joined the company when there were only four other employees, initially focused on front-end development of prototypes in Angular, then back-end development in Python and infrastructure automation with Ansible on AWS.
  • Working closely with a colleague specialising in machine learning, assisted the engineering team in productionising and integrating NLP and predictive analysis tools into the core product.
  • Interviewed candidates for front-end developer and infrastructure engineer roles.
  • Mentored new joiners, getting them up to speed with the projects, codebase and internal processes.
  • The startup successfully received additional funding, having more than 30 employees in October 2020.

Integration Developer, Acturis Ltd, London

July 2015 – July 2016 (Full-time)
  • Being part of the integration unit and working closely with business analysts and the helpdesk team, contributed to the development of a platform used in the insurance industry, utilising WebMethods, Java, C#, PL/SQL and web programming languages.

Project Manager for Applied Management System, Applied Experts Ltd, Huddersfield

May 2013 – July 2015 (Freelancer)
  • Enhanced and maintained a complex PHP/MySQL web application for interpretation and translation booking management, successfully completing and improving upon unfinished code from a previous developer.

Software developer, Tribosonics Ltd, Sheffield

June 2014 – August 2014 (Summer job)
  • Developed a Raspberry Pi control interface for the company's board T200, displaying the waveform of an ultrasonic sensor as a graph.
  • The interface was web-based, written in HTML, CSS, JavaScript/jQuery, PHP and the communication between the boards was made using SPI and written in C.
  • The interface was also adapted to work using a USB device and a Windows computer.

Education

University of Sheffield, MComp Computer Science

September 2011 – June 2015
  • 2015 - Class One Honours Overall
  • 2014 - First Class Performance in 3rd year, First Class Dissertation - Raspberry Pi Control Interface for T200 Board
  • 2013 - First Class Performance in 2nd year
  • 2012 - First Class Performance in 1st year
  • 2012 - Elected as Web Officer for Romanian Society
  • 2012 - Certificate of Appreciation in recognition of valuable contributions to The University of Sheffield Romanian Society

National College "I.L.Caragiale" Ploiesti, Romania

September 2003 – June 2011
  • 2011 - Certificate of Professional Skills (Design and structure of software products required for implementation of software systems, software applications, databases, web pages (client oriented software); Customization, configuration and software application change in order to comply with informational systems of the customer)
  • 2011 - Certificate of Computer Skills (Based on the results obtained at the assessment of computer skills with a score of 99 and level of Experienced user)
  • 2011 - Diploma of High School Graduation (General Average Grade at the High School Graduation Exam: 9,35)
  • 2011 - Award of Course Completion Oracle Academy Database Programming with PL/SQL
  • 2011 - Award of Course Completion Oracle Academy Database Design and Programming with SQL
  • 2010 - Certificate of Course Completion CISCO IT Essentials: PC Hardware and Software
  • 2010 - 1st prize in county stage of „Istorie si Societate in dimensiune virtuala”, Prahova
  • 2008 - Bronze Medal obtained at Computer Science National Contest
  • 2006 - 3rd prize obtained at Computer Science County Contest
  • 2005-2007 - Participation at Computer Science National Contest
  • 2005-2006 - Special Award obtained at Computer Science National Contest „Marele Premiu al Palatului Copiilor”, Programming section
  • 2004-2005 - Special Award obtained at Computer Science County Contest

Other Skills & Experience

  • All Categories
  • Weekend Projects
  • Old Projects

Door Lock Sensor

A project I made to test the WiFi client-server communication between 2 ESP32 boards. The server has a small API that receives a 0 or a 1 and then displays 'VACANT' or 'ENGAGED' on its screen. The client board connects to the server first and then calls the API when the attached button's state change.

  • esp32
  • battery
  • wifi
  • c++

Fruits Keyboard

I made this fun project to test the capacitive touch sensors of ESP32. I connected those to some fruits and attached a piezoelectric speaker as well to make different sounds when touching them. The result can be seen and heard in the video.

  • esp32
  • piezo
  • sound
  • piano
  • fruits
  • c++

Pi Robot

Most of the hardware came as a kit: motors, board to interact with Raspberry Pi, wheels, etc. I attached a camera, a power bank and then built a quick web interface to send commands to the Pi and receive video from the camera. The communication was done using WebSockets.

  • raspberry pi
  • camera
  • robot
  • interface
  • websockets
  • python

Voice Pi LEDs

This is a project I made to try out Google's voice recognition. I used Dialogflow for this which also extracted keywords from the sentence I said and called an API which was running on the Rasperry Pi Zero. This converted the color into RGB, switched on the requested LED with the desired color and returned a message to be spoken back to the user.

  • raspberry pi
  • voice
  • LED
  • color
  • python

Website design

Fictional web design company website using HTML5, CSS3 and JavaScript. This project is not hosted any more, but can be found on Wayback Machine.

  • web design
  • html5
  • css3
  • javascript
Wayback Machine
website design home page

Two Chasing Lamps

3D application made in Java with JOGL2. It has controls for switching lights and textures and to start/stop/reset animation.

  • 3d
  • animation
  • jogl2
  • java

Fortele Rivale

Online browser-based game using HTML, CSS, JavaScript, PHP, MySQL. This project is not hosted any more, but a part of it can be found on Wayback Machine.

  • game
  • html
  • css
  • javascript
  • php
  • mysql
Wayback Machine
fortele rivale home page