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Máté Marjai

I am a delivery and product focused software engineer working with industry leading companies as well as startups. Team player on all levels, I love creating great products that many people use day to day.


Engineering Manager at Primer

Feb 2024 -

Key Achievements

Leading the Acceptence Team, responsible for Mobile and Web guilds and SDKs.

  • Active part in the reorganisation to cross-functional teams
  • Spearhead engineering wide initiatives like incident fire drills, mentorship programme and team-wide demos
  • Checkout SDK rearchitecture across the board (iOS, Android and Web) with a component based approach
  • Driving IC Growth plans and mentoring Senior and Staff engineers

Engineering Manager at Phorest

Nov 2021 - Feb 2024

Key Achievements

Leading the Ecommerce Team, responsible for client facing Online Booking, Retail, Voucher services and Branded Apps in Phorest Salon Software - a major Beauty industry SAAS product

  • Personal and team career goalsetting and mentoring
  • Working with Senior Leadership and Product teams on technical and product roadmaps
  • Introducing KanBan and Sprint based development cycles
  • Co-Founding grassroots org-wide initiatives, like the Quarterly Shoutout.

CTO at BonsaiX

July 2020 - Dec 2022

Key Achievements

Development, Operations and Architecture for BonsaiX Knowledge management services

  • Fully automated deployments, FAQ initialization and environment setup.
  • Program management with all co-founders, working closely with the UI/UX design team on the platform
  • Analytics flow for all channels from the app and services.
  • Cloud architecture and CI/CD in Azure.

Senior DevOps Specialist at CleverCards - contract

May 2019 - Oct 2021

Key Achievements

Operations and Architecture for CleverGift platform

  • Rehaul the full architecture of CleverGift in AWS, with +50% saving in the monthly bills in the process.
  • Reporting infrastructure: Architect a cloud-based, serverless solution to manage data flow between main Databases and a central reporting Database
  • E-Gift Cards: Whitelabel solution for partners of CleverGift. Design and lead the mobile and external API to be used by partners.
  • Corporate ordering: Portal Architecture & 3rd party integrations
  • MasterCard MPTS service integration for virtual card issuing

Engineering Director at ThePayment.Works

June 2016 - June 2020

Key Achievements

Tech leader for our payments software toolkits, starting with Testing Pays. System design and architecture for high-availability and reliability using Elixir and Erlang. Design and lead the whitelabel application development for our partners.


Engineering Director at TheProduct.Works

August 2014 - June 2020

Key Achievements

Software technology and senior management consultancy. Our clients and projects:

  • Create and operate SMART App - community midwife planner
  • Grammofy - Classical music streaming.
  • EuroSEPA - Online invoice exchange and electronic payments for business.
  • Linked Finance - Peer-to-peer lending.
  • SAM Booking - language school booking engine between agents and schools.

Acting CTO at Popdeem

August 2014 - October 2015

Key Achievements

Leading the API change from RPC to RESTful services. Help the company to shift focus to B2B model from the technical side. Introduce a more structured project management, champion development best practices like CI/CD, API design, SDK design, etc. Move Popdeem product from a B-to-C prototype to a B-to-B platform


Lead Software Engineer, Acceptance and Payments team at SumUp

January 2014 - June 2014

Key Achievements

Leading the project to deliver Pin+ - state of the art Chip and PIN solution for SMBs. Working with hardware engineering closely in the integration phase of Pin+ to bring it into production. Turning the product from early prototype phase into production ready state. Creating a delivery focused culture and advocate continuous delivery. Support the device and system certification process: GICC - EMV payments, MTIP - MasterCard, ADTV - Visa, Visa Live tests.


Senior Software Engineer, Experience and Payments team at SumUp

January 2012 - January 2014

Key Achievements

Built up the Dublin Software Team from the inception of SumUp. Working closely with SumUp's founders from the get-go. Design and create the core API and all the pieces around it with the team in Dublin. Working closely with SysOps on bootstrapping deployment processes. Lead the team to roll out 6 additional countries on top the initial 4 within 3 months after launch. Deliver and maintaining internal admin interface for Customer Service, Payment Operations, AML.

Created DSL to describe onboarding flows that can be controlled from the backend on all signup channels (web, iOS, Android). Creating early prototypes for our award winning 'customer app' proof of concept. Creating the SumUp app-switch API. Receipt delivery and printing R&D.


Software Developer, Web and Mobile team at Hostelworld

January 2011 - January 2012

Key Achievements

Creating critical features for the business working on Hostelworld's flagship site and internal admin. Conduct the migration from Bugzilla to Jira. Exploring and advocating new ways of enhancing the delivery tools used. Piloting agile workflows with key members of the organisation.

Enhancing our mobile presense on dedicated site and mobile app. Conduct code migration from JS to CoffeeScript. Delivering v1.0 of our cross platform mobile app on iOS and Android using the mobile site as a base. Reorganise the backend APIs used for mobile and external services for payments, bookings and account details.


Web Developer, Cashier team, Payments at Full Tilt Poker

November 2008 – January 2011

Key Achievements

Delivered and supported over 50 projects of various complexity, all of which were mission critical for the business. Most notable ones include: Single click deposit, Cancel withrawal, Targeted marketing messages, Flexible player limits. Designed and delivered analytics and monitoring tools for our production systems. Slimmed down our deployment process from a 25-step list into a single click solution.


Web Developer/Co-Owner - Szoftver Szerviz Iroda

February 2006 – April 2008

Helping small businesses with invoicing and accounting solutions. Web solutions consulting for small businesses (HTML, PHP, Javascript, web hosting)




Community


Erlang & Elixir meetup

Organiser 2015 - 2018


Functional Kubs

Co-Organiser 2017 - 2018


Rails Girls

Coach 2015 Galway

Coach 2017 Dublin

Progmasters

Graduate coach 2018 Budapest




Talks & workshops


Don't let it crash! - Erlang OTP workshop

CodeMesh - 2016

Kats Conf 2 - 2017


Building the largest payment sandbox on a tiny machine

CUFP - 2017


Building resilient systems for high traffic - Erlang OTP workshop

Big Data Conference Vilnius - 2017


Elixir on its best behaviour - workshop

ElixirConf EU - 2018


Elixir Katas workshop & "Managing High Load on Low Budget" presentation

Big Data Moscow - 2018


Elixir Katas workshop

CodeMesh - 2018




Studies and qualifications


Eötvös Loránd University, Faculty of Informatics, Budapest

2003 - 2008

BSc in Computer Science



Key Strength

Ruby, Erlang, Elixir, Bash/Shell, CSS, Python, PHP, PostgreSQL, MySQL, RIAK, Redis, Java, JavaScript, React, React Native

Git, CI/CD, TDD

Multi-site, team-lead, fintech, mentoring, high-availability, scalability, deployments, mobile applications, payments, workshops

kan-ban, scrum, agile, story points, user stories