Rohan Büchner
Team Leader Engineering @ Swiss Marketplace Group
·
Bern, Switzerland
- top 5% angularjs
- top 10% javascript
- top 20% c#
- javascript
- node.js
- single-page-application
- reactjs
- angularjs
- amazon-web-services
- .net-core
- c#
- sass
- winforms
- webforms
- vb6
- internet-explorer
- .net-1.1
- php
Started a role at OrderIn
Dec 2020
·
Ongoing
Principal Software Engineer at OrderIn
I received a promotion at Orderin. This role is an extension of my previous, but with the goal to enable more collaboration between the other streams in the organisation with a touch of product technical management.Internally OrderIn has 5 teams. Consumer, Merchant, Deliveries, Internal Tooling, Data Science all reporting to the Head Of Engineering but from a technical perspective its my role to manage the cohesion between the team.Duties still include development (R\&D/POC's), but also involve overall architecture session with team leads, and product design and planning from technical points of view.I'm also responsible for assessing things like 3rd party tooling, and seeing how they would integrate into parts of our system, vs evaluation if we should build custom... e.g find the right balance between speed long term product sustainability.
- .net-core
- docker
- node.js
- microservices
- reactjs
- google-tag-manager
- metabase
- sql
- git
Had a role at OrderIn
Apr 2019
·
Dec 2020
Lead Full Stack Software Engineer at OrderIn
I was employed to primarily work on the Consumer platform team going in.We built a new delivery app for McDonalds South-Africa:Scoot is built on top of:
- .Netcore micro-services running on AWS
- Fronted by React & Redux
- Utilising themed Material React-MUI
- Orders flow through the system using event driven design powered by SNS + SQS
- With application boundaries dictated by DDD principles
- Writing back end code in C# for dotnetcore & .net framework apps.
- Technical support of existing systems.
- Writing front end code for React + Redux.
- Line management of small team
- Recruitment support
- Basic project spec creation tasks in JIRA + Confluence
- Seo Optimisation Engine
- Upgrade of CI/DC Servers
- Implemented Enhanced HealthChecking
- Custom market research utilities
- .net-core
- docker
- node.js
- elasticsearch
- sql-server
- microservices
- health-monitoring
- metrics
- amazon-web-services
- reactjs
- react-redux
- redux-saga
- graphql
- rest
- api-gateway
- postgresql
- material-ui
- kubernetes
Contributed code
Dec 2020
·
Dec 2020
Elastic APM Sourcemap Uploader Webpack Plugin
This is a port of another project but converted to work with Elastic APM.
- javascript
- webpack
Earned a credential
Sep 2020
·
Sep 2020
LinkedIn Learning (SAA-CO1): 2 Storage Design
- amazon-web-services
- amazon-s3
Earned a credential
Sep 2020
·
Sep 2020
LinkedIn Learning (SAA-CO1): 1 Cloud Services Overview
- amazon-web-services
Had a role at RapidDeploy
Jan 2019
·
Mar 2019
Senior Software Engineer at RapidDeploy
I joined rapid deploy as a Senior Software Engineer after being head hunted. The idea of working on an application with more "real world scale" was my initial want out of making a potential move to them, there was a lot of great hype and promises.Reason for leaving:Although the company was building extremely promising tech. I could see that what my day to day comprised of, with regards to challenging and fulfilling work that I would be able to do on a daily basis, and what I expected going in, based on discussions during the initial interview, varied vastly.It became clear (to me) that staying would not provide the career that I was after. I decided to part ways with RapidDeploy before both parties got to a state were we where dependent on each other.I am in two minds about leaving this on my CV, but I do want to be honest and open about my work experience. I do feel thankful for RapidDeploy, even though my time spent there was short, it did teach me a lot about myself with regards to be clear about expectations going in & to be sure both parties (employer and employees) are exactly on the same page when accepting a new job offer.Work Completed:The extent of what I worked on during my time there was somewhat limited due to the vast size and the state of the existing code base.I did help to kick off some upgrade paths for sub sections of the existing interface, like planning and assisting with upgrading a parts of the legacy .NET webforms application to TypeScript & ReactJS.
- .net
- asp.net
- webforms
- sql
- jquery
- reactjs
- typescript
- bitbucket
Had a role at One Africa Media
Apr 2017
·
Dec 2018
CTO / Lead Software Engineer at One Africa Media
I initially joined One Africa Media as a Lead JavaScript / PHP developer. As first I worked on the Cheki (Cars) platform with the existing team.The opportunity to move back into .Net happened by a complete fluke / stroke of luck, as my immediate manager & boss informed me of a venture that is being kick started with Ringier.As the project started and the companies grew closer together and I was promoted to CTO of a new Meta Vertical team within the newly created ROAM (Ringier One Africa Media) organisation. I do feel the title might have been slightly misaligned, but I'd compare the role to what most larger companies see as a Software Architect / Principal Engineer.Notable Points:For the first half of the of the project I was a Lead Developer on a core solution that integrated with a foundational framework that was provided by the Ringier team.All build on top of:
- .Net core running on AWS (on ROAM's side)
- Backed by ElasticSearch & MSSQL
- AWS Lambda and Serverless
- React and Redux on the client side using SSR
- Software development
- Partaking in Architecture and planning sessions with the Ringier team
- Sprint planning for the South African team
- Line management for the local team of developers (3 at the time)
- Meeting with external stakeholders.
- The main application Sokoso, is currently live in 4 African countries within 2 vertical spaces (Jobs and Cars), with the goal to scale up within different sectors in the near future at the time of my departure.
- The team started taking on the maintenance continuation of the scraper engine that was kick started by the Ringier team
- modular-design
- microservices
- agile
- jira
- .net-core
- nuget
- npm
- architecture
- elasticsearch
- amazon-ec2
- aws-lambda
- amazon-cloudformation
- c#
- reactjs
- redux
- responsive-design
- user-interface
- docker
- seo
- google-tag-manager
Earned a credential
Aug 2017
·
Sep 2017
Learn Redux
- reactjs
- redux
Achievement
May 2017
Contributed code
Jul 2016
·
May 2017
Had a role at Manalto
Oct 2016
·
Apr 2017
Senior Software Developer at Manalto
During my time at Manalto I wore a few hats. I have listed the technical aspects below. But I was also heavily involved in candidate recruitment and technical interviews and growing the team.Team Lead (on Soshlr Application)Design and build new Analytics section inside existing the application using Angular 1.5.x. This was built in a way which allowed users to fully configure their own dashboard with regards to data end points and how they want to display the data. In a nutshell. It allowed users to have fully customised widgets (with drag, drop & resizing) which would then connect to our various API's we built to feed their dashboard.Software Design (of a new Sóshlr 2.0 stack):Design & plan our future solution from a technical point of view, enabling while label / rebranding capabilities. I designed a modular system, that centralised features within redistributable NPM modules within our private NPM repository. I created multiple custom Yeoman generators in conjunction with all of the above to allow kickstarting of new portals / solutions at a fraction of the time.Reason for leaving:The development team was great, and I'd gladly work with most of them again. One morning as we got to work the team was informed that we would not get payed that month and that the US owners didn't pay us. I stayed for another month, living off of savings (we got half a salary eventually a few days later), but when it happened a second time, it made it impossible to stay. I'm still due a month and a half's salary, but I wrote it off as a learning, and just moved on. A month or 2 after I left, the company as an entity disappeared completely within South Africa. (https://stockhead.com.au/tech/manalto-accused-not-paying-south-african-salaries/)
- node.js
- mongodb
- docker
- redis
- angularjs
- angular
- twitter-bootstrap
- less
- gulp
- gruntjs
- bash
- macos
- webpack
- sass
- git
- amazon-web-services
Shared a post
Mar 2017
Over the last few months I’ve been delving deeper into the world of webpack.
- webpack
- webpack-2
- typescript
- javascript
Had a role at Motorhome-World
Dec 2016
·
Feb 2017
Contractor at Motorhome-World
This was a once-off contract opportunity to build an app for a home automation system (for a luxury camper van).The project was completed part time & over the weekends.Motor home world installed a web-i (https://relaypros.com/web-i_interface.htm) logic board that could communicate with the relays they installed on the vehicle (think raspberry-pi esque)The interface I build was built in AngularJs and communicated with the board via RPC calls. The Web-I board acted as a little web server which hosted the app.
- angularjs
- api
- javascript
- web-i
- git
Achievement
Nov 2016
Had a role at Business Systems Group (Africa)
Aug 2013
·
Oct 2016
Lead Software Developer at Business Systems Group (Africa)
During my time at BSG I got to experience a wide array of projects and technologies.
Notable Points:
- I was part of team that drove the expansion of legacy tech stack into areas such as NodeJS, SPA, Cross- Platform mobile,
- Introduced higher use of code generation usage for "plumbing" style code.
- Part of the research team looking into frameworks such as DurandalJS, Knockout, AngularJS.
- First to R\&D the use of Cordova & IONIC for the company.
- Take point on with regards to UX on development teams, also had the responsibility to raise general UX awareness from a development perspective
- Handle all responsibilities on smaller one man short term projects. (Design, Deploy, Support)
- I like to be a team player and was happy to be part of a core team or solo depending on project requirements. Ultimately I wanted to learn and make money for my employer.
Clients:
Media24 I created a paperless new employee signup process integrating with Active Directory and Outlook Exchange- UI was based off of DurandalJS (now Aurelia)
- Consumed some existing SOAP Services
- Exposed logic via Rest API endpoints
- UI consisted of DurandalJS
- Existing Web API
- NodeJS, Angular, IONIC, Bootstrap
- Custom Web API Endpoints
- asp.net-web-api
- durandal
- single-page-application
- knockout.js
- jquery
- linq
- sql
- c#
- html
- css
- jqgrid
- asp.net-mvc-4
- repository-pattern
- t4
- angularjs
- ionic-framework
- user-experience
- entity-framework
Achievement
Sep 2016
Had a role at Standard Bank
Jan 2015
·
Aug 2016
Lead Technical Consultant (via. BSG) at Standard Bank
Contracted to Standard Bank via BSG.At the time of leaving, I was a Development Lead on a team of 7 people. Initially all technical & development responsibilities for first half of the project was completed by myself. After that the team grew by another 3 developers & 3 consultants. This was the most SQL & data centric job I took on, it definitely taught me a lot about data-modelling and working with larger, sometime extremely confusing data sets.
Tasks Included:
- Development of ETL Processes using SQL & IBM Data Studio
- Designing and document migration approaches for new CRM system
- Analysis of large unstructured customer data sets consisting of legacy data
- Organising & facilitation of meetings
- Stakeholder and Development team management
Links:
- data-migration
- outlook
- ms-office
- sql
- excel
- charts
- ssis
- datastage
Guitar
Jan 2015
I wrote all instrument parts using VST's (software instruments), and recorded both guitar tracks... be warned this is pretty heavy :)
Achievement
Apr 2015
Shared a post
Apr 2015
The MutationObserver at the end of the rabbit hole
Blog post around the usage of a mutation observer in one of my hack projects
Achievement
Oct 2014
Achievement
Sep 2014
Achievement
Aug 2014
Had a role at TFG Infotec
Jan 2013
·
Apr 2014
Lead Developer (via. BSG) at TFG Infotec
Contracted to TFG via BSG.Built a debt collection management system utilising SPA style frameworks. This was a 14 month project. I was heavily centred around UX and taking the lead on the front end JavaScript dev, introducing things like:
- Knockout chatting to the back end via REST secured with bearer tokens,
- Bootstrap
- Optimising front end performance (response caching, compression, code-splitting & lazy loading etc)
Links:
- knockout.js
- twitter-bootstrap
- jquery
- css
- mysql
- soap
- mercurial
- teamcity
- html
- scrum
- active-directory
- single-page-application
Had a role at Sovereign Foods Ltd
Jul 2011
·
Aug 2012
Software Developer (Production Systems) at Sovereign Foods Ltd
This was by far the role that was the most challenging for me early in my career, as I was required to learn how to be a proper developer. I also happen to create my StackOverflow profile at this time, which was the first time I interacted with the OpenSource community, the peer feedback went a long way in terms of teaching me things like IOC, and how to write re-usable code and splitting boundaries at levels that make sense.I needed to setup governance processes, was tasked with creating and maintaining new internal applications, all while supporting whatever I've deployed (eating your own dog food so to speak)I built custom and worked on internal solutions ranging from:
- Multiple MVC Intranet Applications.
- Assist data warehousing team with integrating with bio-metric time and attendance systems via background services.
- Custom dashboards using Web based charting components.
- Custom reports using SSRS.
- Smaller internal services.
- Internal MOBI site that ran on Windows Mobile devices.
- Data Integration & Migration using SSIS packages.=
- asp.net-mvc-3
- model-view-controller
- c#
- jquery
- jqgrid
- active-directory
- css
- reporting-services
- ssis
- ninject
- valueinjecter
- t4
- .net-4.0
- visualsvn
- sql
- fusioncharts
- linq
- linq-to-entities
- repository-pattern
- inversion-of-control
- entity-framework
Achievement
Jul 2012
Using the equivalent to the SQL IN function with LINQ with a collection
Had a role at Bennetts Technologies
Jan 2011
·
Jun 2011
Senior Software Developer at Bennetts Technologies
- First line support for existing applications
- Legacy system with major optimisation issues which where corrected in my time here
- Took over development responsibilities of prototype web email client (to integrate with exchange server)
- Database / Infrastructure design of various solutions for clients in:
- Automotive Industry
- Packaging Industry
- Integration from legacy sources to new custom designed warehouse
- Food Production Industry
Reason for leaving:
After joining I realised that the company was primarily working in technologies that where fast becoming phased out, and had no opportunities in the near or distant future to start working with the tech I wanted to get experience in. Prior to joining I was already experimenting in (then new) .NET MVC and Entity Framework, I did express that I am looking for a place that would be using this tech. As I was still young and very eager to learn and stay current, this wouldn't have been the best place for me to grow. Thus I decided to move on.
- c#
- asp.net
- sql
- t4
- linq-to-sql
- repository-pattern
- exchange-server-2007
- entity-framework
Had a role at CompRSA
Oct 2007
·
Dec 2010
I fulfilled the role of a team member on different projects, or worked independently some cases where projects required just a single developer. I also managed requests from the initial specification through all life cycles until the request was approved by QA.I attended weekly group scrum meetings where we would share any new technologies what we might have found and used that might assist other developers in their work and daily meetings with international clients using video conferencing to manage the projects.The biggest projects were web-based applications for payroll companies that act as the portal for their clients to perform HR activities, and service level applications to handle large amounts of data from 300+ biometric devicesOur team completed various projects for local & international clients.
- asp.net
- vb.net
- sql
- javascript
- crystal-reports
- dynamic-sql
- c#
- css
- itext
- rad-controls
- web-services
- data-access-layer
Graduated
Jan 2006
·
Jan 2008
International Advanced Diploma in Computer Studies (IADCS), NCC Education, UK
Achieved a final score of 94%+ for:
- C#.Net Final Practical
- VB.Net Final Practical
- c#
- vb.net
- asp.net
- .net
- sql
- perl
- html
- iis
- windows
- linux
- sdlc
- oop
Graduated
Jan 2003
·
Jan 2005
High School (Grade 11 - 12), Nico Malan
- Maths
- Science
- Afrikaans (1st Language)
- English (1st Language)
- Computer Science
- Accounting (Distinction)
Extra Curricular:
- Swimming Team
- Music (Guitar)
- Public Speaking
- delphi
- delphi-7
- oop
- ms-access
Graduated
Jan 2000
·
Jan 2003
High School (Grade 8 - 10), Kempton Park High
- Maths
- Science
- Afrikaans
- Economics
- Computer Science
- Accounting
- English
Extra Curricular:
- Field Hockey
- Music (Guitar)
- Track & Field
- Public Speaking
- turbo-pascal
- game-maker
Graduated
Jan 1992
·
Jan 1999
Primary School (Grade 1 - 7), Laerskool Impala
Maths, Science, Computer Studies, English Afrikaans, Business Studies, Economics
Background
Jan 1990
Background
In about 1990 - 1992, my dad walked into the house with what my brother and I somehow only remember as "the computer with a Green Screen"... The goal was to have us play "edutainment" style games like Reader Rabbit... Which ended up turning into: Frogger, Millipede, and Space Invaders, to name but a few. With all these games at our disposal we needed to learn how to traverse DOS to get to them, which made me, the eldest sibling, feel vastly superior to my (at that stage) less tech savvy parents.Fast Forward a few years, my brother and myself got into making little computer games with Game Maker, which prompted me to start taking programming classes in high school because of my dream to become a game developer at that stage.My dream of making games might have evolved into what it is now, but my passion for technology hasn't left, I still see development as the "Lego" of our tech era, and the potential that software development and all that it entails has only brought amazing changes to life, and I can't wait to see what the future holds.
Recommended Reading
Head First Design Patterns
by Elisabeth Freeman, Eric Freeman, Bert Bates, Kathy Sierra, Elisabeth Robson
The Art of Scalability: Scalable Web Architecture, Processes, and Organizations...
by Martin L. Abbott, Michael T. Fisher
We have a problem with promises
by Nolan Lawson
Awesome article explaining the right and wrong ways of using promises in javascript.
Boiling React Down to a Few Lines in jQuery
by Alexander Schepanovski