Web/Ruby on Rails/Golang developer; London, UK

Tesco Connect: Stocktakes

Modern Stock Take (MST) is an operation which performs a stocktake in each large format store twice per year. The aim of this operation is to correct any inaccuracies in the stock records of these stores in order to drive an improvement in availability.

This project was developed on within the client’s premises, Ikenna wrote the code for this project independently in collaboaration with the product owners, and He was also as part of a larger scrum team composed of other developers working on other projects.

The development was done and scheduled in an iterative manner with multiple feedback loops to ensure full involvement and collaboration.

Focused on the results delivering the requirements.

This app uses BackboneJS/Underscore/JQuery for frontend app model structure, rendering and DOM manipulation.

The backend was RUBY/RAILS REST based API, databases (MySQL and Teradata). This app also includes multi database connection to Teradata and MySQL as well as import scripts from Teradata to the mysql tables via fast exports and also BTEQ transactions as well.

Client: Tesco PLC
Date: 2014-02-28
Category: Web Development

National Cancer Audit Reports Project

The NCIN is a UK-wide initiative, working to drive improvements in standards of cancer care and clinical outcomes by analysing data collected about cancer patients via internal information systems.

Ikenna worked as part of the technology team at the National Cancer Registration Service East on the COSD reporting application written in initially in C#.Net.

This project’s conversion to a Rails had already started. He joined to assist accelerate its development.

He worked on Level 1 to Level 4 National Cancer Audit Reports (COSD) (HTML, Excel, PDF, CSV and Word) rendering using rail’s presenters and Data Access Object (DAO’s) for compositing the report summaries, which are driven by rspec tests.

Each summary is a collection of rows of ruby structs representing different parts of the reports (TotalStruct, SubTotalStruct. etc). Also the presenters provided that added advantage of sharing several components across report types.

Also he employed inheritance and composition to shared behavior and properties to similar types of National Audit reports like Lung Cancer (NLCA) and Prostate Cancer (NPCA)

This approach/pattern helped the uniformity of the report data presentation to different report formats (Excel, HTML, PDF, CSV and Word).

Ikenna also wrote the HTML to Word converter, which he adapted from ruby wicked pdf library as the already exiting gems did not fit into the Architecture.

Also, he is also involved in the data extraction from the ERA Oracle database COSD NLCA, NPCA, Clinical Indicators for breast cancers audits. This includes writing raw SQL queries, rake tasks and ruby libraries / import scripts for extraction of data.

Client: Public Health England
Date: 2015-07-30
Category: Web Development

Crowd funding and trading of property shares.

This project involved creating the complex mechanisms required in order to allow the purchase and trading of shares for properties with the same liquid behaviours expected by traders buying and selling shares in a stock exchange. The system also keeps track of the P & L for all off the properties, share price changes and dividends and interest payments due to the investors.

Ikenna worked as part of the team at Elevate Capital. He worked on Transport Links and Schools metadata feature for properties on the elevate platform. This is built as a ruby REST based API that interacts with several sources for data.

This also calculates the distance of the facilities to the property and also they plotted and displayed on a Google map. He was placed with the responsibility of delivering the work, which involved Devops (Rackspace and setup of Proxmox hypervisor which with setting Up isolated local test environments), Backend and Frontend tasks.

He implemented elastic search for Marketplace (Property and Business loans) and Knowledgebase CMS. This was deployed to docker container in an Rackspace cloud environment.

He used docker with vagrant/virtualbox to setup his isolated development environment.

Also Ikenna worked on the Step 3 Financial Performance feature where he developed a complex rails form for capturing Income and balance sheet figures for rating the respective company performance over a period of time. He also fixed bugs across a number of features on the elevate platform (registration, non-uk residence feature, Effective dates et al).

He also integrated D3.JS graphs (for reporting) into the Backbone.JS frontend. He is currently implementing the APIs (automated docs with swagger ui) for the new Backbone.JS frontend.

His last assignment was the development of the frontend (Backbone JS) and backend (RoR) of the underwriting section of the Elevate app. This covered calculations of key performance indicators (like EBITDA, Change in turnover/Net Assets, Liabilities) from companies data obtained from Duedil API, Experian (ID HUB) SOAP API and Companies House raw data.

Client: Elevate Capital Ltd
Date: 2015-03-30
Category: Web Development

List of Blog Posts

Object Oriented Mapping in Golang Jan 21, 2015

When is the future Apr 14, 2006