iot-analytics-crawler-rs
- Crawler written in Rust(lang) to process CSV files from AWS IOT Core / IOT Shadow Classic with a Parser to perform JSON reconstruction from a string-payload (malformed format).
- Crawler has to reconstruct JSON data and filter row-entries by Hotspot serial numbers.
- Per-customer CSV files are pushed to S3 with the filtered results.
- Customers with filtering disabled are given the parsed data (with reconstructed JSON data).

Helium Onboarding server
- Deploy Helium's Onboarding server into AWS Fargate with CodePipeline for CI/CD.
- Design a Terraform (IaS) approach to deploying workloads into Fargate.
- Deploy a production instance of Helium's Console and Router (LoRa Network Server (LNS) backend) into AWS
- Use virtual devices (written in Rust!) to test blockchain connectivity.
- Run Router benchmarking and further performance tuning

Helium Console/Router
- Deploying a custom OUI with Console and Router fully registered on the blockchain.
- Making payments (burning DC) to ensure router is operational.
- Advanced router analysis with Prometheus/Grafana
- Deploying Data Only hotspots (Light hotspots) with `gateway-rs`.

RAK TrackIt
- Configuring sensor devices to push data into Console server (see above)
- MQTT integration to push data into ActiveMQ in AWS.
- Testing hardware RAK4630 (nRF52840 MCU) connectivity with RAK7268C (WisGate Edge Lite 2) configured as a Data only hotspot, to push packets into ActiveMQ.

MNTD
- Collaborating with the MNTD team (TBD).

Advanced AWS
- Serverless APIs with API Gateway, Lambda functions with Python
- Designing and deploying IaaS (with Terraform) to deploy containers to CodePipeline and Fargate
- Configuring and deploying cross-region peering (across CIDR blocks)
- Securing private access within subnets and external access via VPN endpoints and OVPN client access. Each client gets their own unique crt/key certificates.

Responsible for Rails application development and management of Cloud infrastructure consisting of configuration management via Ansible, GoCD CI/CD pipeline and Site Reliability Engineering (SRE).

Cloud infrastructure was upgraded for Ruby & Python dependencies and to Ubuntu LTS 20.04. Each upgrade consisted of creating a separate isolated testing stack, to perform the upgrade and safely make changes as required. Once testing was completed, these updates were then applied to the production stack in co-ordination with the product owner and development team. The same approach was applied for the maintenance of the GoCD CI/CD stack.

"Our clients come first and we build their products. Focusing on user experience and simplicity, we write code for mobile and web" — inertialbox.com

WHAT I DO
I specialise in agile development of responsive apps in Rails with a keen focus on business value and user experience. With a mobile-first approach, most clients with a moderate budget (such as startups looking for rapid-prototyping of MVPs) are recommended to take the responsive app approach, expanding to native mobile applications, connecting to the main site via carefully crafted APIs.

Having shipped apps for big, small, and medium-sized companies we also take fault-tolerant cloud deployment seriously and as such leverage DevOps solutions in all our production environments with some of the leading tools and technologies such as Ansible & Docker.

Our mantra is to ship-it-fast with best TDD/BDD practices and CI (Continuous Integration) aiding in minimising bugs and keeping technical debt to a minimum.

RATES & BOOKING
I offer design, architecture, and development services for US$100 - $200/hour for consultancy work. I am open to offering a competitive rate for long-term engagements, those typically lasting beyond 2-months.

Your development time is not confirmed until the minimum has been received and we've both signed my contract, and other contractual matters are arranged (such as NDAs etc). We rely on satisfied clients and repeat projects and therefore always do our utmost in ensuring your expectations are exceeded, every time.

"If you think it's expensive to hire a professional to do the job, wait until you hire an amateur."
---- Red Adair, Firefighter.. for oil wells

The client's organisation approached us with an iOS app for iPad (under Beta) and wanted the same app replicated for Android.

The training tool developed was fairly substantial, with over 60+ views, we tailored these for 600dp/720dp mdpi tablet devices.

Retrofit was used to interface with the client's backend API for authenticated user login; Furthermore, the training tool also contained multiple forms that allow persisting data to the local SQLite DB and allowing users to share the form as a PDF for printing or via email.

Contracted as a referral for specialist work with RefineryCMS and to assist in upgrading to a newer version of Rails.

DevOps work including moving to a bespoke Ansible based-stack on Digital Ocean, along with improvements.

We Build Scalable Web and eCommerce Software Applications, Leveraging Ruby on Rails and Solidus (the future of the Spree open source project).

Solidus -- "An open source, eCommerce application for high volume retailers. Built with Ruby on Rails, this mountable engine provides a scalable, stable, and highly customisable platform for online commerce"

Responsible for full lifecycle development of web-related projects, including full-stack Rails CMS & eCommerce apps, and Developer Operations (DevOps) for cloud-based deployment, maintenance, and management.

Daily responsibilities include:

Scoping: Jobs from clients are internally scoped and estimated; these vary from features, to complete overhauls, or bootstrapping new applications.

Development: Involves feature development, bug fixing, bootstrapping new applications, overhauling legacy Rails 2.x CMS/eCommerce apps, integration of responsive frontend markup, and implementing all Javascript aspects from AJAX/PJAX to ES6 Promises, and client-side JS such as Backbone & Ember.js.

Responsive frontend work involves SASS updates, with a mobile-first approach for media-queries, with Sprockets (Asset Pipeline) and build-tools such as Grunt/Gulp.

Domain-modelling and working with databases, caches, background jobs and full-text search are part of the development process, as well as managing data (state) between production and staging app environments.

eCommerce: There’s a high focus in eCommerce value delivery to our customers involving aspects such as payment gateway integrations with SagePay and implementations with Spree or bespoke. These apps are API heavy integrating with warehouse services via Microsoft Dynamics NAV (SOAP) or Opera (XML).

DevOps: Application deployment via existing Opscode Chef infrastructure, developing and upgrading cookbooks, and rolling out new applications. Git hooks, AWS services are examples of tools and services used.