Java Services

Applause

- Developing new product features for the high-volume single page application applying knowledge of Java 11, Node.js and Angular.
- Improved web application performance and UX with migrating 90% of the codebase from Angular.js to Angular 11 and leveraging its optimization potential.
- Reduced web application tech debt by moving deprecated midtier backend calls to dedicated app BFF and upgrading codebase to Typescript.
- Optimized web development lifecycle by migrating two web applications from their own repositories to central web-app monorepo.
- Increased chat application unit test coverage from 21% to 78%.
- Moved platform application queue traffic from AWS SQS to RabbitMQ resulting over 30% cost reduction spent on external queue service.

Full Stack Developer

EY GDS

- Developing new and customization of the existing features for the multi purpose web application using Java and Angular 7. Focused on document automation module.
- Improved developer and end user experience migrating UI from Thymeleaf to Angular.
- Integrating with third-party services and external APIs as a part of implementation of the critical backend component providing authentication feature with SAML2 protocol.
- Participating in peer code reviews for the mission-critical online service maintaining code and design consistency across different team members.

BDSolutions

- Design and implementation of Godly mobile application with strict cooperation with the UX and graphics department.
- Setup the processes of releasing and distributing the application to the Google Play store.

Mobile Developer

X-Trade Brokers

- Initiative and implementation of an application for managing client content and application translations, which resulted in the possibility of changing application translations at any time and synchronization between environments.
- Modernized key web application for customers by updating web technologies from jQuery / Velocity to Angular.js resulting in increase in user retention.
- Introduced two-way communication using Websockets to a critical web application, which allowed the client to be informed about the status of his operations in real time.
- Increasing the productivity of Java programmers by introducing the JRebel tool to reload the code without restarting the application.
- Design and implementation of new cross-system functionalities in cooperation with other project teams.
- Performing the role of the technical leader of the team during the last months of work.
- Monitoring, troubleshooting, debugging and bug fixing of the applications.
- Integration with several online payment providers, providing customers with additional channels for card payments or using banking systems, which translated into an increase in the amount of deposits in transaction accounts and the company’s profit.
- Integrating with internal services and APIs (i.e. CRM or trading system) as a part of
implementation of the mission-critical backend application for processing client account related operations resulting in shortening the time of creating an account by over 90%.
- Developing and maintaining internal libraries and API clients.
- Introduced a system of calculating commissions on deposits made, which allowed to reduce the cost of servicing payment systems.
- Performance tuning of the business-critical application database for asynchronous
processing using Hibernate improving query execution time by 30-60% and overall system response time.
- Design, implementation and deployment of a central client database, which allowed to reduce data duplication among the internal systems.
- Creating internal tools for monitoring the activity of logged in users with the use of JMX.
- Experimenting with front-end frameworks for business-critical accounting application that helped to boost project development efficiency.
- Using tools for static code analysis and elimination of blocker, critical, and major issues from critical business application.
- Mentoring and couching newly hired team members and juniors resulting in over 50% of onboarding time decrease.

Software Developer

Xentivo

- Preparation of the MVP application for submitting electronic applications for funding under the European Entrepreneurship Development Program.
- Developing new and customization of the existing features for the document management application based on open source NuxeoDM and commercial Documentum platforms.
- Coordinated with engineering and product teams in the identification of customer requirements for the document management application.
- Conducting training on the use of the application for end users.
- Preparation and implementation of a demo application for potential clients.

Java Programmer

Fullstack developer

C#, VB.Net, VBA, SQL, WinForms, PHP, CSS, HTML, Microsoft Excel & Access, SQL Server

Full-Stack .NET developer

Verdn

First engineer to join Verdn, which provides businesses with an API to plant trees, recover ocean-bound plastic and restore coral reef.

* Revamped pricing system that processes 1,000s of transactions a day
* Introduced data warehousing and infrastructure for Shopify app, which produced statistically significant positive conversion ROI
* Added coral reef restoration to product, with immediate uptake by customers
* Helped add Zapier integration, connecting Verdn with 1,000s of other apps

Founding Engineer

Various clients - Tugboat Coding Limited

Various clients. Projects included:
* Developing for a national newspaper’s website (News UK), serving millions of visitors
* Building scientific study portal (MVP) for a BioTech startup in 10 days
* Leading the redesign of an InsureTech startup’s web app

Contractor

Digitbrew (formerly Data Hygge)

Founded at Entrepreneur First, Digitbrew measured user experience (UX) in apps. We identified user frustration signals, including rage clicks, to capture in-the-moment feedback from users.

My role ranged from customer discovery to product development. Products built from scratch:
* Analytics tracker installed on websites serving 1M+ visitors
* Analytics back-end distilling insights from 1B+ of data points
* Chrome extension annotating websites with UX insights and high ROI opportunities

CTO and Co-founder

Various clients. Projects included B2B enterprise recruitment software managing 1,000s of candidates.

Hellocar

As Technical Lead at Hellocar — an online car-buying platform founded at Founders Factory — I was involved from the very early stages of the startup. I helped build the product from the ground up and led the technical effort to successfully launch it. Product development was my primary focus, but I also developed tech to support other business functions, including marketing, operations and sales.

Tech Lead

Conversocial

With Conversocial, enterprise customer service agents managed business social media accounts. I developed web and mobile apps for the CROWDS peer-to-peer social customer service product. I helped build the CROWDS mobile app from scratch, including the architecture, test suite and build system. I led the product from its inception to its release six months later in the Google Play Store.

Software Engineer

Nimble Storage

Full-stack server-side REST API implementation and client-side web UI development for the InfoSight cloud-based data storage analytics, monitoring and management platform.

Projects included:

* Self-service customer-facing tools to automate technical support workflows
* UI overhaul of customer-facing platform
* Internal REST API to interface with Salesforce's API
* Licensing system to register and activate proprietary software

Expert, freelance Amazon S3 engineers