Costin Tanasoiu

• I established a new Trust & Safety engineering team and took ownership of its architecture and technical strategy.
• Delivered a comprehensive solution for content moderation across all WeTransfer products, compliant with EU laws. With roughly 85 million files uploaded daily by our users, this solution ensured that illegal content is detected and blocked swiftly, with appropriate notifications in place.
• Designed and delivered a new copyright detection project, preventing the monetization of pirated media on our platform.
• Designed an event driven architecture for Trust & Safety file scanners, simplifying the process for adding new integrations.
• Introduced Scrum, ticket templates in Jira, and a story-pointing framework to organise and streamline team workflow.
• Authored technical design documents, defined performance metrics, secured stakeholder approvals, coordinated with external vendors, planned projects in Jira, and implemented features.
• Enhanced the reliability, testability, and documentation of team's services to meet WeTransfer’s standards of excellence.
• Technologies used: Go, Kubernetes, Amazon SQS, Terraform, K6

• In the Analyse & Transform team, worked on backend services for file preview generation, format parsing, malware scanning, and content moderation.
• Led the development of standards of excellence for services across engineering teams, in terms of automation, documentation, quality assurance, reliability.
• Wrote project briefs and technical design documents, and included team members in refining these plans.
• Ensured that the MVP for a content moderation integration project was delivered on time, by taking on additional responsibilities such as cross-team coordination and addressing gaps in task assignments.
• Developed scripts and practices for performing load testing, mirroring production traffic distributions, and gave a company-wide presentation on the topic. This prepared new services and features to withstand production workloads and spikes.
• Played key role in setting up coding standards and practices for projects developed with Go.
• Developed new features for our services, working closely with product, compliance, and platform infrastructure teams.
• Technologies used: Go, Ruby, Kubernetes, AWS API Gateway, Terraform, K6

• Hometrack provides market intelligence, automated property valuations, and solutions for digitising and automating mortgage processes.
• As architect and tech lead for the Valuation & Risk product group, team of 5, I oversaw architecture and engineering efforts, ensuring alignment between technical strategies and business goals.
• Following an acquisition, I delivered an integration of core products, incorporating portfolio risks, climate change risks, and customer price evaluation into Hometrack’s property valuations. This significantly expanded our market coverage.
• Performed selection process for the right identity provider, with the goal of unifying the login experience across products. The selected solution was purchased and integrated, and I added support for HSBC single sign-on and hierarchical role-based access control.
• Responsible for writing and breaking down work items, epics, features and stories, refine them with the rest of the team and use planning poker to come up with estimates.
• Involved in quarterly planning and other business-oriented discussions on behalf of my team.
• Involved in cross-team efforts on improving work processes, performance and quality while maintaining a sustainable work pace.
• Improved a data build process by using Synapse Analytics to transfer massive amounts of data from Databricks Delta to SQL Managed Instance, which reduced build time from 40h to 5h.
• Technologies used: C#, ASP.NET Core, Azure cloud resources, Terraform, Powershell, Azure DevOps CI/CD Pipelines, LucidChart, Analytic Hierarchy Process

• Involved in designing and implementing a new cloud architecture in Microsoft Azure, as part of a company-wide re-platforming process. I found solutions, developed services and wrote Terraform scripts, augmented with PowerShell and ARM templates.
• Developed Valuer product – web application that allows surveyors to value properties from the comfort of their computer screens – contracted to HSBC, Bank of Ireland, and Barclays.
• Developed REST API for ordering Property Valuation Reports – integrated by many customers in the form of subscriptions, later sold as a co-branded solution for property agents through the Zoopla platform.
• Broke down monoliths, developed new microservices in Azure.
• Created CI/CD pipelines, built a new reporting engine using InDesign Server, made improvements to Hometrack’s geographical web-service, introduced unit tests for JavaScript, and developed a cross-business prototype search portal for commercial properties.
• Took on a Project Manager role and 1) coordinated the development of a new admin portal for multiple products, and 2) initiated a new commercial project. Organised stakeholder meetings, captured business requirements, defined business case, risks, technical requirements, project objectives and scope, milestones.
• Technologies used: C#, ASP.NET Core / MVC, Knockout, Vue, SQL Server, PostgreSQL, GIT, PowerShell. Azure related: App Services, API Management Service, Service Bus, Key Vault, Blob Storage and File Shares, Terraform, Azure DevOps CI/CD Pipelines. Map libraries: Google Maps, Ordnance Survey maps, Leaflet JS, OpenLayers.

Mar 2011 – Jan 2015: Part-Time (3 days/week)
Feb 2015 – Mar 2016: Full-Time

• MCB A/S is a Danish IT company specialised in e-commerce.
• Worked in R&D, developing new products and integrating new technologies into MCB's existing solutions.
• Lead developer for MCB's e-commerce platform for mobile devices - an ASP.NET MVC project with a customizable widget-based front-end. We contracted this platform to 50 companies in 2011, reaching 350 by the end of 2015.
• Team Lead during final year, doing software development and project management.
• Developed a modular, interface-based structure for our payment system, and integrated payment gateways (QuickPay, AltaPay, Klarna).
• Built quick-order functionality using Knockout JS, supporting keyboard navigation, favourites, wish lists – well received by customers.
• Developed new CMS pages using AngularJS and Sass - Analytics management, dynamic CSS editor/previewer, price discounts, product group management.
• Implemented a dynamic slideshow module into the e-commerce platform, complete with management pages in the CMS.
• Developed a feed generation software for customers' web-shops, supporting Google Merchant, PriceRunner, DBA, PartnerAds, etc.
• Implemented Google Analytics event tracking.
• Implemented video management pages in CMS using YouTube API.
• Established coding standards for object-oriented JavaScript code.
• Coached and mentored programmers.
• Periodically handled day to day production tasks and support cases for web-shops hosted by MCB.
• Technologies used: C#, ASP.NET, MVC, AngularJS, Knockout, jQuery, SQL Server / T-SQL
• Project examples: livingshop.dk, cykler.dk, vildmedvin.dk, fashionfifteen.com, completliving.dk

Part-Time (1-2 days/week)

• Developed two iPad apps for children along with my partner, which included story books, colouring books, and several mini-games.
• Developed a website for a Danish restaurant chain – used WordPress Multisite, implemented new WordPress plugins and integrated WooCommerce.
• Technologies used: Phonegap, HTML5, JavaScript, TexturePacker, CreateJS, Sass, CSS; Wordpress, PHP

• Government project – developed web interface for border control hardware. Other projects involved a web-shop, a job portal and a few presentation websites.
• Technologies used: C#, ASP.NET, DevExpress Toolkit, JavaScript, SQL Server, Wordpress

Web and desktop applications using VB.NET, C#, SQL Server and JavaScript.