Piotr Wieruszewski

Technical Lead (Contract) at CMC Markets

Led architecture and integration of external KYC vendor solutions to deliver a scalable customer onboarding experience using Node.js, TypeScript, Turborepo, AWS Lambda, API Gateway, EventBridge, SNS/SQS, Step Functions, and DynamoDB. Contributed to an internal DevOps platform converting YAML infrastructure definitions into Terraform (e.g., Step Functions, CloudWatch alarms, S3 static websites, component tests after deployment).

Technical Lead (Co-Founder) at NiFTyGet

Designed architecture for NiFTyGet products including brand integration, marketplace solution, blockchain integration, and AI-powered fake product detection. Built and maintained CI/CD pipelines using GitHub Actions and CloudFormation to automate build, test, and deployment workflows across AWS/Azure. Delivered an MVP integrating a white-label e-commerce solution with a blockchain layer using Node.js, React, PostgreSQL, Tailwind CSS, Solidity, and AWS/Azure.

Lead Software Engineer (Contract) at Iris Software Group

Lead engineer on IRIS Elements cloud migration using Kubernetes, Docker, .NET Core, PostgreSQL, RabbitMQ, Angular 8, RxJS, SASS, and AWS. Developed capabilities to manage accounting practice data in the cloud and ensured full integration with IRIS desktop software.

Technical Lead (Contract) at Just Eat

Led the Restaurant Events project (microservices) using .NET Core, Docker, OpenID Connect, API Gateway, S3, AWS Step Functions/Lambda, DynamoDB, RDS, Node.js, React, and Cypress for scheduled actions such as taking restaurant partners temporarily offline. Built a technology roadmap and provided architectural solutions for microservices in the restaurant operations domain and their integration points with the platform.

Lead Software Engineer (Contract) at Trainline

Worked in Scrum on a Contact Centre application integrated with a Single Global Platform, using microservices, .NET Core, Node.js, ES6, React, Redux, Saga pattern, Jest, and CodeceptJS (BDD). Introduced engineering best practices and mentored less experienced engineers; participated in interviewing new team members.

Senior Software Engineer (Contract) at Just Eat

Worked on a real-time bidding platform using .NET, Web API, DynamoDB, Bootstrap, AngularJS, TypeScript, and RxJS. Implemented a Core Order Flow using CQRS in .NET to replace the existing Order Engine, improving order throughput and decoupling it from the main data store. Delivered defect-free software using TDD/BDD with Karma, Protractor, NUnit, and Specflow.

Senior Software Engineer (Contract) at KPMG

Worked on .NET (MVC, Entity Framework, SQL, Data Warehouse, Web API) and JavaScript (AngularJS, OO, SVG) projects for KPMG and for the National Police Coordination Centre. Introduced best-practice development methods, performed code reviews, and optimized code to handle high data throughput.

Senior Software Engineer (Contract) at Oliver Marketing

Worked on an e-commerce project for Starbucks EMEA using PHP, MySQL, JavaScript, AngularJS, and Magento. Reviewed code from other developers and optimized backend and frontend performance.

Team Lead (Internship) at Commerzbank AG

Implemented software predicting stock price movement of a given company within a specified time frame. Extracted Twitter data for sentiment analysis and applied Gaussian Process for future predictions.

Team Leader (Internship) at Microsoft Corporation

Architected, designed, and implemented a big data solution in .NET (MS SQL, HDInsight, Entity Framework) deployed to Windows Azure. Used Gaussian Process for predicting energy consumption trends on a Big Data Infrastructure project.

Software Developer (Contract) at Grey Healthcare Group

Worked on a multithreaded application for sending patient details to a drug manufacturer using .NET C#, MS SQL, WCF, and SQL Server Service Broker with stored procedures.

Lead Developer (Consultant) at STEEL

Converted client requirements into technical design on the AWS platform and advised on scope and effort. Communicated requirements to outsourced development teams and reviewed their work.