Available for Outside IR35 Contract Engagements
Senior Software Engineer
I help teams ship resilient, well‑tested systems on tight timelines — from IoT platforms and payment services to large‑scale content pipelines.
I had the pleasure of working with Jakub at NewDay, where he joined on a short-term contract to help get a project over the line in a challenging environment. He made an immediate impact, bringing strong technical skills and quickly getting up to speed. His flexibility and openness to collaboration were key to integrating with the team and delivering results effectively.
— Poldark Clarke, Senior Engineer at NewDay LtdA rare combination of deep expertise and genuine curiosity, Jakub finds the right solution rather than the easiest one. An outstanding teammate who treats your product like his own.
— João Alpuim, Software Developer at PerfectDraft / AB-InBEVJakub is a highly effective Software Engineer who is well respected by his team. His technical capability, proactive approach and collaborative working style enabled him to deliver valuable changes to our product within days of joining the team.
— Dale Moody, Engineering Manager at NewDay LtdWe had the pleasure of having Jakub on our team playing a major role in the replacement of our Entitlements system. His attention to detail, asking questions and challenging assumptions were great contributions to the successful delivery of the project. He was quickly up to speed with our ways of working and fit into our team from day one.
— David Johnson, Principal Developer at Springer NatureJakub was a pleasure to work with and made a strong impact in a short space of time. He was professional, reliable, and technically excellent, quickly became productive, and helped the team deliver business-critical work under challenging deadlines.
— Luca Sgroi, Lead Engineer at NewDay LtdI am a senior .NET/full-stack contractor with 15 years of experience shipping production systems across finance, IoT, publishing, e‑commerce and media. I ramp up fast, deliver on tight timelines, and leave codebases in better shape than I find them.
My main areas of expertise are:
I bring a strong technical perspective while adapting to each team's existing architecture and processes. I believe the long-term success of software projects comes from automation, continuous delivery, and leveraging team creativity through practices such as XP, TDD, BDD and pair programming.
Senior Software Engineer · Short-term Contract, remote
Delivered a debt repayment plan service within the NewDay payments platform on a tight deadline — covering payment scheduling, collection and settlement — enabling the business to meet contractual commitments on time.
IoT Cloud Developer · Contract, remote
Contributed to an e-commerce offer engine with fraud detection and a Blazor management portal that drove record revenue quarters. Maintained the Smart Beer Dispenser IoT solution on Azure IoT Hub. Maintained an internal microservice framework that accelerated delivery across the team.
Senior Software Developer · Contract, remote
Migrated the core content provisioning system from a third-party solution to an in-house microservice architecture, achieving zero-downtime deployments for one of the world's largest academic publishers. Kick-started a greenfield educational institution management web application.
Senior Software Developer · Contract, remote
Key technical contributor during a major digital transformation — led multiple integration projects, migrated CI/CD from Jenkins to Azure DevOps, and bridged legacy systems with Microsoft Dynamics. Mentored junior team members throughout a 3.5-year engagement.
C# Web Developer · Contract
Maintained and built new features and third-party integrations (Salesforce, in-house Patient Relationship Manager) in bespoke patient support web applications.
Senior C# Developer · Contract
Developed a social media portal for the legal industry as part of a small agile team. Delivered training and handover programme for permanent staff.
C# Developer · Permanent
Built features for VOD and advertising platforms serving millions of subscribers. Drove adoption of Continuous Delivery, led the department-wide Git migration and training, and raised automated testing standards across multiple teams.
Lead Developer · Remote
Rewrote a legacy loan management system from a database-driven architecture to a modern .NET stack, significantly improving usability, maintainability and reliability. Led teams delivering an e-commerce application and an online lending platform end-to-end — from requirements analysis and backlog management to third-party coordination.
I had the pleasure of working with Jakub at NewDay, where he joined on a short-term contract to help get a project over the line in a challenging environment. He made an immediate impact, bringing strong technical skills and quickly getting up to speed. His flexibility and openness to collaboration were key to integrating with the team and delivering results effectively.
A rare combination of deep expertise and genuine curiosity, Jakub finds the right solution rather than the easiest one. An outstanding teammate who treats your product like his own.
Jakub is a highly effective Software Engineer who is well respected by his team. His technical capability, proactive approach and collaborative working style enabled him to deliver valuable changes to our product within days of joining the team.
We had the pleasure of having Jakub on our team playing a major role in the replacement of our Entitlements system. His attention to detail, asking questions and challenging assumptions were great contributions to the successful delivery of the project. He was quickly up to speed with our ways of working and fit into our team from day one.
Jakub was a pleasure to work with and made a strong impact in a short space of time. He was professional, reliable, and technically excellent, quickly became productive, and helped the team deliver business-critical work under challenging deadlines.
I am currently available for Outside IR35 contract engagements — remote and hybrid, UK-based. If you need a seasoned .NET / full-stack engineer who ramps up fast and delivers resilient, well-tested software on deadline — let's talk.