Kalyna Solutions AB

Assignment

I work with DevOps at Carmenta.

Contribution

I contribute experience in software development and DevOps.

Technologies

Assignment

Developer at the Swedish Authority for Privacy Protection (IMY), working on DevOps pipelines, application infrastructure and release management. We built a variety of applications in a cross-functional team.

Contribution

I improve development processes by optimising Azure DevOps workflows and contributing to technical decisions. My role also involves programming in C# and .NET, reviewing code and working with business stakeholders.

Technologies

Assignment

Senior developer in a cross-functional team of six colleagues, including two programmers. Together we develop a web-based case management system for external users and case officers.

Contribution

I contribute through hands-on development, implementation decisions and support for fellow programmers. Together with the team's architect, I also meet with external parties to discuss system integrations.

Technologies

Assignment

Develop a solution that consolidates data into a data warehouse.

Contribution

Working with a project manager, I developed a solution that automatically consolidates database tables and Excel files into a data warehouse, helping the customer gain more business value from their data. I worked independently, staying in close contact with end users to gather feedback and deliver iterative improvements.

Technologies

Assignment

As co-founder of a startup, I developed a prototype service for creating receipts for second-hand purchases.

Contribution

I built a web service from scratch and set up its production environment and continuous deployment. Working with the other founders, I implemented features based on their requests and feedback, and integrated a third-party service for signing PDF files.

Technologies

Assignment

Developed integrations between back-office and trading systems, as well as internal applications used by brokers to manage customers' securities portfolios, in a team of four to five developers.

Contribution

Daniel worked as both software developer and scrum master, representing the team at Scrum of Scrums and architecture meetings. He helped successfully deliver the team's systems during a back-office system replacement, then continued developing their applications and microservices. Alongside new features, he migrated codebases from .NET Core 3.1 to .NET 6 and added unit tests and automatic database updates to the CI/CD pipeline. He regularly reviewed code, wrote release notes, deployed microservices and resolved urgent user issues. His team leader and manager valued his initiative and willingness to work across all parts of the systems.

Technologies

Assignment

Led six colleagues developing in WPF, AWS and Flutter. The team built the graphical interface for the upcoming CELLCYTE X microscope, which researchers can schedule to photograph cell samples.

Contribution

Daniel worked with the product owner to turn feature requests into technical requirements. He provided estimates, designed interfaces and removed obstacles for the team. He supported colleagues, planned and assigned tasks, tested and reviewed their work, and managed software releases. Together with the embedded team leader, he designed the APIs between the systems. He also investigated bugs reported by testers, contributed code and worked with sales staff and installers to provide technical support and gather feedback.

Technologies

Assignment

Built a Windows application from scratch in a team of two to seven developers for the upcoming CELLCYTE X microscope, which researchers can schedule to photograph cell samples.

Contribution

Daniel and his colleagues built a Windows-based WPF application from scratch. His knowledge of the microscope's embedded system helped him onboard colleagues and contribute to integration. As the team varied considerably in size, he became an important point of continuity. He also took substantial responsibility for software releases and implemented automated unit and GUI tests.

Technologies

Assignment

Developed the embedded system for the upcoming CELLCYTE X microscope with two colleagues. The microscope allows researchers to schedule photographs of cell samples.

Contribution

Daniel worked on an embedded Linux (ARM) system built with Yocto, extending the C++17 application that contained most of its logic. He implemented storage of experiment data in SQLite with automatic database schema updates. He also worked on Python scripts, hardware calibration and changes to the microscope's 3D printer software, written in C and based on Marlin Firmware. The team used test-driven development with high unit-test coverage requirements.

Technologies

Assignment

Daniel and two colleagues helped port an embedded software solution written in C and assembly to another hardware platform with a different digital signal processor (DSP).

Contribution

Daniel implemented configuration data transfer from Linux on the ARM processor core to the DSP core, enabling control of settings such as volume and equalisation.

Technologies

Assignment

Developed an iPad app demonstrating clinical instruments for endovascular surgery. Daniel was initially the sole iOS developer and became lead developer for two colleagues in two follow-up projects.

Contribution

Daniel implemented a surgical simulation with 3D models of surgical instruments. He also integrated a physical instrument communicating with the iPad over Bluetooth (BLE), allowing users to perform selected steps of the procedure. The customer received the project well, leading to two follow-up projects with Daniel leading two colleagues.

Technologies

Assignment

Daniel led two developers in planning and implementing a new version of a web application where doctors could launch exercises in a surgical simulator and review previous results. The new version added advanced metrics collection, benchmark comparisons, multiple languages and configurable simulator exercises.

Contribution

Daniel participated from requirements through implementation. He defined work packages and estimates, drew interface mockups and created entity-relationship diagrams for the new database model. After the customer approved the plan, he implemented a large part of the backend and frontend alongside two colleagues, meeting regularly with the customer for feedback. The customer was very pleased with the result.

Technologies

Assignment

Led two colleagues in planning and rewriting a configuration application for monitoring systems that detect gas leaks aboard cargo ships.

Contribution

Daniel worked from requirements through implementation, conducting a feasibility study with work packages, estimates and interface mockups. He then took responsibility for software architecture, customer communication and much of the implementation. He assigned tasks, tested and reviewed colleagues' work, and integrated the monitoring system's C++ configuration parser into the C#/WPF application. He used test-driven development with automated unit and GUI tests and handled the handover when Consilium took over maintenance.

Technologies

Assignment

Solely responsible for maintaining and developing a large Windows application used on ships' bridges to visualise all fire detectors across the decks and their status.

Contribution

Daniel added features, improved the interface and performance, fixed bugs and provided technical support. The interface used C# and WPF, while the communication layer used C++. He also developed a simulator to replay and simulate fire-system traffic for testing and demonstrations. The customer particularly appreciated his help during evenings and weekends when needed. He also fixed bugs in the legacy application, built with C++, MFC and Visual C++ 6, which remained in use on some ships.

Technologies

Assignment

Solely responsible for maintaining and developing Consilium's Aras Innovator installation, a PLM system documenting components, documents, change history and software for fire and gas safety products.

Contribution

Daniel worked on both frontend and backend, adding features for data presentation, exports and permissions. He also upgraded Aras Innovator to new versions.

Technologies

Assignment

Solely responsible for porting an advanced Excel workbook with around 30 linked worksheets to Python. The workbook estimated server load based on a mobile operator's traffic, providing input for customer quotations.

Contribution

Daniel independently carried out the migration and implemented more advanced modelling that had not been possible in Excel. He also built a graphical web interface.

Technologies