Arthur Onoszko

Senior Software Engineer

arthur.onoszko@gmail.com

What I value

Understand the need

Start with the problem, not just the request. I work with the people experiencing it to understand what is actually needed before deciding what to build.

Build things that matter

Technology is a means to make people’s lives or work better by saving time, reducing costs or freeing people to focus on work where they add more value. Technical quality matters, but usefulness comes first.

Stay open to learning and change

Today’s solution reflects today’s knowledge. I value well-reasoned opinions while staying open to new information, other perspectives and changing direction when the evidence calls for it.

About me

I’m a software engineer who likes solving real problems with simple solutions and helping teams turn those solutions into products that create value. I believe in owning what we build all the way to production: you build it, you ship it, you test it, you monitor it and you keep improving it.

I like working with people who are curious, willing to challenge how things are done and always looking for ways to improve. I’m comfortable connecting business needs, user perspectives and technical decisions, whether that means shaping direction with leadership, aligning a team or taking a product from idea to production.

Outside of work, I’m a dad to twin daughters and live in the countryside, where I enjoy being close to nature. I like music, gardening and woodworking, and I think it’s important to have a few things in life that have nothing to do with software.

Experience

Since 2012

Software engineer @ Forefront Consulting

December 2025 to present

Software engineer consultant working across product development, fullstack delivery and data-driven decision support. Works with product teams and stakeholders to turn business needs into maintainable software and useful decision support.

Projects

Software engineer @ Ericsson2026 to present

Presented data from multiple source systems as OKRs and KPIs, giving C-level leadership a shared basis for future strategic initiatives and decision-making. Also focused on improving the performance and scalability of the services being built, making them easier to deploy, monitor and operate in production, while introducing automated testing in CI/CD to catch real-world issues.

Data visualizationOKRKPIData integrationClaude CodeAngularNodeNestJS
Software engineer @ ICA2026

Built and presented a proof of concept integrating with Google Looker to evaluate it as a replacement for an existing dashboarding tool. The custom dashboards demonstrated capabilities beyond the standard Looker interface, leading to a follow-up project for full implementation.

Google LookerData visualizationCustom dashboardsNodeNestJSVueGithub Copilot
Software engineer @ Adzcut2026

Developed a dynamic form product that lets customers assess and track their cybersecurity posture over time. Designed the configurable question flow so Adzcut could guide customers toward improvement, while keeping the product adaptable as the business evolves.

.NETReactFullstack developmentAIGitHub Copilot

Co-founder, software engineer @ Oak, Guided Wine Tasting

July 2017 to present

Co-founded and operated a consumer product for guided wine tastings at home. As the sole technical owner, I built and operated the iOS app and supporting services, while also contributing to the tasting experience, product strategy and continuous improvement based on customer feedback.

SwiftXcodeGoogle FirebaseRealmRxSwift

Co-founder, software engineer @ Lingo AB

September 2015 to present

Co-founded and operated iPad products that help children with speech disabilities practise communication. As the sole technical owner, I was responsible for the technology end to end and contributed to product strategy and prioritisation, working around the needs of children, families and professionals.

Unity3DC#WordpressAdobe IllustratorAzureGoogle Firebase

Software engineer @ Växa

August 2025 to December 2025

Software engineer in a team developing digital health declarations used in livestock sales between farms. Focused on simplifying the existing design and architecture and introducing automated testing to improve the quality and maintainability of the system. Worked with .NET and Blazor Server, integrating data from internal services through scheduled Quartz jobs.

.NETBlazor ServerArchitectureUnit testingTDDFunctional testingAzure DevOpsQuartz.NET

Software engineer @ Forefront Consulting

August 2022 to August 2025

Designed and delivered backend systems and integrations where reliability, observability and safe modernization were central concerns.

.NETAzureArchitectureEvent based architectureDevOpsAutomated testing

Projects

Software engineer @ Trygghetsrådet (TRR)2025

Developed .NET services integrating with SAP and internal systems through Azure Service Bus, with a focus on reliable data during an SAP upgrade.

.NETAzureAzure FunctionsAzure Service BusEvent based architectureBicepCosmos DB
Software engineer / Tech lead @ CIKO2024 to 2025

As tech lead, modernized CIKO’s CRM and case-management platform while keeping the existing systems running in daily operations. Replaced legacy VBA and SQL Server stored procedures with C# services using RabbitMQ and NServiceBus, built Azure DevOps pipelines for on-premises deployments, and worked closely with the CEO/CTO on technical strategy.

.NETRabbitMQNServiceBusAzure DevOpsDevOpsSQL ServerProduct development
Software engineer @ Avtalat2022 to 2023

Backend developer in the Platform & Integration team, building .NET data services in a largely event-driven architecture and integrating data from external systems such as Alecta, Collectum and Syna. Focused on reliability and quality using patterns such as Outbox and Saga, with continuous work on simplifying code, architecture and testing.

.NETMassTransitEvent based architectureAzure Service BusRabbitMQPrometheusGrafanaApplication Insights

Software engineer @ Leeroy

March 2021 to August 2022

Developed restaurant systems spanning POS, kitchen displays and customer ordering. Worked across mobile, web and backend services, including domain modelling for a progressive web app.

SwiftReactProgressive Web AppJava SpringNodeJSTypeScriptGraphQLAWSReact NativeRavenDBMongoDB

Consultant, software engineer @ Above

December 2020 to February 2021

Designed and developed a resource-booking platform with web, mobile and backend applications, hosted in GCP and provisioned with Terraform.

GoGraphQLReactFlutterTerraformGCP

Consultant, software engineer @ Epinova AB

November 2019 to November 2020

Working in a team that maintains and develops a number of client applications.

Episerver CMS.NETVueSASSArchitecture

Projects

Software engineer @ Episerver AB

Developing a new version of episerver.com, both backend and frontend.

Episerver CMSEpiserver CommerceSASSReact

Consultant, software engineer, tech lead @ Forefront Consulting AB

October 2018 to November 2019

Working in a team that maintains client applications and helping guide junior developers.

Episerver CMS.NET.NET CoreArchitectureTech Lead

Consultant, iOS engineer @ Bontouch AB

May 2017 to May 2018

Maintenance of the PostNord app in Sweden, Denmark, Finland and Norway.

Objective-CSwiftXcodeBitbucketJira

Software engineer @ Forefront Consulting AB

September 2013 to April 2016

Projects

Software engineer @ Confederation of Swedish Enterprise

Developing a web portal to manage event invitations, front-end and back-end.

AngularJSASP.NET WebAPIC#SQL
Software engineer @ LIF Service AB

Developing a new external website and member portal, front-end and back-end.

Episerver 7+ CMSHTML5LESSTarget ProcessC#
Information architect, technical project manager @ Teknikföretagen Sverige AB

Developing a web based inventory system and leading a team of developers in China.

Target ProcessC#
Technical project manager, QA, architect @ Svensk Handel AB

Developing a web based booking system for meeting rooms and resources and leading a team of developers in China.

Target ProcessC#Exchange
Software engineer @ Confederation of Swedish Enterprise AB

Developing a new iOS application and Web API.

Objective-CXcodeASP.NET WebAPITarget Process

Software engineer @ Skantze Konsult och Ledarskap AB

February 2012 to April 2016

Developing Ingredienslexikon, a smartphone application for individuals with food allergies.

Objective-CXcodeAndroidEclipse

Languages

  • Swedish★★★★
  • English★★★★
  • Polish★★☆☆

Education

2008 to 2013

Master of Science @ KTH Stockholm

Medical engineering, focus on IT

Master thesis @ Tobii Technology AB

Creation of a virtual keyboard to increase text input rate by eye tracking.