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Helgi S.

@Hrolgar

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5.0
9

5.5

5.5

100%

Backend Engineer | C#/.NET | Python | APIs

$55 USD / Hour

Flag of

Norway (7:31 PM)

Joined on May 21, 2020

$55 USD / Hour

I'm a backend engineer with a full-time role in the Norwegian financial sector, building production .NET systems where reliability and correctness aren't optional. I freelance on focused project work where the job is to solve a real problem and ship something that works. You get someone who reads the spec properly, asks the right questions, and hands back clean code without needing to be managed. My background is enterprise software: C#/.NET, ASP.NET Core, Entity Framework, background services, and the kind of API and data work that has to survive real users and real money. I bring that same standard to freelance projects: clean architecture, sensible error handling, and no shortcuts that bite you in production. What I build: • APIs and integrations. REST API design, third-party platform integrations, OAuth, webhooks, payment and booking flows. If it needs to talk to another system reliably, that's my lane. • C#/.NET backends. ASP.NET Core services, EF Core, migrations, background jobs and scheduled workers. • Python backends and automation. FastAPI services, data pipelines, scrapers, and automation scripts. Practical Python that does a job, not a science project. • SaaS and web apps. Full-stack work with React front-ends on Python or .NET backends, including multi-tenant systems and property-management and channel-sync platforms with live third-party data. • Web automation and browser extensions. Chrome (Manifest V3) extensions, Playwright automation, and the messy real-world problems that come with anti-bot systems and live sites. How I work: I scope honestly up front. If something's a bad idea, I'll tell you before you pay for it. I favour the simplest solution that solves the actual problem over the most impressive-looking one. Communication is clear and async, no daily standups required and no chasing me for updates. Every project I've delivered here is 5 stars, and a good share of my clients come back. If you've got a backend, API, integration, or automation problem, send me the details. I'll tell you straight whether I'm the right fit, what it'll take, and how long. Portfolio and more about me: [login to view URL]

Verifications

On time

100%

On budget

100%

Accept rate

100%

Repeat hire rate

31%

Portfolio

Portfolio

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5.0 · 9 Reviews
9 Reviews
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murtazind

5.0

$250 USD

10 hours ago

DevOps Engineer: Minimalist Linux Mail Transport (MTA) & Netplan /28 Subnet Routing

Helgi is an absolute master of enterprise mail infrastructure. He took a bare-metal Hetzner node and built a bulletproof, high-concurrency open-source Postfix + Mautic architecture with precision. He secured our Port 25 unblock on the first try, configured flawless rDNS across a /28 subnet, and delivered containerized single-tenant environments with a comprehensive Runbook. Exceptional communication and delivered ahead of schedule. Will definitely hire again for future clusters!

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Sahil N.

5.0

₹150,000 INR

1 month ago

Amazon Hiring Chrome Extension

Excellent freelancer! Delivered high-quality work on time and exceeded my expectations. Communication was clear throughout the project, and they were very responsive to feedback. Highly skilled, reliable, and professional. I would definitely work with them again and highly recommend their services.

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Motti T.

5.0

$1,925 USD

2 months ago

FinancialControl MVP – CSV ingestion, rules engine

The best freelancer I ever work with! With his help, I am building several support and management systems for my company. Helgi is a high-quality and diligent professional and identifies my needs before I even recognize them. I will definitely continue to work with him in the future.

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Ahmed A.

5.0

$200 USD

2 months ago

Stamp Sheet Overprint Extraction

Excellent work, really quick turnaround, and great communication!

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Bogdan M.

5.0

$60 USD

2 months ago

Fix REST API Response Issue

Quick and experienced developer , did understand quickly and made the changes that was needed, will use him again. Recommended

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Experience

Head of Integrations

Dec, 2025 - Present

5 months, 9 days

Sparebank 1 Factoring

Dec, 2025 - Present

5 months, 9 days

Full-stack development in the Norwegian financial sector. C#/.NET backend services, REST API design, system integrations, SQL Server architecture, and internal tooling. Work with regulated systems requiring high code quality and security standards. Head of integrations.

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Ålesund, Norway

Dec, 2025 - Present

5 months, 9 days

Senior Software Engineer & Partner

Jul, 2023 - Dec, 2025

2 years, 5 months

Xlent

Jul, 2023 - Dec, 2025

2 years, 5 months

Fullstack developer

Jul, 2023 - Dec, 2025

2 years, 5 months

Software Engineer

Jan, 2019 - Jun, 2023

4 years, 4 months

Leba

Jan, 2019 - Jun, 2023

4 years, 4 months

Fullstack developer

Jan, 2019 - Jun, 2023

4 years, 4 months

References

P

Petter H.

@petterh2

·

Direct Manager

I am writing to give my recommendation for Helgi, who worked with us at Nordvik Digital AS as a developer for two years. Helgi was responsible for building and maintaining several of our internal systems and customer-facing applications. He is very skilled in .NET and also took on frontend work when it was needed, which was not something we expected when we hired him. He has a good understanding of the whole picture, not only the code but also servers, deployment, and how things should work together. He is the type of person who finds solutions on his own. We had a situation where our deployment process was manual and took many hours each time. Helgi set up automated pipelines and containerization so that everything went much smoother. This saved us a lot of time and reduced errors. What I appreciated most is that he is honest and straightforward. If something is not possible or will take longer, he says it directly. He works well in a team but is also very capable of working independently, which for us was important since we are a small company. I can recommend Helgi for any development position. He will be a good addition to the team. Best regards, Petter Haugen Technical Lead Nordvik Digital AS Ålesund, Norway

Education

Universitetet i Oslo

2013 - 2016

3 years

Social Sciences

Flag of

Norway

2013 - 2016

3 years

Qualifications

Python Developer

2021

Python Software Foundation

Accredited Python Developer proficient in creating efficient and versatile applications using the Python programming language.

2021

Microsoft Azure Solutions Architect

2022

Microsoft

Certified Azure Solutions Architect with in-depth knowledge of designing and implementing cloud solutions on Microsoft Azure.

2022

TypeScript Developer

2022

TypeScript Foundation

Accredited TypeScript Developer proficient in building type-safe, maintainable web and server applications.

2022

Publications

Self-Hosted AI Agents with Claude Code and Proxmox

2025

dev.to

A walkthrough of building a personal autonomous agent platform on a single Proxmox host: Claude Code as orchestrator, role-specific worker VMs (backend, frontend, reviewer, devops, testing) dispatched over JSON-RPC. Covers the practical bits — keeping credentials fresh across worker users, scoping tasks so a 5-minute Sonnet run beats a long Opus one, and the operational scaffolding (memory hygiene, session notes, async kanban) that makes a one-engineer setup actually work.

2025

Certifications

P

Preferred Freelancer Program SLA

Python Level 1

Python

US English - Level 1

US English

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