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Helgi S.

@Hrolgar

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5.0
6

4.6

4.6

100%

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

$55 USD / Hour

Flag of

Norway (11:45 AM)

Joined on May 21, 2020

$55 USD / Hour

I build backend systems, APIs, and integrations that work in production -- not just in demos. Recent deliveries: - Bittensor network monitoring bot with real-time surge alerts and subnet ranking (Python, Telegram) - AI-powered workflow automation pipelines with notification systems - Full portfolio site with CMS, automated CI/CD deploy, and analytics - Enterprise compliance platform (Blazor, Azure, Sanity CMS) - Trading backtesting engine -- Renko strategy conversion from PineScript to Python, full P&L and drawdown analysis - Regression analysis and statistical modeling for business datasets (Python, Excel) What I deliver: - API design and implementation (.NET, Node.js, Python, FastAPI) - System integrations -- third-party APIs, payment providers, data pipelines - Backend architecture -- clean, testable, production-ready - React/TypeScript dashboards and internal tools - Docker containerization and deployment - Data analysis, regression, Excel automation, trading tools Core stack: C#, .NET, Python, Node.js, TypeScript, Docker, PostgreSQL, REST APIs Portfolio: [login to view URL]

Verifications

On time

100%

On budget

100%

Accept rate

100%

Repeat hire rate

38%

Portfolio

Portfolio

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5.0 · 6 Reviews
Reviews
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Motti T.

5.0

$1,925 USD

19 days 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

21 days ago

Stamp Sheet Overprint Extraction

Excellent work, really quick turnaround, and great communication!

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Bogdan M.

5.0

$60 USD

29 days 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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Nicholas O.

5.0

£80 GBP

30 days ago

Surge alerts and Subnet ranking

Fantastic work again by Helgi. no fuss or trouble, in fact the upgrade was Helgi's idea. Easy to work with and communication is always 100%. Thanks so much Helgi.

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Nicholas O.

5.0

£87.55 GBP

1 month ago

Bittensor Bot upgrade and adjustment.

Superb work as always. Helgi goes above and beyond the remit of the project. thinking through problems that perhaps others would throw their hands up in frustration. Highly skilled and dedicated to completion of the job. another eleven out of ten delivery. cannot thank him enough.

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Experience

Head of Integrations

Dec, 2025 - Present

4 months, 8 days

Sparebank 1 Factoring

Dec, 2025 - Present

4 months, 8 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.

Flag of

Ålesund, Norway

Dec, 2025 - Present

4 months, 8 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

Certifications

Python Level 1

Python

US English - Level 1

US English

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