Deion Heijn
Deion Heijn

Senior Developer

Open to offers · Member since 13 Nov 2026
Location
Lima, Peru
Desired salary
from 3000 USD/monthly
Work preference
On-site
Experience level
Senior

About

Professional summary

I am a software developer with more than seven years of hands-on experience building software solutions, ERP systems, and third-party application integrations.

I specialize in aligning technical implementations with business objectives, including sales, income tracking, order management, warehouse visibility, and access-control solutions.

I work with C#, .NET, ASP.NET Core, SQL Server, HTML, CSS, RESTful APIs, Azure, and CI/CD practices. I also use Postman and AI-assisted development tools to support efficient delivery.

I have experience leading integrations with external software and logistics APIs, as well as troubleshooting systems and improving application performance and reliability.

I am comfortable acting as a project leader and collaborating with clients, external stakeholders, and development teams in Agile Scrum environments.

I am a native Dutch and English speaker with intermediate Spanish, based in Lima, Peru.

Notice period: Immediately

Skills

12 capabilities

Tech stack & tools

Working toolkit

Application Hosting

Application Utilities

Languages & Frameworks

Experience

Career history

Junior Developer Abstract IT

I develop and implement ERP systems for global clients, supporting business processes such as sales, income tracking, and order management.

I design and deploy interfaces and dashboards that provide real-time stock visibility across multiple locations. I also coordinate with external stakeholders, support client-facing delivery, troubleshoot systems, and help ensure seamless software integration.

Junior Developer Generation IT

I designed and implemented ERP systems tailored to client requirements, including dashboards that improved warehouse management efficiency.

I led third-party software integrations to improve interoperability and data flow. I also performed IT troubleshooting and system performance optimization to maintain reliable operations.

Senior Developer / Project Leader Bluefield Smart Access

I developed electronic door access systems for Dutch municipalities, improving security and enabling real-time and historical visibility of guests and personnel on site.

I engineered user-friendly software that communicated with electronic locks to provide comprehensive access control. I also worked on integrations for PSH and Fruitmasters, including FedEx and TNT APIs.

Education

Learning history

Universiteit Utrecht

BSc, Information Science

Bachelor of Science in Information Science.

Universiteit Utrecht

Foundation Year, Game Technology

Foundation Year in Game Technology.

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