About us

NxtPort is building the next digital link in the digital port infrastructure of the Port of Antwerp-Bruges and is developing platforms to make the cargo flow in the port faster, safer, and more efficient.

Job Description:

About the role

Are you an experienced .NET Developer who enjoys thinking at an architectural level?

As a Developer – Solution Designer, you are the link between business objectives and technical implementation within complex maritime environments. You work end-to-end: from analysis, design, and development to integration, testing, and support. You translate functional needs into high-performance, scalable, and secure solutions within the Microsoft .NET and Azure ecosystem.

You build solutions that connect port terminals, transport companies, gate and badge systems, and various EDI/EDIFACT flows. You work closely with architects, analysts, infra and security teams, and guard the coherence between domain logic, integrations, and infrastructure.

Your responsibilities:

• Develop and maintain .NET (C#) applications and RESTful APIs according to SOLID, Design Patterns, DDD, CQRS, and Clean Architecture.

• Translate functional requirements into technical designs and implementations in line with enterprise and security standards.

• Design event-driven and microservice-based solutions with Azure Service Bus, Event Grid, and Event Hubs.

• Integrate Azure components such as App Services, Functions, App Configuration, Key Vault, API Management, Logic Apps, and Application Insights.

• Work with SQL Server, Dapper, and Entity Framework Core, including performance optimization, transactions, and indexing.

• Create interface and data models, API specifications, and sequence/component diagrams.

• Define non-functional requirements (performance, scalability, availability, security, compliance).

• Guide teams in applying DDD-bounded contexts, command and query separation (CQRS), and domain-driven modeling.

Integration & Domain Knowledge

• Design and develop EDI/EDIFACT flows (IFTMIN, CODECO, COARRI, IFCSUM), including validation, mapping, and error handling.

• Integrate with port and transport-related systems (Alfapass, PCS, TOS, carriers, gate access).

• Ensure data quality, traceability, auditing, and data security across multiple domains.

• Build robust integrations with OAuth2/OIDC, Azure Entra ID / B2C, RBAC, mTLS, and Managed Identities.

DevOps, Testing & Observability

• Implement CI/CD via Azure DevOps (YAML/Classic), GitHub, and ArgoCD (GitOps), including deployment via Bicep.

• Cloud-native development with Infrastructure as Code (Terraform/Vault).

• Test automation with xUnit/NUnit, TDD where relevant, and API contracts via Swagger/OpenAPI.

• Monitoring and observability via App Insights, Log Analytics, dashboards, and Queue Explorer.

• Root-cause analyses and structural solutions for incidents (3rd-line support).

Stakeholder & Team Coordination

• Collaborate with product owners, analysts, developers, and security experts to deliver well-supported solutions.

• Present technical designs to both technical and non-technical stakeholders.

• Mentor developers in design principles, best practices, and secure coding.

• Participate in design reviews, technical workshops, and knowledge sharing within the team.

• Conduct research and take ownership to introduce new standards or technologies.

Profile:

• Bachelor’s or master’s degree in (applied) computer science or equivalent experience.

• At least 5–8 years of experience in software development and/or solution design within a .NET and Azure environment.

• Experience with government institutions in the maritime logistics sector is a must.

Thorough knowledge of:

• .NET 6/7/8, C#, OOP, SOLID, DDD, CQRS, event-driven concepts, Clean Architecture

• Azure Services: App Services, Functions, Service Bus, Event Grid, ADF, App Insights, App Config, Key Vault, API Management, Logic Apps, Storage, Container Apps/Kubernetes

• Security & compliance: NIS2, ISO-27001, Zero Trust, OAuth2/OIDC, RBAC, Managed Identities, Azure Entra ID / B2C

• Data & integration: SQL Server, Dapper, EF Core, API Gateway, REST, EDI/EDIFACT, XML, JSON, Azure Cosmos DB

• DevOps: Azure DevOps, GitHub, YAML pipelines, ArgoCD, Terraform/Vault, Bicep

• Testing & monitoring: xUnit/NUnit, Postman, Swagger, Application Insights, Log Analytics, Queue Explorer

• Frontend integration (Blazor, React) is an asset

Practical:

• Fixed office days of at least 2 to 3 days, with the possibility to work from home

• Assignment can be extended after a positive evaluation

• Nxtport reserves the right to ask consultants with self-employed status about their daily rate

• Workplace: Havenhuis. If travel is necessary, it will be arranged according to the agreements in the assignment letter

• Security screening:
  All consultants/freelancers who will be employed at Nxtport are subject to security screening: This screening consists of a comprehensive investigation into a person’s background and reliability. This investigation is conducted by consulting various judicial and police databases. The purpose is to assess whether a person is reliable enough to perform a critical function and/or to gain access to sensitive infrastructure. The screening applies to numerous sectors, including the port sector.

When submitting the proposal, the Supplier must agree to propose only Consultants who are willing to undergo this security investigation.

The security investigation process can take up to 30 days: the Supplier accepts this waiting period and ensures that the candidate remains available throughout the screening process.

Only the Consultant(s) of the Supplier selected by the Client for this contract will be subject to the security investigation. The Security Officer of the Client (as administrative authority) forwards the individual request for security investigation to the competent Federal Police, which prepares a security advice based on the investigation.

A negative security advice will be communicated to the Consultant concerned by the Client’s Security Officer (as administrative authority). This notification states the reasons justifying this decision, except for information whose communication could harm the fundamental interests of Belgium or the State. The notification also contains information about the possibility of appeal against this decision.

If there is no positive security result (for example, when no advice can be given) from the Federal Police, the vacancy will be terminated without contracting.

If the positive security advice is lost during the contract period, the contract will be terminated without any compensation.