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TRCI-26-04424
Senior.NET Developer (Workflow Engine Development & Migration)
Senior.NET developer needed in Lund (contract) to extend a Workflow Engine platform and migrate existing standalone.NET services onto it. The work includes translating existing C# business logic into workflow/configuration, building platform components and configuration tools, implementing integrations and messaging, and validating that migrated workflows preserve current behavior. Strong backend/API skills, distributed/integration-heavy systems, async messaging, observability, and configuration-as-code are central; Docker/Kubernetes and industrial/protocol integrations (e.g., OPC UA, MQTT) are valuable.
Position summary
- Location
- Sweden
- Workplace
- On-site
- Employment
- Contract
- Experience
- Minimum 5 years and Maximum 10 years
Role overview
Why This Role Matters.
Senior.NET developer needed in Lund (contract) to extend a Workflow Engine platform and migrate existing standalone.NET services onto it. The work includes translating existing C# business logic into workflow/configuration, building platform components and configuration tools, implementing integrations and messaging, and validating that migrated workflows preserve current behavior. Strong backend/API skills, distributed/integration-heavy systems, async messaging, observability, and configuration-as-code are central; Docker/Kubernetes and industrial/protocol integrations (e.g., OPC UA, MQTT) are valuable.
Your Impact
Deliver Enterprise Value
Help organisations solve complex business problems through modern technology, consulting expertise and measurable outcomes.
Collaboration
Work Across Teams
Collaborate with consultants, architects, engineers and client stakeholders throughout the project lifecycle.
Growth
Learn Continuously
Gain exposure to enterprise technologies, certifications, mentoring and real-world project experience.
Career Path
Grow With Ubique
Build a long-term consulting career with opportunities to take on greater responsibility and leadership over time.
Responsibilities
What You'll Be Doing.
Every role at Ubique contributes directly to solving meaningful business challenges for our clients.
02
We are looking for a Senior.NET Developer to support the continued development of our Workflow Engine (WFE) and the migration of existing.NET services to the new platform.
03
Today, we have several standalone.NET applications, each containing its own business logic and integrations. The long-term goal is to migrate these services to WFE and represent their business logic through workflows and configuration rather than maintaining separate applications.
04
Migration assessment reports have already been prepared for the existing services. These assessments describe the migration approach for each application and identify which WFE components and capabilities are already available and which still need to be developed.
05
The role therefore combines both strong platform development and strong service migration.
06
Migrate existing.NET services to WFE based on the defined migration plans.
07
Translate existing C# business logic into WFE workflows and configuration.
08
Develop tools around the WFE e.g. configuration tools.
09
Configure and validate workflows for migrated services.
10
Ensure migrated workflows preserve the expected behaviour of the existing applications.
11
Troubleshoot technical issues discovered during development and migration.
12
Contribute to architecture and implementation decisions within WFE.
Technology stack
Tools & Technologies.
The platforms and technologies you'll use to build modern, enterprise-grade solutions.
01
C#
Required
02
.NET
Required
03
.NET services
Required
04
Backend
Required
05
REST
Required
06
HTTP APIs
Required
07
RabbitMQ
Required
08
MQTT
Required
09
OPC UA
Required
10
Docker
Required
11
Kubernetes
Required
12
JSON
Required
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Configuration as Code
Required
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Event-driven architecture
Required
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Distributed systems
Required
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Systems integration
Required
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Workflow engine
Required
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Rules engine
Required
19
Observability
Required
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Logging
Required
Requirements
Skills & Experience.
We value curiosity, collaboration and continuous learning. If you don't meet every requirement but believe you can make an impact, we'd still love to hear from you.
Essential
Required Qualifications
C#
.NET
Backend service development
API development
REST/HTTP APIs
Distributed systems
Systems integration / integration-heavy systems
Asynchronous processing
Messaging (e.g., RabbitMQ/MQTT or similar)
Event-driven architecture
Workflow engines and/or rules engines
Configuration-driven systems
JSON-based configuration
Platform design / reusable component design
Observability and logging (incl. distributed tracing concepts)
State management and persistence
Troubleshooting/debugging
Preferred
Nice to Have
RabbitMQ
MQTT
OPC UA
Docker
Kubernetes
Distributed tracing
Integration patterns (e.g., pub/sub, request-reply, idempotency, retries)
Configuration tools development
What you'll gain
More Than Just A Job.
We're committed to helping every team member grow professionally, personally and technically while working on meaningful projects.
Global Exposure
Collaborate with international clients and multicultural teams on enterprise programmes.
Continuous Learning
Expand your expertise through mentoring, certifications and hands-on project experience.
Career Growth
Take ownership, develop leadership skills and grow your consulting career over time.
Flexible Working
Hybrid and remote collaboration designed around trust and delivering exceptional outcomes.
People First
Join a supportive culture where collaboration, respect and long-term relationships come first.
Enterprise Projects
Work on meaningful technology initiatives for leading organisations across industries.
Apply
Apply for Senior.NET Developer (Workflow Engine Development & Migration)
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