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TRCI-26-05569
Senior Backend Engineer (Python/FastAPI) — Industrial IoT Hub
Senior (7+ years) backend contractor to implement an IIDC Hub backend and provide technical mentoring. The role centers on Python/FastAPI services with async processing, PostgreSQL persistence (SQLAlchemy/Alembic), and industrial messaging/integration (MQTT/Sparkplug B, Protocol Buffers). Strong security fundamentals are required (authn/authz, secrets handling, audit trails) plus X.509/EST certificate integration using established libraries. Expect brownfield refactoring, code reviews, testing with pytest, and containerization with Docker in a Munich-based engagement.
Position summary
- Location
- Germany
- Workplace
- On-site
- Employment
- Contract
- Experience
- Minimum 7 years and Maximum 10 years
Role overview
Why This Role Matters.
Senior (7+ years) backend contractor to implement an IIDC Hub backend and provide technical mentoring. The role centers on Python/FastAPI services with async processing, PostgreSQL persistence (SQLAlchemy/Alembic), and industrial messaging/integration (MQTT/Sparkplug B, Protocol Buffers). Strong security fundamentals are required (authn/authz, secrets handling, audit trails) plus X.509/EST certificate integration using established libraries. Expect brownfield refactoring, code reviews, testing with pytest, and containerization with Docker in a Munich-based engagement.
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.
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Focus: IIDC Hub backend implementation and technical mentoring
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FastAPI, Pydantic, async processing
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SQLAlchemy, Alembic, PostgreSQL
05
MQTT/Sparkplug B, Protocol Buffers
06
API authentication/authorization, secrets, audit trails
07
X.509/EST integration using established libraries
08
pytest, Docker, brownfield refactoring and code review
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Nice to have: PKCS#11, industrial device management, React/TypeScript familiarity
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Reports to: Hub Team Lead, working with the System Architect
Technology stack
Tools & Technologies.
The platforms and technologies you'll use to build modern, enterprise-grade solutions.
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Python
Required
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FastAPI
Required
03
Pydantic
Required
04
asyncio
Required
05
SQLAlchemy
Required
06
Alembic
Required
07
PostgreSQL
Required
08
MQTT
Required
09
Sparkplug B
Required
10
Protocol Buffers
Required
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Protobuf
Required
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OAuth2
Required
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JWT
Required
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RBAC
Required
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secrets management
Required
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audit logging
Required
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X.509
Required
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EST
Required
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TLS
Required
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pytest
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
Python backend engineering (senior level, 7+ years)
FastAPI
Pydantic
Async processing (asyncio/async endpoints/background tasks)
PostgreSQL
SQLAlchemy
Alembic migrations
MQTT
Sparkplug B
Protocol Buffers (Protobuf)
API authentication and authorization
Secrets management
Audit trails / audit logging
X.509 certificate integration
EST (Enrollment over Secure Transport) integration using established libraries
pytest
Docker
Brownfield refactoring
Code review
Technical mentoring
Preferred
Nice to Have
PKCS#11
Industrial device management
React familiarity
TypeScript familiarity
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 Backend Engineer (Python/FastAPI) — Industrial IoT Hub
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