20 beste Stellen als software developer in köln – aktuell auf Personalsuche

.NET/Python Software Developer | Energy Sector
Etinars —Köln
- 475 € – 500 € pro Tag
- Azure
- Master
- APIs
Direkt bewerben
FULL STACK WEB DEVELOPER*IN
SnapNext GmbH + Co KG —Pulheim
- Vollzeit
- Hybrides Arbeiten
- Azure
- Master
- AWS
Full Stack-Developer .NET (m/w/d)
Bochmann & Oborski GmbH —Erftstadt
- SQL
- JavaScript
- Flexible Arbeitszeiten
Full-Stack-Developer (m/w/d)
I-D Media GmbH —Köln
- Teilzeit
- Informatik
- Informatik
- Java
- Weiterbildungsprogramme
- Aufstiegsmöglichkeiten
Senior Full Stack Developer (all genders)
Expleo —Köln
- Englisch
- Java
- Datenbanken
- Gleitzeit
- Homeoffice-Möglichkeit
Windows Driver Developer (m/w/d)
ROHDE & SCHWARZ GmbH & Co. KG —Köln
- Online-Bewerbung
- Englisch
- Windows
- C++
- Weiterbildungsprogramme
6 Tage
IT Application Developer (m/w/d)
Quarzwerke GmbH —Frechen
- Vollzeit
- Oracle
- DevOps
- Englisch
- Gleitzeit
- Weiterbildungsprogramme
Direkt bewerben
Frontend Developer (m/w/d)
cronn GmbH —Bonn
- Englisch
- Java
- Softwareentwicklung
- Umzugskostenzuschuss
- Weiterbildungsprogramme
Senior Software Developer & Consultant (m/w/d)
Objektkultur Software GmbH —Bonn
- 60.000 € – 80.000 € pro Jahr
- Online-Bewerbung
- Azure
- Informatik
- SQL
- Flexible Arbeitszeiten
Tax-Tech Developer (m/w/d)
INFOLOG GmbH Management-Informations-Logistik —Köln
- Vollzeit
- Mitarbeiter-Rabatt
- Flexible Arbeitszeiten
QA Engineer (m/f/x)
Cofinity-X GmbH —Köln
- Vollzeit
- Hybrides Arbeiten
- Agile
- Flexible Arbeitszeiten
Direkt bewerben
Platform Engineer mit Fokus auf Developer Experience (m/w/d)
REWE digital —Köln
- Online-Bewerbung
- Java
- JavaScript
- APIs
- Flexible Arbeitszeiten
Senior Software Architect / Lead Developer (m/w/d)
Ampada GmbH —Köln
- Vollzeit
- Hybrides Arbeiten
- Azure
- Oracle
- Englisch
- Homeoffice-Möglichkeit
- Mitarbeiter-Rabatt
Direkt bewerben
3 Tage
Senior Software Development Engineer - Pagero
Thomson Reuters —Langenfeld
- Vollzeit
- Hybrides Arbeiten
- Datenbanken
- SQL
- APIs
- Homeoffice-Möglichkeit
Java Developer (m/w/d)
Bitech AG —Hürth
- Azure
- Englisch
- Java
- Weiterbildungsprogramme
- Flexible Arbeitszeiten
iOS App Developer (m/w/d)
08EINS AG SOFTWAREHAUS —Bonn
- Softwareentwicklung
- Homeoffice-Möglichkeit
- Flexible Arbeitszeiten
Developer Android (Mensch)
RockAByte GmbH —Köln
- Teilzeit
- Java
- Weiterbildungsprogramme
- Flexible Arbeitszeiten
Frontend Developer (m/w/d)
GSG GmbH —Köln
- Informatik
- Weiterbildungsprogramme
Direkt bewerben
Backend Developer C# / .NET / Java (w/m/d)
SprintEins GmbH —Bonn
- Englisch
- Java
- APIs
- Weiterbildungsprogramme
Developer Flutter (Mensch)
RockAByte GmbH —Köln
- Teilzeit
- Weiterbildungsprogramme
- Flexible Arbeitszeiten

Ich möchte aktuelle Job-E-Mails für Stellen als software developer in köln erhalten

Wenn Sie sich bei Ihrem Konto anmelden, stimmen Sie den Nutzungsbedingungen, den Richtlinien zur Verwendung von Cookies sowie der Datenschutzerklärung von SimplyHired zu.

Weitere Job-Standorte erkunden

software developer jobs near köln

.NET/Python Software Developer | Energy Sector

Etinars
Köln

Direkt bewerben

Details zur Stelle

Freie Mitarbeit
475 € – 500 € pro Tag

Qualifikationen

CI/CD
Azure
Rust
Kubernetes
.NET
Master
PostgreSQL
Verteilte Systeme
Scala
Redis
GitHub
APIs
Agile
Swift
Python

Vollständige Stellenbeschreibung

WHO WE ARE

Etinars is a values-focused company with multi-year experience, specialised in the recruitment of professionals for niche markets, managing the full life-cycle of specialist and executive-level hires.
At Etinars, we genuinely care about who you are and what you need.
We place great emphasis on fostering robust, enduring connections built upon trust and transparency.
Our approach ensures a swift journey, leading you hand in hand towards signing your next career step.

WHAT WE ARE LOOKING FOR

.NET/Python Software Developer | Energy Sector

Join our client large international organisation active in the energy sector, contributing to real-time energy management & balancing and solutions that support the energy transition. You will work on real-time software products that help balance the electric grid and connect physical assets (e.g., batteries, renewable parks) to internal systems for forecasting and optimisation.

In this role, you will work 2 days per week onsite in Brussels and the rest remotely, collaborating closely with multidisciplinary stakeholders and technical teams in an international environment.

We are looking for a Software Developer with 3+ years of experience, strong skills in .NET or Python (interest in both), and exposure to event-driven architectures, distributed systems, and Kubernetes.

For this role, relocation to Brussels (Belgium) is mandatory for candidates living far from the area, or the ability to commute regularly.

Languages required: English (B2+) due to daily interactions with teams and stakeholders. French is a plus.

YOUR TASKS

Clarify needs with functional analysts and domain experts.
Produce technical designs and architectural proposals documented with diagrams, including APIs, services, and interactions.
Break down solutions into agile progressive upgrades.
Implement builds and associated testing and maintenance tools.
Develop back-end services and APIs.
Write tests in collaboration with business colleagues; contribute to production validation.
Create documentation and user manuals; provide user assistance and support.
Monitor systems and provide L2 support, incident resolution, troubleshooting and root-cause analysis for recurring incidents.

YOUR SKILLS AND EXPERIENCE

Must-have

3+ years of software engineering experience.
Proficiency in .NET or Python (incl. async programming and performance-oriented design), with interest in both.
Hands-on experience with event-driven architectures and distributed systems (e.g., Kafka, Azure Event Hub, or MQTT).
Hands-on experience with Kubernetes in production (deployments, autoscaling).
Experience with stateful systems such as Redis (caching use cases).
Strong testing culture: unit tests, integration tests, production validation.
Familiarity with Agile practices.

Nice-to-have

Exposure to Azure and Infrastructure as Code (e.g., Bicep).
Familiarity with parts of the stack: AKS / Azure Functions, Azure Service Bus, PostgreSQL, GitHub Actions / CI/CD.
Experience with Scala or Rust is a plus.
Master’s degree (polytechnic engineering) is a strong plus.

Soft skills

Proactive mindset, collaborative spirit, willingness to support team delivery.
Ability to break down complex problems and propose pragmatic, scalable solutions.
Ownership, accountability, empathy and humility.
Strong communication skills (written and oral).

EXTRA INFORMATION

Location: Brussels, Belgium (relocation mandatory if living far / or ability to commute regularly)
Work model: Hybrid - 2 days onsite / 3 days remote
Start: ASAP, ideally by 02/03/2026
Contract duration: 1 year, extendable by +1 +1 years (max 3 years)
Contract type: Freelance
Languages: English (B2+), French is a plus
Daily rate range: €475–€500/day (all-in; depending on profile/experience, within the project budget cap)
Eligibility: EU Citizens, or Non-EU citizens already based in the EU with a valid work permit

Once we receive your CV, we will take the time to evaluate it carefully. Should there be a match for this or any other position at Etinars, we will be in touch.

Etinars is committed to supporting a Diverse and Inclusive Community. If you meet the minimum criteria for the job, you will be given the opportunity to demonstrate your abilities at an interview.

Direkt bewerben

Erweiterte Suche

software developer Jobs in köln

.NET/Python Software Developer | Energy Sector

FULL STACK WEB DEVELOPER*IN

Full Stack-Developer .NET (m/w/d)

Full-Stack-Developer (m/w/d)

Senior Full Stack Developer (all genders)

Windows Driver Developer (m/w/d)

IT Application Developer (m/w/d)

Frontend Developer (m/w/d)

Senior Software Developer & Consultant (m/w/d)

Tax-Tech Developer (m/w/d)

QA Engineer (m/f/x)

Platform Engineer mit Fokus auf Developer Experience (m/w/d)

Senior Software Architect / Lead Developer (m/w/d)

Senior Software Development Engineer - Pagero

Java Developer (m/w/d)

iOS App Developer (m/w/d)

Developer Android (Mensch)

Frontend Developer (m/w/d)

Backend Developer C# / .NET / Java (w/m/d)

Developer Flutter (Mensch)

Ich möchte aktuelle Job-E-Mails für Stellen als software developer in köln erhalten

Related Searches

Weitere Job-Standorte erkunden

WHO WE ARE

WHAT WE ARE LOOKING FOR

.NET/Python Software Developer | Energy Sector

YOUR TASKS

YOUR SKILLS AND EXPERIENCE

Must-have

Nice-to-have

Soft skills

EXTRA INFORMATION

Tools für Jobsuchende

Arbeitgebertools

Durchsuchen

Bleiben Sie in Kontakt