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70 Treffer für Developer It Jobs in Siegburg im Umkreis von 30 km
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To support this strategic step, we are looking forward to welcoming you as Software Engineer – Full Stack to work closely with our internal and take responsibility for building, integrating and continuously improving our application landscape. * At least 2 years of professional experience as a full-stack software engineer or in a similar role - As part of our continued growth, we are focussing on the further development of our Transaction Database and expanding our IT & Technology team. * Close collaboration within the IT team, reporting to the & Team Lead
To support this strategic step, we are looking forward to welcoming you as Software Engineer – Full Stack to work closely with our internal and take responsibility for building, integrating and continuously improving our application landscape. * At least 2 years of professional experience as a full-stack software engineer or in a similar role - As part of our continued growth, we are focussing on the further development of our Transaction Database and expanding our IT & Technology team. * Close collaboration within the IT team, reporting to the & Team Lead
As a Software Engineer, you will work side-by-side with our CTO to architect and ship intuitive, high-performance applications.
As a Software Engineer, you will work side-by-side with our CTO to architect and ship intuitive, high-performance applications.
Circonomit GmbH * Köln * Feste Anstellung * Vollzeit - Introduction - At Circonomit, we follow the mission to build the strategic twin of organizations. By transforming operational data into clear impact models, we revolutionize how resources are managed. What you'll build - As a Senior Data Engineer, you will partner directly with our CTO to architect the semantic backbone of our platform, taking full ownership of the distributed pipelines and knowledge graph ontologies that bring our mission to life. Join our nerdy, fast-paced team to build the semantic structures that make our mission possible. * Architect complex data flow solutions, enabling transparent, versioned, and fully auditable computations * Design the data layer by developing metadata and data lineage fused by semantic graphs and numerical data
Circonomit GmbH * Köln * Feste Anstellung * Vollzeit - Introduction - At Circonomit, we follow the mission to build the strategic twin of organizations. By transforming operational data into clear impact models, we revolutionize how resources are managed. What you'll build - As a Senior Data Engineer, you will partner directly with our CTO to architect the semantic backbone of our platform, taking full ownership of the distributed pipelines and knowledge graph ontologies that bring our mission to life. Join our nerdy, fast-paced team to build the semantic structures that make our mission possible. * Architect complex data flow solutions, enabling transparent, versioned, and fully auditable computations * Design the data layer by developing metadata and data lineage fused by semantic graphs and numerical data
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(Senior) Cloud Engineer (f/m/d) Azure Platform
(Senior) Cloud Engineer (f/m/d) Azure Platform
Next Kraftwerke GmbH
Köln, Home-Office
Teilweise Home-Office
As a Cloud Engineer, you will be responsible for the development and maintenance of our Azure infrastructure, ensuring it remains robust and scalable to meet the demands of our growing operations. * You drive IT projects from concept and evaluation to implementation, operation, and support. * You integrate IT security and regulatory requirements (including KRITIS) into concepts and daily operations. What's in it for you?
As a Cloud Engineer, you will be responsible for the development and maintenance of our Azure infrastructure, ensuring it remains robust and scalable to meet the demands of our growing operations. * You drive IT projects from concept and evaluation to implementation, operation, and support. * You integrate IT security and regulatory requirements (including KRITIS) into concepts and daily operations. What's in it for you?
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Lead Frontend Engineer – Embedded Application (m/f/d)
Lead Frontend Engineer – Embedded Application (m/f/d)
Secunet Security Networks AG
Berlin, Bonn, Borchen, Dresden, Eschborn, Essen, Hamburg, Hannover, Ilmenau, München, Siegen
Teilweise Home-Office
Secunet Security Networks AG * Berlin, Bonn, Borchen, Dresden, Eschborn, Essen, Hamburg, Hannover, Ilmenau, München, Siegen * Feste Anstellung * Homeoffice möglich, Vollzeit - Any secunet location | Involves infrequent travel - For our group-wide development department SINA Evolution in the Public Authorities division – the driver of secure cloud transformation – we are looking for your bright mind to join one of our locations in Berlin, Bonn, Borchen, Dresden, Eschborn, Essen, Hamburg, Hanover, Ilmenau, Munich, Siegen or Stuttgart as soon as possible. We're looking for a Lead Frontend Engineer (m/f/d) to take technical ownership of the user-facing interaction layer of an embedded system operating in a security-critical environment. In this role, you act as the primary technical decision-maker for frontend architecture while remaining deeply hands-on in development.
Secunet Security Networks AG * Berlin, Bonn, Borchen, Dresden, Eschborn, Essen, Hamburg, Hannover, Ilmenau, München, Siegen * Feste Anstellung * Homeoffice möglich, Vollzeit - Any secunet location | Involves infrequent travel - For our group-wide development department SINA Evolution in the Public Authorities division – the driver of secure cloud transformation – we are looking for your bright mind to join one of our locations in Berlin, Bonn, Borchen, Dresden, Eschborn, Essen, Hamburg, Hanover, Ilmenau, Munich, Siegen or Stuttgart as soon as possible. We're looking for a Lead Frontend Engineer (m/f/d) to take technical ownership of the user-facing interaction layer of an embedded system operating in a security-critical environment. In this role, you act as the primary technical decision-maker for frontend architecture while remaining deeply hands-on in development.
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Schnelle Bewerbung
LOW Teq GmbH * Cologne, Germany * Feste Anstellung * Homeoffice möglich, Vollzeit - Schnelle Bewerbung - Introduction - Are you interested in the healthcare sector and do you enjoy driving forward the prerequisites of modern medicine, digitalisation and data use? Then become part of our team! With us you have the opportunity to use your knowledge, your personality and your competence in the right place! With more than 35 employees, LOWTeq GmbH is one of the leading manufacturers of patient data management systems (PDMS) in the German-speaking area for emergency medicine, surgical medicine and intensive care medicine with its super-specialisations - We are looking as soon as possible for our location in Cologne for - Your tasks - Who we are searching for? Together with you, we want to continuously develop our innovative PDMS solutions.
LOW Teq GmbH * Cologne, Germany * Feste Anstellung * Homeoffice möglich, Vollzeit - Schnelle Bewerbung - Introduction - Are you interested in the healthcare sector and do you enjoy driving forward the prerequisites of modern medicine, digitalisation and data use? Then become part of our team! With us you have the opportunity to use your knowledge, your personality and your competence in the right place! With more than 35 employees, LOWTeq GmbH is one of the leading manufacturers of patient data management systems (PDMS) in the German-speaking area for emergency medicine, surgical medicine and intensive care medicine with its super-specialisations - We are looking as soon as possible for our location in Cologne for - Your tasks - Who we are searching for? Together with you, we want to continuously develop our innovative PDMS solutions.
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Whatever moves the needle – even if it's not on the roadmap yet. We deliver it – turning ideas into working products. You understand why something works technically – and why it should exist at all. It's that simple. --> use the COVER LETTER for it.
Whatever moves the needle – even if it's not on the roadmap yet. We deliver it – turning ideas into working products. You understand why something works technically – and why it should exist at all. It's that simple. --> use the COVER LETTER for it.
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We believe in a future where organizations don't lose their valuable energy to paperwork but can fully invest it in their people.
We believe in a future where organizations don't lose their valuable energy to paperwork but can fully invest it in their people.
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Mentor and Guide: Help junior developers level up their skills through mentoring and collaborative projects. We value developers who enjoy rolling up their sleeves and writing great code, not just technical managers. * Impactful Work: Contribute to projects that matter, whether it's digitalizing leading companies, developing open-source tool or innovating with blockchain and AI.
Mentor and Guide: Help junior developers level up their skills through mentoring and collaborative projects. We value developers who enjoy rolling up their sleeves and writing great code, not just technical managers. * Impactful Work: Contribute to projects that matter, whether it's digitalizing leading companies, developing open-source tool or innovating with blockchain and AI.
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We are looking for a skilled Software Engineer to help us maintain and develop Windows-based applications.
We are looking for a skilled Software Engineer to help us maintain and develop Windows-based applications.
We offer mentorship, feedback and proven processes, but it's your drive and curiosity that will make the difference. * Impactful Work: Contribute to projects that matter, whether it's digitalizing leading companies, developing open-source tool or innovating with blockchain and AI.
We offer mentorship, feedback and proven processes, but it's your drive and curiosity that will make the difference. * Impactful Work: Contribute to projects that matter, whether it's digitalizing leading companies, developing open-source tool or innovating with blockchain and AI.
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PAJ UG (haftungsbeschränkt) * Windeck * Feste Anstellung * Homeoffice möglich, Vollzeit - Sei einer der ersten Bewerber - Who We Are - PAJ is a leading manufacturer, distributor, and consultant in tracking technology, based in Windeck-Hurst. We offer the perfect GPS tracker for almost any application. We are a dynamic, growing company with many creative and passionate minds, both in Germany and abroad. We thrive on open communication and exceptional personalities. If you enjoy variety and challenges, you'll feel right at home with us! * Develop & Innovate: Build forward-looking features to expand our ERP system * Improve & Extend: Optimize existing features for a seamless user experience * Automate & Optimize: Increase efficiency and improve business processes through automation * Debug & Perfect: Fix bugs, prevent issues, and ensure smooth operation
PAJ UG (haftungsbeschränkt) * Windeck * Feste Anstellung * Homeoffice möglich, Vollzeit - Sei einer der ersten Bewerber - Who We Are - PAJ is a leading manufacturer, distributor, and consultant in tracking technology, based in Windeck-Hurst. We offer the perfect GPS tracker for almost any application. We are a dynamic, growing company with many creative and passionate minds, both in Germany and abroad. We thrive on open communication and exceptional personalities. If you enjoy variety and challenges, you'll feel right at home with us! * Develop & Innovate: Build forward-looking features to expand our ERP system * Improve & Extend: Optimize existing features for a seamless user experience * Automate & Optimize: Increase efficiency and improve business processes through automation * Debug & Perfect: Fix bugs, prevent issues, and ensure smooth operation
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ThoughtWorks * Köln * Feste Anstellung * Vollzeit - Introduction - About Thoughtworks - Thoughtworks is a dynamic and inclusive community of bright and supportive colleagues who are revolutionizing tech. As a leading technology consultancy, we're pushing boundaries through our purposeful and impactful work. For 30+ years, we've delivered extraordinary impact together with our clients by helping them solve complex business problems with technology as the differentiator. Bring your brilliant expertise and commitment for continuous learning to Thoughtworks. Together, let's be extraordinary. Your tasks * Job responsibilities * Job Details - The Service Specialist for Enterprise Modernization in Europe is a senior subject matter expert responsible for technical excellence, solution integrity, and asset development within the service line.
ThoughtWorks * Köln * Feste Anstellung * Vollzeit - Introduction - About Thoughtworks - Thoughtworks is a dynamic and inclusive community of bright and supportive colleagues who are revolutionizing tech. As a leading technology consultancy, we're pushing boundaries through our purposeful and impactful work. For 30+ years, we've delivered extraordinary impact together with our clients by helping them solve complex business problems with technology as the differentiator. Bring your brilliant expertise and commitment for continuous learning to Thoughtworks. Together, let's be extraordinary. Your tasks * Job responsibilities * Job Details - The Service Specialist for Enterprise Modernization in Europe is a senior subject matter expert responsible for technical excellence, solution integrity, and asset development within the service line.
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Schnelle Bewerbung
As a Software Developer on our team, you'll play a pivotal role in developing and implementing software solutions that drive our platform forward. * 3+ years of proven experience as a Software Developer
As a Software Developer on our team, you'll play a pivotal role in developing and implementing software solutions that drive our platform forward. * 3+ years of proven experience as a Software Developer
ilert helps thousands of DevOps & IT teams detect, fix, and communicate incidents faster. * Performance & Quality: Assist in optimizing frontend performance and writing tests to ensure our UI never fails when a customer needs it most.
ilert helps thousands of DevOps & IT teams detect, fix, and communicate incidents faster. * Performance & Quality: Assist in optimizing frontend performance and writing tests to ensure our UI never fails when a customer needs it most.
iLert GmbH * Cologne * Studentenjobs, Werkstudent * Homeoffice möglich, Teilzeit - Introduction - Keep the world awake - Build the backbone of agentic incident response - ilert is the heart of the "always-on" business. Our backend systems process thousands of events per second, ensuring that when a critical system fails, the right person is notified within seconds. We are looking for a Working Student or Intern who wants to go beyond "Todo List" apps and dive into high-performance, distributed backend architecture. You will help us build the resilient APIs and data processing pipelines that power our platform across AWS, Kubernetes, and beyond. Tasks * API Development: Design and implement robust RESTful APIs using modern backend languages (we mainly use Java and Rust - we're happy to see your preference!).
iLert GmbH * Cologne * Studentenjobs, Werkstudent * Homeoffice möglich, Teilzeit - Introduction - Keep the world awake - Build the backbone of agentic incident response - ilert is the heart of the "always-on" business. Our backend systems process thousands of events per second, ensuring that when a critical system fails, the right person is notified within seconds. We are looking for a Working Student or Intern who wants to go beyond "Todo List" apps and dive into high-performance, distributed backend architecture. You will help us build the resilient APIs and data processing pipelines that power our platform across AWS, Kubernetes, and beyond. Tasks * API Development: Design and implement robust RESTful APIs using modern backend languages (we mainly use Java and Rust - we're happy to see your preference!).
If you have a GitHub repo where you've experimented with LLM agents or a project that connects AI to the real world, we definitely want to see it!
If you have a GitHub repo where you've experimented with LLM agents or a project that connects AI to the real world, we definitely want to see it!
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Working Student / Intern: DevOps / Site Reliability Engineer (f/m/x)
Working Student / Intern: DevOps / Site Reliability Engineer (f/m/x)
iLert GmbH
Cologne
Teilweise Home-Office
ilert helps thousands of DevOps & IT teams detect, fix, and communicate incidents faster. * Current Student: You are enrolled in Computer Science, IT Security, Mathematics, or a similar technical degree.
ilert helps thousands of DevOps & IT teams detect, fix, and communicate incidents faster. * Current Student: You are enrolled in Computer Science, IT Security, Mathematics, or a similar technical degree.
Mentor and Guide: Help junior developers level up their skills through mentoring and collaborative projects. We value developers who enjoy rolling up their sleeves and writing great code, not just technical managers. * Impactful Work: Contribute to projects that matter, whether it's digitalizing leading companies, developing open-source tool or innovating with blockchain and AI.
Mentor and Guide: Help junior developers level up their skills through mentoring and collaborative projects. We value developers who enjoy rolling up their sleeves and writing great code, not just technical managers. * Impactful Work: Contribute to projects that matter, whether it's digitalizing leading companies, developing open-source tool or innovating with blockchain and AI.
Schnelle Bewerbung
LOW Teq GmbH * Cologne * Feste Anstellung * Homeoffice möglich, Vollzeit - Schnelle Bewerbung - Introduction - Are you interested in the healthcare industry and experienced in working with data? Do you aspire to contribute to impactful new projects? If so, we have an exciting opportunity for you! LOWTeq GmbH is expanding its horizons. We have recently formed an AI team and started a journey to integrate AI solutions into our well-established healthcare platform. With more than 30 employees, LOWTeq GmbH is one of the leading German manufacturers of patient data management systems (PDMS) in the German-speaking region for emergency medicine, operative medicine and intensive care medicine with its super-specialization. We're seeking a DevOps Engineer to join our team, focusing on delivering reliable infrastructure and edge deployments for healthcare facilities like hospitals. Your tasks
LOW Teq GmbH * Cologne * Feste Anstellung * Homeoffice möglich, Vollzeit - Schnelle Bewerbung - Introduction - Are you interested in the healthcare industry and experienced in working with data? Do you aspire to contribute to impactful new projects? If so, we have an exciting opportunity for you! LOWTeq GmbH is expanding its horizons. We have recently formed an AI team and started a journey to integrate AI solutions into our well-established healthcare platform. With more than 30 employees, LOWTeq GmbH is one of the leading German manufacturers of patient data management systems (PDMS) in the German-speaking region for emergency medicine, operative medicine and intensive care medicine with its super-specialization. We're seeking a DevOps Engineer to join our team, focusing on delivering reliable infrastructure and edge deployments for healthcare facilities like hospitals. Your tasks
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SpotmyEnergy GmbH * Köln * Feste Anstellung * Vollzeit - Sei einer der ersten Bewerber - Introduction - About usWith the ongoing transition to weather-dependent energy sources, the need for flexibility in the energy market is skyrocketing. At SpotmyEnergy, we are at the forefront of the energy transition, pioneering smart solutions to integrate millions of small assets to provide this flexibility. We innovate asset optimization and flexibility marketing by providing an unparalleled smart metering and asset base that benefits residential customers. Your Key Responsibilities - Your MissionYou take ownership of our B2C app — the core product customers use to understand, control and optimize their energy. Your mission is to build a technically clean, stable and scalable app that customers trust every day — and that keeps pace with rapid growth, new tariffs and features.
SpotmyEnergy GmbH * Köln * Feste Anstellung * Vollzeit - Sei einer der ersten Bewerber - Introduction - About usWith the ongoing transition to weather-dependent energy sources, the need for flexibility in the energy market is skyrocketing. At SpotmyEnergy, we are at the forefront of the energy transition, pioneering smart solutions to integrate millions of small assets to provide this flexibility. We innovate asset optimization and flexibility marketing by providing an unparalleled smart metering and asset base that benefits residential customers. Your Key Responsibilities - Your MissionYou take ownership of our B2C app — the core product customers use to understand, control and optimize their energy. Your mission is to build a technically clean, stable and scalable app that customers trust every day — and that keeps pace with rapid growth, new tariffs and features.
Tell technical stories that resonate: produce blog posts, deep-dive guides, and case studies finely tuned for developers, SREs, and IT leaders. Now it's time to take this to the next level and that's where you come in. * A translator of tech: content marketing experience in B2B SaaS or developer ecosystems, with the ability to make incident response approachable for both engineers and execs. If you see yourself in this role, and you want content to do more than just sound good: you want it to matter.
Tell technical stories that resonate: produce blog posts, deep-dive guides, and case studies finely tuned for developers, SREs, and IT leaders. Now it's time to take this to the next level and that's where you come in. * A translator of tech: content marketing experience in B2B SaaS or developer ecosystems, with the ability to make incident response approachable for both engineers and execs. If you see yourself in this role, and you want content to do more than just sound good: you want it to matter.
PAJ UG (haftungsbeschränkt) * Windeck * Feste Anstellung * Homeoffice möglich, Vollzeit - Sei einer der ersten Bewerber - Who We Are - PAJ is a leading manufacturer, distributor, and consultant in tracking technology, based in Windeck-Hurst. We offer the perfect GPS tracker for almost any application. We are a dynamic, growing company with many creative and passionate minds, both in Germany and abroad. We thrive on open communication and exceptional personalities. If you enjoy variety and challenges, you'll feel right at home with us! • Backend Development (Java / Quarkus): Design, implement, and optimize backend services using Java and Quarkus (including Netty and data protocols where applicable), with a focus on performance, reliability, and clean architecture. • Frontend Development (Vue.js / Vite): Build and maintain the web frontend using Vue.js and Vite with JavaScript / ...
PAJ UG (haftungsbeschränkt) * Windeck * Feste Anstellung * Homeoffice möglich, Vollzeit - Sei einer der ersten Bewerber - Who We Are - PAJ is a leading manufacturer, distributor, and consultant in tracking technology, based in Windeck-Hurst. We offer the perfect GPS tracker for almost any application. We are a dynamic, growing company with many creative and passionate minds, both in Germany and abroad. We thrive on open communication and exceptional personalities. If you enjoy variety and challenges, you'll feel right at home with us! • Backend Development (Java / Quarkus): Design, implement, and optimize backend services using Java and Quarkus (including Netty and data protocols where applicable), with a focus on performance, reliability, and clean architecture. • Frontend Development (Vue.js / Vite): Build and maintain the web frontend using Vue.js and Vite with JavaScript / ...
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This offering helps clients modernize their software engineering organizations using a holistic, AI-first approach-combining platform engineering, developer experience, software intelligence, organizational transformation, and global delivery strategies. It sits at the intersection of consultative selling, technical solutioning, and go-to-market leadership in one of the most critical areas of enterprise modernization. * Shape AI-first solutions in platform engineering, developer experience, software intelligence, and delivery transformation. * Familiar with platform engineering, developer productivity, AI in software development, and organizational change.
This offering helps clients modernize their software engineering organizations using a holistic, AI-first approach-combining platform engineering, developer experience, software intelligence, organizational transformation, and global delivery strategies. It sits at the intersection of consultative selling, technical solutioning, and go-to-market leadership in one of the most critical areas of enterprise modernization. * Shape AI-first solutions in platform engineering, developer experience, software intelligence, and delivery transformation. * Familiar with platform engineering, developer productivity, AI in software development, and organizational change.
When Spotify stops playing, Amazon can't process orders, or a bank's app goes dark - it's an incident. Behind the scenes, a team of engineers is scrambling to fix it. ilert is the platform they rely on to detect the issue, organize the response, and resolve the panic. Our AI SRE doesn't just watch; it acts. It analyzes logs, correlates deployments, and suggests remediation, working alongside humans to restore stability. If you admire the functional elegance of Linear, the data-depth of Datadog, and the developer-centricity of Vercel, ilert is your next home. How do we visualize an AI agent's decision-making process so an SRE trusts it enough to hit "Approve"? * Scale the Design System: Evolve our design system, ensuring it maps cleanly to our frontend stack * Experienced: 3+ years in Product Design, with a portfolio demonstrating complex B2B SaaS or Developer Tool design.
When Spotify stops playing, Amazon can't process orders, or a bank's app goes dark - it's an incident. Behind the scenes, a team of engineers is scrambling to fix it. ilert is the platform they rely on to detect the issue, organize the response, and resolve the panic. Our AI SRE doesn't just watch; it acts. It analyzes logs, correlates deployments, and suggests remediation, working alongside humans to restore stability. If you admire the functional elegance of Linear, the data-depth of Datadog, and the developer-centricity of Vercel, ilert is your next home. How do we visualize an AI agent's decision-making process so an SRE trusts it enough to hit "Approve"? * Scale the Design System: Evolve our design system, ensuring it maps cleanly to our frontend stack * Experienced: 3+ years in Product Design, with a portfolio demonstrating complex B2B SaaS or Developer Tool design.