Senior Security Engineer at Kiefer Tech | Athens

Join Kiefer Tech, the innovative technology division of Kiefer, as we harness over a decade of engineering excellence from the Green Energy sector to craft advanced AI, robotics, and enterprise solutions throughout Greece and the EU. Our commitment to developing sovereign AI infrastructure ensures data remains within EU borders, prioritizing privacy while generating substantial business value. With a focus on our core values of innovation, quality, and fostering enduring client relationships, we are proud to create enterprise-level AI infrastructures, the first Greek Large Language Models, and intelligent automation solutions that empower organizations to succeed.We are seeking a dedicated Senior DevOps Engineer to join our team as the first infrastructure hire for the Sophea platform. In this role, you will play a pivotal part in standardizing deployment pipelines, establishing comprehensive observability, and expanding infrastructure-as-code practices across our services. Your mission is to enhance the consistency, reliability, and scalability of our enterprise production environment.Our Technology Stack: Our environment features over 10 Python (FastAPI) and TypeScript microservices deployed on AWS (EKS, App Runner, ECR), complemented by PostgreSQL, Redis, OpenSearch, Kafka, and S3.

Join Kiefer Tech, a pioneering technology company that leverages over 12 years of engineering expertise in the Green Energy sector to drive innovation in AI, robotics, and enterprise solutions across Greece and the EU. We are dedicated to creating sovereign AI infrastructures that prioritize data privacy and deliver significant business outcomes. Our commitment to innovation, quality, and enduring partnerships empowers us to develop industry-leading AI infrastructure, including Greece's first Large Language Models and intelligent automation solutions.As an IT Manager, you will play a vital role in our rapidly expanding AI product environment. This is not merely a support role; you will be a builder, establishing and managing internal IT frameworks that enhance productivity and scalability. Your focus will be on creating automated systems that facilitate company growth and ensuring seamless integration with our product ecosystem.

Join Kiefer Tech, the innovative technology wing of Kiefer, where we harness over 12 years of engineering expertise in the Green Energy sector to craft state-of-the-art AI, robotics, and enterprise solutions across Greece and the EU. Our commitment to building sovereign AI infrastructure ensures that data remains within EU borders, adhering to privacy standards while delivering substantial business outcomes. Driven by our core values of innovation, quality, and fostering long-term client relationships, we are pioneers in creating enterprise-grade AI infrastructure, including the first true Greek Large Language Models and intelligent automation solutions that empower organizations to excel. Through our strategic partnership with NVIDIA, we merge sustainable infrastructure know-how with leading-edge AI technology, cultivating an ecosystem that encourages innovation, bolsters Greece's technological sovereignty, and drives significant impact across various industries. Become a part of our mission to shape the AI-driven world of tomorrow.About the Role:We are on the lookout for a Senior Product Designer to enhance our design processes across multiple product streams and scale design output within our AI product ecosystem.Your Responsibilities:Craft exceptional UX/UI designs for our AI-powered product offeringsCollaborate closely with Product Managers and Engineering teams to ensure timely feature deliveryProduce clear, implementation-ready design assetsEnhance usability and consistency across our product suiteContribute to the development of design patterns and reusable componentsFacilitate quicker product iteration cyclesYour Qualifications:Minimum of 4 years of experience in Product Design / UX/UIStrong UX design thinking coupled with structured problem-solving skillsProficient in Figma or similar design toolsAbility to manage multiple priorities effectivelyExperience in collaborating with engineering teamsPractical mindset focused on delivery

Kiefer Tech is the technology division of Kiefer, drawing on over 12 years of engineering experience in the Green Energy field. The team designs and delivers AI, robotics, and enterprise solutions for clients throughout Greece and the European Union. Project work includes building sovereign AI infrastructure with a focus on data privacy, deploying enterprise automation, and developing Greece’s first production-ready Large Language Models. Kiefer Tech emphasizes technical quality, innovation, and long-term relationships with clients. The company has a strategic partnership with NVIDIA, which brings together sustainable infrastructure and advanced AI systems. This collaboration aims to support Greece’s technological independence and deliver real-world benefits across multiple industries.

Join our dynamic team at Kiefer Tech, the technological arm of Kiefer, renowned for over 12 years of pioneering work in the Green Energy sector. We are at the forefront of developing innovative AI, robotics, and enterprise solutions across Greece and the EU. Our commitment to crafting sovereign AI infrastructure ensures that data remains within EU borders, prioritizing privacy while delivering measurable business outcomes. Guided by our core principles of innovation, quality, and long-term partnerships, we create enterprise-grade AI frameworks, including Greece’s first authentic Large Language Models and intelligent automation solutions that empower organizations to succeed. Our strategic alliance with NVIDIA enhances our sustainable infrastructure expertise with world-class AI technology, fostering an ecosystem of innovation that bolsters Greece’s technological sovereignty and generates significant impact across various industries. Become a part of our mission to build the AI-powered world of tomorrow.We are on the lookout for a Senior QA Engineer to help establish robust testing methodologies and ensure product reliability in preparation for our enterprise launch.

Join Kiefer Tech, a pioneering technology firm in the Green Energy sector with over 12 years of engineering excellence. We specialize in developing advanced AI, robotics, and enterprise solutions, ensuring data sovereignty within the EU. Our commitment to privacy and impactful business results drives our mission to create cutting-edge AI infrastructure, including the first true Greek Large Language Models and intelligent automation solutions. Collaborating with NVIDIA, we aim to enhance Greece’s technological sovereignty and innovation landscape. Be part of our journey to shape the AI-powered future.Your Role:As a Senior Machine Learning Engineer, you will be instrumental in designing, optimizing, and scaling our AI systems that power the Sophea and Kiefer multi-product platform. This position requires a blend of hands-on ML engineering expertise and collaborative systems thinking. You will focus on production-grade ASR pipelines, enhancing Greek-language LLM performance, and developing cost-effective inference solutions while establishing technical benchmarks and elevating our ML practices organization-wide.Your contributions will significantly enhance product performance, customer satisfaction, and our capacity to deploy AI solutions across various public and enterprise sectors in Greece and beyond.Key Responsibilities:Develop and scale production-grade ASR and LLM pipelines, optimizing throughput, latency, and reliability while ensuring compliance with data sovereignty requirements.Enhance model performance through dataset-centric optimizations, broadening Greek-language capabilities and domain-specific expertise.Architect and implement scalable multi-agent AI systems to automate complex enterprise document analyses and decision-making processes.Lead cost and performance optimization efforts for model inference, utilizing techniques like quantization, caching, and intelligent routing to lower costs.Establish and maintain ML engineering standards, including evaluation frameworks, CI/CD practices, testing protocols, and mentorship initiatives within the ML team.

Join Kiefer Tech as a People Operations Manager in Athens, where you will play a pivotal role in shaping our team culture and enhancing our people operations. This dynamic position merges hands-on responsibilities with strategic process ownership, collaborating closely with leadership to streamline contracts, onboarding, payroll coordination, and employee experiences.In this foundational role, you will take charge of structuring and executing people operations locally. While payroll, accounting, and legal compliance are managed with external partners, your focus will be on fostering effective communication, operational excellence, and a positive employee experience.Your Responsibilities:Design and implement core people processes, ensuring their effective adoption through proactive communication and structured execution.Manage employment contracts and HR documentation in accordance with Greek labor legislation.Coordinate payroll processes with external accountants and payroll providers.Lead employee onboarding and offboarding processes, guaranteeing a seamless experience.Support performance tracking and people processes, including goal setting and feedback cycles.Organize internal team events and initiatives to enhance team engagement.Maintain HR records, ensuring compliance with local labor regulations.

We are seeking a highly skilled Senior DevOps Engineer to join our dynamic team at Netcompany1. In this pivotal role, you will be responsible for implementing and maintaining scalable and efficient infrastructure solutions that support our development and operational processes. You will collaborate closely with software engineers and IT teams to automate processes and improve system reliability.Your expertise in cloud services, containerization, and CI/CD pipelines will be key in driving our projects forward and enhancing our DevOps practices. If you are passionate about technology and thrive in a fast-paced environment, we would love to hear from you!

Join our dynamic team at Netcompany1 as an Azure DevOps Engineer where you will play a critical role in enhancing our cloud infrastructure and delivery processes. We are seeking a skilled professional who is passionate about automation and continuous integration/continuous deployment (CI/CD) practices. You will collaborate with cross-functional teams to design, implement, and manage scalable solutions on the Azure platform.

Role Overview FINARTIX is looking for a Mid-Level DevOps Engineer to join the team in Athens, Attica, Greece. This position sits within the Software Engineering Practice and focuses on projects for clients in the banking sector. The role involves hands-on work with modern technologies and offers opportunities to contribute to the design, implementation, and deployment of new solutions. What You Will Do Build and maintain reliable CI/CD pipelines for multiple project teams Manage version releases and coordinate distribution to the right channels Support and improve build and test infrastructure Work closely with stakeholders to deliver high-quality products and modules Apply DevOps best practices to drive continuous improvement across workflows About FINARTIX FINARTIX delivers technology solutions for the banking sector and values a collaborative approach to software engineering. The team is committed to continuous learning and integrating new DevOps practices to improve outcomes for clients and colleagues alike.

About UsEstablished in 2015 in Athens, Greece, Welcome is revolutionizing the travel industry by transcending traditional transfer services and pioneering a comprehensive, personalized in-destination travel experience. From the moment travelers arrive at their destination until their journey home, Welcome caters to all travel needs, including transfers, sightseeing excursions, and local insights, all delivered in the most accessible, friendly, and tailored manner. Our drivers are local experts who share their knowledge to ensure travelers feel at home wherever they go. We also prioritize safety with contactless rides, rigorous cleaning protocols, and protective gear.As a forward-thinking travel tech startup, Welcome is rapidly expanding and establishing itself as a global leader in in-destination travel services.We are among the highest-rated global transportation companies, boasting a rating of 4.9/5 stars.We have expanded from 200 destinations last year to 350, meeting our ambitious growth target for 2024.We collaborate with over 4,000 travel partners, including 2,500 hotels, numerous vacation rentals, and travel agents, adding 50+ new partners each month.Every year, we delight over 2.5 million travelers.⭐ To explore more about Welcome's vibrant culture, check out our TikTok account by clicking here! ⭐The TeamWe are a dynamic and diverse team passionate about travel and committed to excellence. Each member shares a strong belief in Welcome's mission, working tirelessly to realize it. We challenge conventional wisdom, prioritize design, emphasize simplicity and usability, and strive to create unforgettable experiences. Our commitment to continuous learning enables us to discover better ways to serve our community while fostering personal and professional growth. We maintain a humble attitude and a “pay it forward” mentality, all while pursuing ambitious goals.As a Senior CRM Specialist, you will play a critical role in supporting our global B2C retention and engagement initiatives. You will leverage analytical insights, journey design expertise, and CRM platform proficiency to enhance customer loyalty and drive repeat usage across our transportation network. Collaborating closely with the Head of CRM, your responsibilities will include optimizing our loyalty program, analyzing traveler behaviors, contributing to predictive and segmentation models alongside the BI and Product teams, improving incentive efficiency, and designing impactful lifecycle flows that elevate the traveler experience. This role merges data-driven thinking with creativity and a mobile-first CRM strategy to enrich our automation ecosystem and deliver insightful performance reporting.

Delian Alliance Industries is an innovative and rapidly expanding defense technology firm focused on developing essential infrastructure for high-stakes missions. We are seeking a dedicated DevOps Engineer who will play a crucial role in designing and sustaining the scalable infrastructure that supports our mission-critical systems.This position is perfect for individuals who are passionate about infrastructure as code, resilient distributed systems, and facilitating high-velocity engineering across contemporary infrastructure and cloud platforms.Key Responsibilities:Lead the design and implementation of cloud infrastructure systems to ensure high availability, observability, and scalability for autonomous robotics deployments.Design and implement scalable CI/CD pipelines for rapid and safe deployments across various environments.Define and enforce cloud-native architecture, security posture, and DevOps best practices across multiple teams.Drive cross-functional initiatives, including multi-region deployments, real-time telemetry pipelines, disaster recovery, and infrastructure security enhancements.Oversee monitoring, logging, and incident response processes as cloud services and robotics fleets scale.Collaborate with leadership to align infrastructure strategy with broader product and reliability objectives, representing the cloud platform in technical planning discussions.Qualifications:5+ years of hands-on experience in designing, building, and operating production-grade cloud infrastructure.Demonstrated experience in DevOps and/or site reliability, focusing on supporting and operating scalable production systems with an emphasis on automation and operational excellence.Deep expertise with at least one major cloud provider (AWS, GCP, or Azure), encompassing compute, storage, networking, IAM, cost management, and high-availability system design.Proficient in infrastructure-as-code tools (e.g., Terraform, Pulumi) and CI/CD systems (e.g., GitHub Actions, ArgoCD), with experience in standardizing these across teams.Proven experience in building and managing production-grade Kubernetes environments and cloud-native microservice architectures.Skilled in a systems programming language (e.g., Go, Python) with a strong focus on automation and DevSecOps practices.

Join Our Team as a DevOps Engineer!At Ocado Technology, we are revolutionizing the shopping experience through cutting-edge technologies including Artificial Intelligence, Machine Learning, Robotics, Big Data, Cloud Computing, and IoT. Our innovative software and hardware systems power Ocado.com and the renowned Ocado Smart Platform, which is being adopted by ambitious retailers worldwide, from Europe to America, Asia, and beyond.Our R&D headquarters in Athens, Greece, is home to a team of talented engineers dedicated to developing transformative material handling systems for the online grocery sector and other retail verticals. We provide forward-thinking solutions for order fulfillment and last-mile delivery that are tailored to meet the needs of retailers and supply chain-oriented industries. We empower our partners to tackle the challenges of modernizing their processes and systems, and we are proud to collaborate with some of the most innovative retailers globally.If you are passionate about the intersection of technology and human interaction, excited about the future of work, retail, and supply chains, and eager to contribute to the transformation of the European logistics landscape with Greek innovation, we want to meet you!

Are you a driven DevOps Engineer ready to tackle complex challenges and modernize web applications on a global scale? Join our dynamic team at Betsson Group! Product Development at Betsson Group Our Product Development division is truly global, comprising cross-functional teams across six tech hubs: Malta, Budapest, Stockholm, Tallinn, Kyiv, and Athens. With nearly 600 skilled professionals, our Product Development organization is led by our CTO-CPO, fostering collaboration among talented area teams. What You Will Be Doing Engaging with cutting-edge technologies to support our cloud journey. The Platform Core team manages Infrastructure as Code for vital components of our Core Platform Layer, including Kubernetes Clusters, Message Broker backends, and infrastructure tooling, providing a distributed runtime platform for our business applications, APIs, and websites. Creating self-service infrastructure platforms for developers and offering guidance and tools for managing their applications across various environments. Continuously enhancing our platforms based on business needs, analyzing, diagnosing, and resolving performance efficiency and scalability issues in collaboration with colleagues from diverse teams. We are currently seeking to enhance our Kafka Messaging Platform management, looking for a DevOps engineer with robust knowledge and experience in managing Kafka infrastructure.

Piraeus Bank serves as a major financial institution in Greece, supporting 4.5 million customers with a wide range of banking products and services. Recognized in 2025 by The Banker as the “Best Bank in Greece” and honored by Euromoney for excellence in corporate social responsibility, ESG, and digital banking, the bank emphasizes responsible practices, innovation, and digital transformation. The Technology department is looking for an IT Infrastructure & Reliability Engineer to join the Host & Servers Engineering team in Athens. This position plays a key role in maintaining the reliability and modernization of the bank’s core IT systems. Role overview This role focuses on supporting major IT initiatives that ensure the performance and availability of both on-premises and cloud infrastructure. The position combines technical leadership with hands-on engineering, requiring active involvement in troubleshooting and supporting production environments. What you will do Maintain high availability and reliability for essential infrastructure services across on-premises and cloud platforms. Automate manual operational processes to improve efficiency and reduce risk. Support migration of applications from legacy systems to modern platforms. Plan and implement upgrades for critical infrastructure, including monitoring, security, and load-balancing systems. Contribute to the deployment and management of an OpenShift container platform. Act as a senior escalation point for complex infrastructure and production issues. Work closely with application, security, and architecture teams to deliver solutions that meet banking standards and regulatory requirements.

Become a part of Intralot as a Senior Cloud Engineer!In your role as a Senior Cloud Engineer within our Enterprise IT team, you will play a pivotal role in the management of cloud and enterprise IT solutions.Key ResponsibilitiesArchitect, implement, and oversee cloud solutions utilizing Azure.Facilitate support for Microsoft 365 (M365) services as an integral part of our enterprise IT operations.Engage collaboratively with IT Infrastructure teams to seamlessly integrate cloud services into our enterprise applications.Continuously monitor and enhance the performance of cloud and IT infrastructure.Manage and optimize Jira for effective project and task management across our IT teams.

Become a Key Player as a Senior Application Support Engineer at INTRALOTYour Mission:As a Senior Application Support Engineer, you will be instrumental in ensuring our applications run smoothly and reliably. You will tackle complex production challenges, contribute to system enhancements, and guide junior engineers. Your key responsibilities include:Diagnosing and resolving production incidents at the 2nd level within established SLAs.Conducting root cause analyses (RCA) to identify and address recurring issues.Improving and optimizing our existing monitoring and alerting systems, including Nagios, Grafana, and NewRelic.Partnering with cross-functional teams (Development, DevOps, and QA) to enhance system stability.Reproducing incidents in testing environments and validating solutions prior to deployment.Managing problem tracking and resolution to facilitate continuous service improvements.Offering mentorship and technical assistance to junior team members.

Our Core Values: Trust | Respect | Team SpiritOur Key to Success: The exceptional individuals on our team, whose integrity and skills set us apart!We are on the lookout for an experienced Senior DevOps Engineer to join our innovative team. The ideal candidate will possess extensive hands-on experience with cloud technologies, automation, containerization, and application development. You will be instrumental in designing, deploying, and sustaining scalable solutions while collaborating with cross-functional teams.Position Overview:Your daily responsibilities will encompass:Designing, implementing, and maintaining CI/CD pipelines utilizing Azure DevOps / Azure Pipelines and Jenkins.Managing containerized applications with Docker or Podman.Deploying applications in RHEL Linux environments.Developing and maintaining automation scripts using Python.Configuring and sustaining JBoss / WildFly application servers.Building and managing applications based on Spring Boot and Node.js.Overseeing builds and dependencies with Maven.Working with Oracle databases and managing schema updates using Liquibase.Collaborating with development teams to ensure secure, reliable, and efficient deployments.

Join Our TeamAt Orfium, we are at the forefront of transforming music rights and royalties through innovative technology and data solutions. As a Senior Data Engineer on our CORE team (Centralized Orfium Revenue Engine), you will play a pivotal role in establishing the data foundations for our essential billing and reporting systems. Your expertise will ensure accuracy, scalability, reliability, and cost efficiency, which are crucial for timely invoicing, revenue recognition, and maintaining healthy cash flow for our global clientele.Your responsibilities will include designing, building, and optimizing modern data workflows leveraging technologies such as Airflow, dbt, Snowflake, and AWS. You will enhance data quality, observability, performance, and cost-effectiveness. Working in an Agile Scrum environment, you will collaborate with cross-functional teams including engineering, product, BI, and service delivery to enhance our platform and develop new capabilities that empower creators to receive payment whenever their music is played. As a senior engineer, you will lead by example, mentor team members, influence architectural decisions, engage in design reviews, and promote continuous improvement across our data pipelines and platform reliability.If you are seeking a position where your insights are valued, your ideas can thrive, and your efforts contribute to significant industry advancements while addressing real-world data challenges in a collaborative setting, this opportunity at Orfium is designed for you.