Senior Systems Engineer
Location: GR, I, Athens
Department: Engineering
Employment type: Full-time
Required experience: Mid-Senior level
Industry: Telecommunications
Function: Engineering
Company profile: Upstream’s mission is to revolutionise the way companies market to consumers through cutting edge technology. This is an opportunity to collaborate with like-minded people in an environment that embraces individual differences and diversity.We offer a challenging and stimulating environment in which employees have the opportunity to work on a vast range of complex projects at the forefront of technical innovation. We are looking for creative, enthusiastic and open-minded individuals to join our innovative team to help both drive our success and uphold our existing reputation within the marketing technology world.What we believeOur values of integrity, perseverance, innovation and respect are at the heart of our company. Our actions are underpinned by these four values, which have become central to Upstream, providing all of our employees with a clear framework from which to make their decisions.1. Integrity & TrustYou are widely trusted and seen as a direct and truthful individual. You present the unvarnished truth in an appropriate and helpful manner, keeping confidences and admitting mistakes without misrepresenting themselves for personal gain.2. PerseveranceYou pursue work and life with energy, drive and a need to finish; you seldom give up before finishing, especially in the face of resistance or setbacks.3. InnovationYou have good judgement about which creative ideas and suggestions will work and a sense about managing the creative process of others. You have the ability to facilitate effective brainstorming and project how potential ideas may play out in the marketplace.4. RespectYou invest time in peers and demonstrates value and reverence for others when due, encouraging co-workers to express opinions and ideas. You promote equality within the workplace, encouraging praise and recognition from employee to employee as well as from the superiors. Professional Development at UpstreamUpstream offers a variety of resources and a range of opportunities to inspire the best possible performance from our employees. Our vast range of departments and global activities provide a strong platform for career development and professional progression. We boast various methods of progression within the company; whether through an upward advancement within a chosen field, expansion across departments or relocation to another office, creating the opportunity to gain both valuable experience and further insight into the international workings of the business. At Upstream, employees have the opportunity to learn new skills, work across different disciplines and global departments and move into new challenges, all within the same company.
Description: As a Senior Systems Engineer you will design, implement and administer systems infrastructure, including cloud / virtualisation software, server and storage hardware, operating systems and server-side networking. Key Accountabilities We are looking for experienced and skilled individuals.  Systems infrastructure provides a valuable foundational service to our business, and you are on the front line making it bigger, faster, shinier, flexible and available.  Linux administration: Deep and comprehensive knowledge of Linux server.  Experience with RHEL, CentOS and Ubuntu server releases is required.Virtualization: Extensive knowledge of VMware virtualization technologies with hands-on experience on installing, maintaining and operating VMware systems and services. Familiar with container technologies like Docker and LXC is a plus.Automation: Experience using automation frameworks to build infrastructure. Ansible automation framework experience is a plus. Operations and observability are second nature, and you are fluent in nagios and cacti.  Networking: Comprehensive knowledge of the core Linux network stack, iptables, network namespaces, and how Neutron automates them. Comprehensive understanding of Neutron L2 and L3 capabilities. Ability to work with network engineers to triage performance and connectivity issues, and ability to understand CISCO config.  High quality python/shell development experience is highly valued.
Requirements:  Personal CharacteristicsAbility to exhibit technical lead role for projects and technologies. To act as a point of reference within the company and drive / own tasks to pursue their completion within time and technological constraints.Ability to pursue complicated technical problems and come up with robust engineering solutions.Ability to work under pressure with track record of meeting deadlines in challenging situations.Strong team player, able to provide guidelines and assistance.Solid communication skills (both oral and written) being able to explain concepts and ideas in various types of audiences.Dependable, reliable, with attention to detail.Flexible work style to get the job done without compromising quality standards.
Benefits: We offer a very competitive base salary and benefits, directly dependent on candidates’ qualifications and skills. By joining the development team, you will be exposed to an international environment in a very dynamic and progressive group. 
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