Why this role is exciting

As a Senior Software Engineer, Connectivity at Vay, you’ll help build and optimize the networking backbone that makes remote driving possible. Our Connectivity team owns the low-latency real-time video streaming and data transport systems that connect our vehicles with our telestations across cellular and satellite networks. This is a hands-on engineering role where performance, reliability, and safety matter every day, and where your work will directly shape the quality of the remote driving experience.

You’ll work on a latency-sensitive distributed system, test your solutions on state-of-the-art hardware, and use real production data to investigate incidents, improve performance, and keep pushing our network stack forward.

What you'll be driving

• Develop, optimize, and maintain high-performance network stack used to transport data (video, audio, control, telemetry) between the vehicle and the telestation with a strong emphasis on clarity, maintainability, and efficiency.
• Integrate the Vay network stack into various target hardware and software platforms.
• Extend and maintain network testbeds and CI infrastructure.
• Profile and optimize the performance of the system.
• Triage incidents from the production system and create fixes/improvements.

What are we looking for

• Strong proficiency in modern C++ (C++17 or later), with a focus on high-performance, multi-threaded applications.
• Experience working in Linux-based environments.
• Solid understanding of networking fundamentals and protocols (TCP, UDP).
• Ability to analyze and optimize systems.
• Strong problem-solving skills and a research-oriented mindset.
• Experience working on distributed systems.
• Good interpersonal and communication (oral and written) skills

Nice to have:

• Understanding of networking and wireless technologies, including LTE/5G, WiFi, Starlink, and experience with tools like Wireshark for traffic analysis.
• Hands-on experience with streaming protocols, such as RTP/RTCP/RTMP/SRT, and media frameworks, such as GStreamer, FFmpeg, or DirectShow.
• Familiarity with congestion control algorithms and network simulation environments.
• Experience with building and deployment (e.g. CMake, Docker, Yocto), and scripting languages such as Python or Lua.
• Experience in real-time or embedded systems development, with knowledge of modem configuration via AT commands.
• Background in performance analysis and debugging, using tools like perf, perfetto; and graphical UIs like ImGui.

Why choose Vay

💪 A global team of smart, motivated people from 30+ countries who love tackling hard problems and turning bold ideas into reality

🌍 Huge scope for impact in a fast paced environment

💰 ESOP stock options: A stake in Vay’s future - not just a salary

🌴 Unlimited Paid Vacation Days

🎫 Subsidised Deutschland ticket (Berlin)

🏋️‍♂️ Subsidised Urban Sports Club or FitX Membership 

🚗 All Vay team members receive 30% off their Vay rides

🛍️ Exclusive external discounts

💼 €350 Home Office Set-up 

✈️ Relocation financial assistance when relocating to Berlin 

📚 Fully funded German Lessons 

🎊 Regular team events throughout the year

Werde Teil unseres hochmotivierten Expertenteams im Kampf gegen Cyberangriffe. Als Site Reliability Engineer (SRE) entwickelst und betreibst du in enger Zusammenarbeit mit System- und Network Reliability Engineers unsere zentralen Defense-Plattformen, die unsere Hosting-Produkte und die gesamte Infrastruktur schützen. Der Fokus liegt dabei auf der hochverfügbaren DDoS-Verteidigung, ergänzt durch Themen wie moderne Web Application Firewalls (WAF), Zero Trust Strategien und unser Content Delivery Network (CDN). 

Wir legen Wert auf kreative Ideen, agile Methoden und Eigeninitiative. Es erwarten dich folgende spannende Aufgaben:

Aufgabenbereich

• Entwicklung und Feinabstimmung der Logik zur schnellen und effektiven Abwehr von DDoS-Angriffen auf Netzwerk- und Applikationsebene.
• Kontinuierliche Optimierung der Erkennungs- und Mitigation-Pipelines zur automatischen Verarbeitung von Angriffsmustern, inklusive Reporting.
• Automatisierung operativer Prozesse und Infrastruktur Rollouts in Zusammenarbeit mit System Administratoren
• Bereitstellung robuster Schnittstellen und Services zur nahtlosen Integration der Defense-Produkte in die Hosting-Produkte.
• Administration und Entstörung unserer hoch verfügbaren, komplexen Infrastrukturen, einschließlich Teilnahme an der Rufbereitschaft.

Qualifikationen

Du verfügst über ein abgeschlossenes Studium der Informatik oder eine vergleichbare Berufsausbildung. Dein ausgeprägtes Interesse an Security-Themen, insbesondere DDoS-Abwehr, und tiefgreifende Netzwerkkenntnisse zeichnen dich aus.

Idealerweise bringst du folgende Qualifikationen und Erfahrungen mit:

• Mehrjährige Erfahrung in der systemnahen Entwicklung von hochverfügbaren Software-Artefakten in mindestens einer der folgenden Sprachen: Go, C, Python, PHP, Bash.
• Expertise im Umgang mit Nginx, idealerweise in Verbindung mit Lua zur Erweiterung der Applikationslogik, sowie praktisches Wissen im Betrieb von Nginx als Reverse Proxy oder Web Application Firewall (WAF).
• Infrastruktur als Code (IaC) und Automatisierung ist für dich ein Kernbestandteil eigener Arbeitsweisen.
• Fundierte Kenntnisse im Bereich Netzwerkprotokolle auf Linux-Systemen und Erfahrung mit BGP, Flowspec sowie Anycast Routing im Kontext der DDoS-Mitigation.
• Ausgezeichnete Analysefähigkeiten zur schnellen Bewertung von DDoS-Angriffen, zur Implementierung von Gegenmaßnahmen und zur kontinuierlichen Weiterentwicklung der Defense-Plattformen.
• Fließende Englischkenntnisse in Wort und Schrift in unserem internationalen Team. Deutsch ist ein Pluspunkt.

Benefits

• Hybrides Arbeitsmodell.
• Flexible Arbeitszeiten durch Vertrauensarbeitszeit.
• An einigen Standorten eine bezuschusste Kantine und verschiedene kostenfreie Getränke.
• Moderne Büroflächen mit sehr guter Verkehrsanbindung.
• Diverse Mitarbeiterrabatte für Aktivitäten und Produkte.
• Mitarbeiterevents wie Sommer- und Winterfeiern, sowie Workshops.
• Zahlreiche Weiterbildungs- und Entwicklungsmöglichkeiten.
• Verschiedene Gesundheitsangebote, wie Sport- und Gesundheitskurse.

Join our highly motivated team of experts dedicated to combating cyber security threats. As a Site Reliability Engineer, you will work closely with system administrators and network engineers to develop and operate our cutting-edge defense platforms. These platforms are crucial for protecting our hosting products and infrastructure, encompassing classic DDoS Mitigation, modern Web Application Firewalls (WAF), Zero Trust strategies, and our Content Delivery Network (CDN).

We foster a culture that highly values creative ideas, agile working methods, initiative, and participation.

Tasks

• Design, develop, and fine-tune our defense logic to effectively mitigate complex DDoS attacks across the network and application layers.
• Optimize and enhance current pipelines for automated threat detection, mitigation, and comprehensive reporting.
• Collaborate with system administrators to drive the automation of operational tasks and infrastructure provisioning.
• Develop and maintain robust APIs/interfaces to facilitate seamless integration of our defense capabilities into hosting products.
• Manage and troubleshoot our high-availability and complex defense infrastructure, including active participation in a rotating on-call service schedule.

Qualifications

You have a degree in Computer Science or a comparable educational background. You possess a strong interest in security topics, excellent networking knowledge, and meet the following qualifications:

• Several years of experience in system-near development of highly available, scalable software artifacts using languages such as Go, C, Python, PHP, or Bash.
• Experience in writing application logic with Lua scripting, particularly in combination with NGINX.
• Practical hands-on experience operating and configuring NGINX as a reverse proxy, load balancer, or Web Application Firewall (WAF).
• A deep commitment to Infrastructure as Code (IaC) and automation as core tenets of your engineering methodology.
• Familiarity with advanced networking concepts, including BGP, flowspec, anycast routing, and a solid understanding of network protocols within Linux systems.
• Excellent analytical skills for evaluating complex DDoS attacks, designing effective countermeasures, and continuously evolving our defense platforms.
• The ability to communicate fluently in English with an international team is required; German language is a bonus.

We are looking for someone in Berlin or Karlsruhe!

Benefits

• Hybrid working model.
• Flexible working hours through trust-based working hours.
• At some locations a subsidized canteen and various free drinks.
• Modern office space with very good transport connections.
• Various employee discounts for activities and products.
• Employee events such as summer and winter parties, as well as workshops.
• Numerous training and development opportunities.
• Various health offers, such as sports and health courses.