Senior Application Security Engineer

This position can be located in either Berlin or London. JOIN US TO MAKE A DIFFRENCE IN FINANCE Trade Republic is Europe's largest savings platform, with a presence in 17 countries and over 8 million customers who trust us with more than €100 billion in assets. We are on a mission to empower individuals to accumulate wealth through straightforward, secure, a…

At Flash-Security, we welcome enthusiastic candidates to submit proactive applications for positions in our esteemed team. As a company specializing in security solutions, we value innovation, dedication, and the drive to excel. Your unique talents and experiences can contribute to our mission of ensuring safety and security for all our clients.

n8n builds an open workflow orchestration platform focused on AI-powered automation. The platform blends code flexibility with no-code speed, helping technical teams automate processes and connect systems. Headquartered in Berlin, n8n has grown to over 220 team members across Europe and the US. The n8n community includes more than 650,000 active developers and creators. With over 145,000 GitHub stars, n8n ranks among the top 40 global projects. The company was named 4th in Sifted’s 2025 B2B SaaS Rising 100 and has raised $240 million, including a recent $180 million Series C at a $2.5 billion valuation. More than 500 integrations and a strong builder mindset drive n8n’s growth. The team welcomes exploration and encourages candidates to try n8n, regardless of technical background. To apply, candidates are asked to create their first workflow and share a screenshot. Registration is available at app.n8n.cloud/register. Role overview The Director of Application Security will shape and lead n8n’s security strategy from the Berlin office. This role supports product innovation, enterprise expansion, and secure engineering practices. Key responsibilities Define what “secure” means for n8n across the product, platform, and customer commitments Develop and maintain the security roadmap, set priorities, and guide decisions on key risks Serve as the chief security leader, ensuring visibility, direction, and accountability for security across engineering and leadership teams Establish foundational systems and build a team that integrates security into daily operations How to apply Candidates should explore n8n and submit a screenshot of their first workflow as part of the application. Details and registration are available at app.n8n.cloud/register.

At Süss Security GmbH, we welcome passionate individuals who are eager to contribute to our mission of providing top-notch security solutions. By submitting a spontaneous application, you open the door to potential career opportunities that match your unique skills and ambitions.Join our innovative team in Berlin and be part of a dynamic environment where your ideas are valued and your professional growth is supported.

About Skytec Security GmbH Skytec Security GmbH is based in Berlin and works at the forefront of the security industry. The team values innovation, dedication, and strong collaboration. Initiative Applications Skytec Security GmbH welcomes initiative applications from motivated individuals interested in building a career in security. If you want to contribute to a team that makes a real impact, consider sharing your background and interests.

Nexthink seeks a Senior Corporate Security Engineer based in Berlin to support the protection of its digital infrastructure. This position centers on reinforcing systems to address emerging threats and vulnerabilities. Role overview The Senior Corporate Security Engineer will collaborate with teams throughout the company to implement effective security measures. The goal is to enhance Nexthink's overall security posture and ensure that best practices are consistently applied. Key responsibilities Work with multiple teams to establish and maintain strong security practices Identify and address new threats and vulnerabilities affecting company systems Contribute to ongoing improvements in security across the organization Location This role is based in Berlin.

ABOUT YOU GmbH is looking for a Senior Application Engineer to help shape the Discovery & Consideration phase of the customer journey. This position is based in Hamburg or Berlin. Role overview This role centers on improving how customers discover and consider products on our platform. The focus is on developing strong application solutions that support a seamless and engaging user experience. Key responsibilities Enhance user experiences during the early stages of the customer journey Develop and maintain applications that drive customer engagement Location This position is available in Hamburg or Berlin.

Why Choose NebiusNebius is at the forefront of a transformative era in cloud computing, dedicated to empowering the global AI economy. We develop innovative tools and resources that help our clients tackle real-world challenges and reshape industries without incurring hefty infrastructure costs or needing extensive in-house AI/ML teams. Join our talented team and work alongside some of the most experienced professionals in AI cloud infrastructure.Our Work EnvironmentBased in Amsterdam and publicly traded on Nasdaq, Nebius boasts a global presence with R&D hubs across Europe, North America, and Israel. Our diverse team of over 1,400 includes more than 400 highly skilled engineers with profound expertise in both hardware and software engineering, complemented by a dedicated in-house AI R&D team.The PositionWe are currently in search of a Senior Security Solutions Engineer who possesses a robust background in strategic solution evaluation, vendor assessment, and practical Proof-of-Concept (PoC) validation. This pivotal role will serve as a critical link between identifying customer security requirements and executing the implementation of top-tier, enterprise-grade solutions. You will be responsible for defining the criteria, conducting market research, and performing technical validation for all significant security tools and services adopted by our clients.

We are seeking an experienced and dynamic Team Lead to oversee our Application Security Team at moia. In this pivotal role, you will guide a talented group of security professionals dedicated to safeguarding our applications and ensuring the highest security standards are met. You will collaborate closely with development and product teams to integrate security practices into the software development lifecycle.As a Team Lead, you will be responsible for fostering a culture of security awareness and continuous improvement within the organization. Your leadership will empower the team to implement effective security measures, conduct threat assessments, and respond to security incidents.

Role overview N26 GmbH is hiring a Senior Full-Stack Security Automation Engineer in Berlin. This role focuses on building and automating security processes that protect the company’s mobile banking platform and technical infrastructure. What you will do Design and implement automation frameworks to support security operations Collaborate with engineering, product, and operations teams to integrate security into daily workflows Develop security solutions for both front-end and back-end systems, protecting users and internal platforms Review and refine security protocols and practices on an ongoing basis Requirements Experience working with both front-end and back-end technologies Track record of automating security processes and frameworks Understanding of secure coding principles and cloud security Ability to work effectively with cross-functional teams This position plays a key part in defending N26’s applications and users from changing security threats. Engineers who like building practical solutions and improving security at scale will find this work meaningful.

We are seeking an experienced Senior Backend Engineer to join our dynamic team at redcare-pharmacy. In this role, you will be responsible for designing and implementing robust backend systems for our mobile applications. The ideal candidate will have a strong background in backend development and a passion for creating efficient, scalable solutions.

Join Affinidi as the Manager of Security Engineering and play a pivotal role in safeguarding our innovative technology solutions. As a leader in this domain, you will oversee a talented team of security engineers, driving the development and implementation of security strategies and frameworks that protect our systems and data.In this position, you will collaborate across departments to identify vulnerabilities, enhance security protocols, and ensure compliance with industry standards. Your expertise will be crucial in adapting to the ever-evolving security landscape, allowing us to maintain our commitment to quality and trust.

Role overview Superhuman Platform Inc. is hiring a Security Engineer to strengthen the protection of its systems and data. This position is located at the Berlin hub and focuses on defending against emerging security threats. What you will do Collaborate with teams throughout the company to design and maintain security protocols Monitor existing safeguards and identify ways to improve the safety of digital assets Address security risks as they are discovered

Join our dynamic team at dev2 as a Cloud Security Engineer. In this role, you will be responsible for safeguarding our cloud infrastructure and ensuring the highest standards of security are maintained. You will collaborate with cross-functional teams to design and implement robust security measures, conduct risk assessments, and respond to security incidents.We are looking for someone with a passion for cybersecurity and a proactive approach to problem-solving. If you thrive in a fast-paced environment and are eager to make a significant impact, we want to hear from you!

Join our dynamic team as a Senior IT Application Manager at Axel Springer SE, where you will lead the strategic management of our IT applications. Your expertise will drive innovation and efficiency across our platforms, ensuring seamless integration and user experience. Collaborate with cross-functional teams to define application requirements, enhance functionality, and optimize performance.

Role overview airapps is hiring a Security Engineer to strengthen system protection and support data integrity throughout the company. This full-time role is located in the Berlin Metropolitan Area. Key responsibilities Find and assess vulnerabilities within infrastructure and application layers Apply security controls and measures to lower risk Create and refine strategies to guard against cyber threats Support compliance efforts with industry standards Collaboration Security Engineers at airapps partner with both technical and operational teams. The group works together to sustain a secure environment and address new risks as they arise.

About Enpal Enpal aims to build Europe’s largest renewable energy community by making solar energy accessible. Through a rental model for solar systems, electricity storage, and wall boxes, Enpal offers a bundled, all-inclusive solution. The company’s approach is digital, decentralized, and fully renewable, supporting rapid growth and direct action against climate change. Role Overview: Senior/Staff Software Security Engineer (F/M/X) This position is based in Berlin. The Senior/Staff Software Security Engineer will help protect Enpal’s applications throughout the Software Development Lifecycle (SDLC). Working closely with development, product, and DevOps teams, this role embeds security into every stage of software creation. Responsibilities include leading secure code reviews, running threat modeling sessions, and ensuring best security practices are followed. What You Will Do Build Secure Solutions: Deliver value in each development cycle, improving both customer experience and climate impact. Implement Shift-Left and Zero-Trust: Apply proactive security measures early and often, protecting applications, assets, and services from emerging threats. Develop Application Security Program: Collaborate with engineering and product teams to weave security into every phase of the SDLC, including design, development, testing, and deployment. Lead Threat Modeling and Risk Assessments: Organize threat modeling sessions, promote secure design, and carry out application-level risk assessments. Provide Security Training and Mentorship: Guide and train developers on secure coding practices, serving as a hands-on advisor. Why Join Enpal? Enpal offers a collaborative workplace focused on speed, agility, and growth. The company’s mission to make sustainable solar energy widely available depends on strong teamwork across software, product, and agile business units. This is a chance to advance your career while contributing to a sustainable future.

This position is available in Berlin or London. UNLOCK YOUR POTENTIALTrade Republic is Europe's premier savings platform, operating across 17 countries and entrusted with over €100 billion in assets by more than 8 million customers. We are on a relentless pursuit to innovate and expand.Our mission is bold: we aim to empower individuals to build wealth through seamless, secure, and no-cost access to financial systems. Join us and elevate your career by collaborating with exceptional talents and cutting-edge technology to create a positive legacy for millions. ROLE RESPONSIBILITIESAs a Senior Security Engineer within our Cloud Security team, you will design and maintain secure cloud infrastructures that safeguard Trade Republic's essential systems and customer data. Your key responsibilities will include:Creating and enforcing security controls for cloud infrastructure across AWS environments;Establishing and upholding Infrastructure as Code (IaC) security standards along with automated compliance validation;Developing cloud security automation utilizing Terraform, CloudFormation, and Python to enforce security policies;Implementing and refining Cloud Security Posture Management (CSPM) solutions and remediation workflows;Architecting secure network segmentation, VPCs, security groups, and zero-trust network access frameworks;Managing identity and access management (IAM) policies, service control policies, and least privilege frameworks;Monitoring and responding to cloud security incidents using CloudTrail, GuardDuty, Security Hub, and SIEM integration;Conducting security assessments of Kubernetes clusters, container registries, and serverless architectures;Collaborating with platform and infrastructure teams to enhance cloud security and address vulnerabilities;Championing cloud security initiatives, including encryption strategies, secrets management, and data protection measures;Evaluating and integrating cloud-native security tools for runtime protection and threat detection.QUALIFICATIONSRequired Experience:5+ years as a Security Engineer with at least 4 years focused on cloud security;Expertise in AWS, Terraform, and Python;Strong understanding of cloud security frameworks and best practices;Proficient in security automation and compliance tools.

About Speechify Speechify builds text-to-speech tools that help over 50 million people turn reading materials, PDFs, books, Google Docs, articles, and websites, into audio. Users read faster, retain more, and access content in ways that work for them. Our products span iOS, Android, Mac, Chrome Extension, and Web App. Google named us Chrome Extension of the Year, and Apple recognized us with the 2025 Design Award for Inclusivity. Nearly 200 colleagues work remotely from around the world, drawing on experience from Amazon, Microsoft, Google, Stanford, Stripe, Vercel, and more. Role Overview: Senior Software Engineer, Windows/Desktop Applications This role is based in Berlin, Germany. The focus: building and evolving Speechify’s native Windows desktop applications. What You Will Do Design, architect, and develop native Windows desktop apps using Windows App SDK, WinUI (or similar), C#, XAML, and sometimes C++. Define and promote best practices for Windows development, covering code structure, performance, memory management, responsive UI, and compatibility across Windows 10 and 11. Lead accessibility improvements, ensuring apps work well with accessibility APIs like Microsoft UI Automation and that UI controls are usable for people with disabilities. Collaborate with product designers, UX researchers, QA, and other teams to plan features, shape UI/UX, and set the Windows platform roadmap. Own features from concept through design, implementation, testing, release, and ongoing maintenance, aiming for high quality and consistency. Troubleshoot and resolve complex issues, bugs, performance bottlenecks, memory leaks, and compatibility problems, while recommending sound architectural solutions.

Enpal is working to build Europe's largest renewable energy community. The company offers rental services for solar systems, electricity storage, wall boxes, and smart meters, all managed through the Enpal One+ platform. With a focus on digital, decentralized, and fully renewable solutions, Enpal aims to scale quickly and address climate change head-on. Role Overview The Senior Cloud Security Engineer joins the CISO organization in Berlin (Design Office). This role focuses on translating ISO 27001, NIS2, and KRITIS requirements into practical steps, assessing systems, identifying compliance gaps, collecting evidence, and ensuring issues are resolved. The work spans Enpal's entire technology stack, including cloud infrastructure, identity management, endpoints, applications, and various platforms. This is a hands-on position. The engineer will collaborate with IT and CTO teams, review configurations, challenge architectural choices, and use AI tools to improve efficiency. The role is deeply involved in implementation, not just governance. Enpal values agility and offers opportunities for career growth. Security, engineering, and product teams work closely to support the mission of making solar energy accessible and sustainable. The Senior Cloud Security Engineer will help build the compliance framework that keeps Enpal resilient and trusted. What You Will Do Create Secure Solutions: Deliver incremental improvements with each iteration, focusing on user experience and climate goals. Apply Shift-Left and Zero-Trust principles across all units. Translate Regulations into Action: Break down ISO 27001, NIS2/BSIG, and KRITIS requirements into prioritized tasks. Develop solutions or coordinate with CTO and IT teams to implement them. Evaluate Technology Stack for Compliance: Conduct hands-on assessments of Azure, Entra ID, M365, Intune, Defender XDR, AKS, Terraform, CI/CD pipelines, Datawarehouse, and other platforms. Identify where current practices differ from regulatory standards. Build Resilience Against Threats: Strengthen Enpal's ability to mitigate and respond to security threats, keeping systems secure and reliable.