Ciklum is looking for a Senior Security Engineer to join our team full-time in Ukraine.

We are a custom product engineering company that supports both multinational organizations and scaling startups to solve their most complex business challenges. With a global team of over 4,000 highly skilled developers, consultants, analysts and product owners, we engineer technology that redefines industries and shapes the way people live.

About the role:

As a Senior Security Engineer, become a part of a cross-functional development team engineering experiences of tomorrow. Together, we will work on the project for a global leader in the leisure, travel and tourism sector, delivering secure and scalable technology that enables a high-quality end-to-end customer experience. The Senior Security Engineer is a practitioner and an advocate of state-of-the-art cloud engineering practices, with a strong DevSecOps mindset, able to tackle the whole software development cycle of designing, building, testing and deploying applications.

Responsibilities:

• Provide and support the content delivery and security platform at edge across multiple domains
• Take over full responsibility for the platform, from design to operation, ensuring quality of work, proper documentation, and security aspects
• Develop and run the content delivery network and associated platform as part of a team
• Enable business development teams to work more efficiently by using expertise in developing and operating technical platforms
• Help other teams adopt your platform through direct engagement
• Ensure observability of your platform and service
• Improve CI/CD and automation maturity and efficiency
• Research, evaluate and test new approaches, processes and tools and help teams to use them effectively
• Drive technical excellence, ownership, and self-organisation at team and personal level

Requirements:

• Proficient experience in working with CDN and WAF solutions like Akamai, AWS or Cloudflare. Bot detection, DDoS protection, cache optimisation
• Deep knowledge and hands-on experience on Web technologies - RFC’s, request/response lifecycle, DNS, protocols, status codes, cookies, headers, proxies, certificates, browsers, caching, etc.
• Experience in front-end development is a huge plus
• Advanced experience in designing secure, highly available, distributed applications in an Amazon Web Services (AWS) environment. EKS, Lamdba functions, Lambda@Edge, CloudFront, S3, API Gateways knowledge is preferable
• Ability to understand and analyse complex security events as well as adjust the resulting ongoing security profiles
• Monitoring experience - Datadog, Grafana. Trend analysis, deep investigation, issue tracking
• Experience in defining, planning, implementing, maintaining, and upgrading security measures, guardrails and controls for WAF and CDN
• Familiar with information security standards & practices and their practical implications
• Experienced in securing APIs, REST API and GraphQL API using AWS AppSync
• Deep automation skills, hands-on experience with agentic LLMs, experience with some scripting and programming languages such as Python
• Advanced experience with CI/CD, preferably Gitlab CI
• Experience with Infrastructure as a Code tools. Preferably Terraform, CloudFormation, AWS CDK
• Being customer centric, passionate about delivering great digital products and services
• Passionate about continuous improvement, collaboration and great teams
• Strong problem-solving skills coupled with good communication skills
• Understanding of social and ethical implications of software engineering
• Open minded, inquisitive, life-long learner
• Comfortable with ambiguity, highly autonomous

What’s in it for you?

• Strong community: Work alongside top professionals in a friendly, open-door environment
• Growth focus: Take on large-scale projects with a global impact and expand your expertise
• Tailored learning: Boost your skills with internal events (meetups, conferences, workshops), Udemy access, language courses and company-paid certifications
• Endless opportunities: Explore diverse domains through internal mobility, finding the best fit to gain hands-on experience with cutting-edge technologies
• Flexibility: Enjoy radical flexibility – work remotely or from an office, your choice
• Care: We’ve got you covered with company-paid medical insurance, mental health support and financial and legal consultations

About us:

At Ciklum, we are always exploring innovations, empowering each other to achieve more, and engineering solutions that matter. With us, you’ll work with cutting-edge technologies, contribute to impactful projects, and be part of a One Team culture that values collaboration and progress.

As one of Ukraine’s largest IT companies and a top employer recognized by Forbes, we have spent over 20 years delivering meaningful tech solutions. We proudly support diverse talent and military veterans, recognizing the unique skills and perspectives they bring to shaping the future.

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Explore, empower, engineer with Ciklum!

Interested already? We would love to get to know you. Submit your application. We can’t wait to see you at Ciklum.