Ciklum is looking for a Lead Full Stack 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 Lead Full Stack Engineer become a part of a cross-functional development team engineering experiences of tomorrow.
This Israeli cybersecurity startup, founded in 2024, develops an AI-powered no-code platform that enables security teams to quickly build and customize their own security tools without relying on heavy engineering resources. Its mission is to democratize cybersecurity by simplifying how organizations create, deploy, and manage security applications—allowing users to generate solutions in minutes using AI, ready-made templates, or custom prompts instead of depending on costly, siloed traditional tools.
We are looking for a hands-on Lead Full-Stack Engineer to join a fast-growing, well-funded cybersecurity startup on a mission to redefine modern security. This role combines deep technical ownership with leadership responsibility — you will help shape the product, influence architectural decisions, and set a high engineering standard from day one.
You’ll work closely with founders and an international team in a startup environment that values proactivity, independence, and accountability. We are seeking someone who is comfortable taking ownership end-to-end, communicates fluently in English, and thrives in a high-bar, performance-driven culture. This is a key role for someone who wants to make a real impact while helping build and lead a strong engineering team as the company scales.
Requirements: * Lead the design and development of our web-based cybersecurity platform, ensuring it is secure, scalable, and high-performance * Own delivery end-to-end — from technical concept and architecture to production readiness and long-term maintainability * Provide technical leadership to the team: set engineering standards, guide architectural decisions, and lead by example * Collaborate cross-functionally with product managers, UX/UI designers, and engineers to translate ambitious product ideas into robust technical solutions * Mentor engineers, conduct high-quality code reviews, and foster a culture of ownership, proactivity, and engineering excellence * Design and implement frontend and backend systems using React, TypeScript, Node.js, and Python, with a strong focus on usability and performance * Architect secure APIs and backend services, embedding security best practices at every layer * Drive quality and reliability through testing strategies, performance optimization, and proactive issue resolution * Contribute to team growth, supporting technical interviews and helping maintain a high hiring bar
Requirements: * 8+ years of experience in full-stack development, delivering secure, scalable, user-focused applications * Proven technical leadership experience — either as a Team Lead or as a senior engineer owning architecture and mentoring others * Strong startup mindset: proactive, independent, and comfortable taking ownership in a fast-moving environment * AI-assisted development tools (GitHub Copilot, Cursor, or similar) — hands-on experience required * Frontend expertise: React expert, delivering responsive, seamless UIs * Backend expertise: Strong in TypeScript, Node.js, Python * Databases: Postgres, MongoDB, SQL/NoSQL databases, and ORM frameworks * Cloud & DevOps: AWS (preferred), Azure or GCP; Docker and Kubernetes experience * Excellent communication skills in English, able to work effectively with international stakeholders * Leadership: mentor and lead by example in technical best practices
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 & 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’ve spent over 20 years delivering meaningful tech solutions. We proudly support diverse talent and military veterans, recognizing their 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. Can’t wait to see you at Ciklum.
