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Ciklum

Lead Full Stack Engineer

Ciklum, Poland, New York, United States

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Ciklum

is looking for a

Lead Full Stack Engineer

to join our team full-time in Poland.

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.

Responsibilities:

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

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 flexibility – full remote working possibilities

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. With delivery centers in Wrocław and Gdańsk, our 300+ professionals in Poland drive forward‑thinking solutions for global clients. Join a community where collaboration sparks innovation—and your impact reaches millions.

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

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