Role Description Ciklum is looking for a Senior Back End Engineer to join our team full-time in Poland. As a Senior Back End Engineer, become a part of a cross-functional development team engineering experiences of tomorrow. You will help design, implement, and ship the core data pipeline and processing platform within our AI-native cloud platform. Your role involves building robust, scalable, and elegant solutions to complex cybersecurity use-cases, and you will be responsible for choosing and implementing the necessary technologies and architectures. We are seeking professionals of all levels who are eager to make a substantial impact and excel in a high-growth, dynamic environment. As AI is advancing at a pace never seen before, you'll join us at a pivotal stage, where your expertise can shape the future of cybersecurity. You'll have the opportunity to work on the bleeding edge of technology and drive true innovations, all while collaborating closely with industry veterans who are dedicated to defend the market from the new wave of AI-driven attacks. Our culture is centered around respect, collaboration and proactiveness, and a shared commitment to delivering exceptional value to our customers. If you’re passionate about building something extraordinary and thrive in an environment where your contributions truly matter, we’d love to connect with you. Responsibilities - Design, implement, and maintain the core data pipelines and processing platform for our AI-native cloud platform - Build world-class, robust, scalable, and elegant solutions for complex cybersecurity use-cases - Choose and implement appropriate technologies and architectures - Ensure the scalability, reliability, and performance of cloud-based services - Work closely with other engineers to integrate with various external and internal APIs Qualifications - 7+ years of backend development experience - Strong hands-on experience with TypeScript for backend development - Practical experience with AWS cloud services, including designing and implementing scalable architectures - Familiarity with API integrations — experience working on or integrating with APIs is highly desirable - Solid understanding of cloud technologies, distributed systems, and best practices in cloud-native architecture - Excellent software development skills with a can-do, fast-shipping attitude - Bachelor's degree or equivalent in a relevant field - Strong problem-solving and communication skills Benefits - 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

• Provide hands-on technical leadership in the development team • Drive the implementation of development activities including owning technical design and project execution for the team • Collaborate with stakeholders across the business to understand their requirements • Design and develop our cloud-enabled products, working on all parts of the code stack • Mentor Software Engineers to allow for knowledge development through advice, coaching and training opportunities • Advocate and evangelize modern agile methodologies and best practices • Take a lead role in translating requirements to sprint stories and executing on them • Build quick prototypes to refine concepts, then turn them into real production-quality features • Build and maintain reliable, high-quality integrations between G-P's platform and third-party HRIS systems • Design and develop new services leveraging a serverless, event-driven microservices architecture • Own and enhance components of our public API platform

• Classify inbound messages by category, intent, urgency, and tone • Generate contextual responses using enrichment data • Implement human approval gates • Transform raw enrichment data into structured pre-call briefs • Generate: background, pain hypotheses, talking points, rapport hooks • Vector database with embeddings • Markdown-aware chunking • Async ingestion workers • Semantic search API • Process RSS feeds, social media, video platforms, and search trends • Generate reports, forecasts, and content drafts • Run autonomously on scheduled jobs • Multi-agent system (outline → audit → generate) • Binary quality gates (PASS/FAIL with citations) • Supports multiple content formats • Enrich leads with product data and market insights • AI scoring and qualification grading • Automated audit reports • Slack operations • Scheduling workflows • Email triage and follow-ups

• Lead the architecture, design, development, and support of full stack applications using Ruby on Rails on the backend and ReactJS on the frontend. • Establish, implement, and uphold engineering standards related to code quality, maintainability, linting, secure coding, and performance across applications built on the Ruby technology stack • Drive application modernization initiatives, including decomposition of legacy monolithic systems into microservices-oriented architectures where appropriate • Contribute to cloud-native solution design and operational maturity across environments hosted in Azure/AWS involving Kubernettes, CI/CD Tools like Jenkins and GitHub Actions • Build and enhance unit, integration, and automated test coverage using RSpec and other relevant tools to ensure application stability and quality • Participate in technical roadmap planning, solution reviews, and architecture decisions to ensure systems are scalable, resilient, and aligned to business goals