Role Description Ciklum is looking for an Expert Go Engineer to join our team full-time in Ukraine. As an Expert Go Engineer, you will be part of a cross-functional development team engineering experiences of tomorrow. You’ll be responsible for building and maintaining our Client's blockchain management platform, implementing high-throughput, real-time scalable software solutions. Your responsibilities will include: - Implement modern backend applications and infrastructure in a microservices architecture, using the latest technologies and development practices. - Deep dive into the latest blockchain technology and become an expert in the fundamentals, protocols, and features of the chains we support. - Collaborate effectively with developers, engineers, and other roles while demonstrating strong independent problem-solving abilities. - Contribute to production reliability through on-call participation, incident response, and post-incident follow-ups. Qualifications - 5+ years of backend development experience in modern languages (Go, Python, JavaScript/TypeScript). - 3+ years of hands-on blockchain development experience. - Experience working on high-scale distributed systems. - Understanding of microservices architecture and API design. - Knowledge of consensus mechanisms, cryptographic primitives, and distributed systems. - Strong problem-solving skills and attention to detail. - Strong verbal and written communication skills and a collaborative mindset. Requirements - Experience building blockchain solutions for enterprise or institutional use cases (desirable). - Understanding of security best practices for smart contracts and blockchain systems (desirable). - Demonstrated ability to apply AI tools in day-to-day development (desirable). - Understanding of MPC, multi-signature wallets, or other advanced cryptographic techniques (desirable). - Bachelor’s degree in Computer Science, Engineering, or a related field (desirable). - Experience with Docker, Kubernetes, and Helm (desirable). 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 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.

Role Description A Support Engineer is responsible for resolving customer technical issues and ensuring successful use of Precisely’s coding-focused and data integration products, including CODE-1 Plus, VeriMove, Finalist and Canadian CODE-1 Plus, and selected Data Integrity Suite (DIS SaaS). Knowledge of z/OS/JCL and the IBMi platform is beneficial. Customers rely on our technical expertise to troubleshoot complex, code-driven workflows involving data processing, validation, and integration. Strong problem-solving skills, technical depth, and clear communication are essential. - Provide world-class technical support via phone, email, case management systems, and remote desktop sessions while meeting SLA requirements and documenting work accurately. - Support customers using Code-1, VeriMove, and Finalist, including troubleshooting job logic, configuration issues, file handling, and execution errors. - Diagnose and resolve issues related to data transformation, validation, cleansing, and movement across platforms. - Support Spectrum UAM and related services, including configuration, data processing flows, and integration scenarios. - Assist customers using DIS SaaS / Data Integrity Suite services where coding, automation, or APIs are involved. - Analyze logs, job output, error messages, and customer-provided artifacts to identify root cause and recommend corrective actions. - Determine whether issues originate from product behavior, customer-developed logic, data quality problems, third-party components, or environmental configuration. - Collaborate closely with Engineering and Product Management on escalations, enhancements, and defect investigations. - Create and maintain internal and customer-facing knowledge base documentation. - Continuously develop product knowledge and share expertise with the broader support team. - Participate in on-call and after-hours support rotations as required. Qualifications - Bachelor’s degree in Computer Science, Software Engineering, or a related technical field, or equivalent experience. - 3–6+ years of experience in technical customer support or a related technical role. - Experience supporting Code-1, VeriMove, Finalist, or similar data processing and coding-centric products. - Familiarity with Spectrum UAM or Spectrum-based data integration solutions. - Experience supporting batch processing, ETL-style workflows, or data pipelines. - Exposure to SaaS platforms and API-based integrations. - Experience working in a global or follow-the-sun support model. Requirements - Leverages AI to enhance customer support operations (case summarization, response drafting, knowledge recommendations, sentiment analysis). - Comfortable evaluating and adopting emerging AI tools to improve productivity, decision-making, and cross-team visibility. - Ensures responsible AI usage aligned with data privacy, security, and enterprise governance standards. - Identifies and automates repetitive support and operational workflows using AI tools (e.g., case triage, routing, summarization, reporting) to improve efficiency and reduce manual effort. Preferred Skills - Knowledge of z/OS/JCL, and the IBMi platform is beneficial.

Role Description Ciklum is looking for a Senior Go Engineer to join our team full-time in Ukraine. As a Senior Go Engineer, become a part of a cross-functional development team engineering experiences of tomorrow. Join our team and take a position in building and maintaining our Client's blockchain management platform. You’ll be responsible for building cutting-edge blockchain infrastructure while implementing high-throughput, real-time scalable software solutions. You will be instrumental in the research and integration of blockchain technologies into the platform. Your responsibilities will include: - Implement modern backend applications and infrastructure in a microservices architecture, using the latest technologies and development practices - Deep dive into the latest blockchain technology and become an expert in the fundamentals, protocols, and features of the chains we support - Collaborate effectively with developers, engineers, and other roles while demonstrating strong independent problem-solving abilities - Contribute to production reliability through on-call participation, incident response, and post-incident follow-ups Qualifications - 5+ years of backend development experience in modern languages (Go, Python, JavaScript/TypeScript) - 3+ years of hands-on blockchain development experience - Experience working on high-scale distributed systems - Understanding of microservices architecture and API design - Knowledge of consensus mechanisms, cryptographic primitives, and distributed systems - Strong problem-solving skills and attention to detail - Strong verbal and written communication skills and a collaborative mindset Requirements - Experience building blockchain solutions for enterprise or institutional use cases - Understanding of security best practices for smart contracts and blockchain systems - Demonstrated ability to apply AI tools in day-to-day development - Understanding of MPC, multi-signature wallets, or other advanced cryptographic techniques - Bachelor’s degree in Computer Science, Engineering, or a related field - Experience with Docker, Kubernetes, and Helm 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 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 Company Description 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. 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.

Role Description Are you a motivated and experienced engineer who wants to make an impact by developing and operating scalable MTA platforms while designing systems to detect, prevent, and mitigate abuse? Your team: - Join our engineering team focused on developing and maintaining the OX Cloud MTA platform and Anti-Abuse systems. - Contribute to the implementation of architectural decisions and apply your expertise to ensure the platform’s reliability, stability, and security. - Focus on improving the platform through continuous technical enhancements, while ensuring uninterrupted mail delivery performance. Your new job: - Contribution to the development and maintenance of the OX Cloud MTA platform and Anti-Abuse tooling, working on code and policies to ensure high performance and reliability. - Design and continuous improvement of technical processes to detect, prevent, and respond to abuse across the OX Cloud platforms. - Optimization of workload efficiency through automation of routine tasks and enhancement of monitoring tools and processes. - Cross-functional collaboration to support product delivery and contribute to the overall direction of OX Cloud. - Development and sharing of expertise in abuse analysis, investigation techniques, and relevant tools within the team. - Development of internal components as well as responsibility for deploying and maintaining them at scale. - Preparation, review, and maintenance of Statements of Work (SOWs), contracts, and other technical and legal documentation. This is the tech stack you'll be working with: - Operating system: Linux - Protocols and standards: SMTP, SPF, DKIM, DMARC - Containerization, orchestration, and infrastructure management: Kubernetes, OpenStack, Terraform, Ansible - Programming languages: Golang, Python Qualifications - Several years of hands-on experience as an Anti-Abuse Engineer or Software Engineer. - Experience with distributed architectures, ideally in Kubernetes-based environments. - Familiarity with the MTA and AVAS vendor landscape, combined with a strong interest in automation across delivery monitoring and abuse handling. - Analytical mindset with enjoyment in solving complex security and deliverability challenges. - Continuous drive to improve abuse detection and prevention approaches, including testing and refining solutions. - Interest in evolving standards and willingness to work with RFCs when needed. - Strong verbal and written communication skills in English. - Intrinsic motivation to take ownership and a passion for open-source technologies. - Comfortable working in a remote-first environment with multicultural teams across different time zones. Benefits - The flexibility to work 100% remotely ensures a work environment that suits you best. - Flexible working hours that allow you to successfully combine your home and family responsibilities with work. - Getting together in-person for workshops and fun team events. - Time off to volunteer – and mental health support when you need it. - Financial relief through corporate benefits and a subsidy for ergonomic chairs and desks. - Further location-related benefits can be discussed in an initial talk. Company Description At Open-Xchange (OX), we develop open-source communication and collaboration software used by public sector organizations, telcos, and hosting providers to keep data secure and under their control. Our products cover email, collaboration, DNS security, and related services, and are used by millions of people worldwide. We work in a non-hierarchical organization that empowers everyone to take responsibility, stay focused, and contribute directly to the company’s success and customer value. Openness and diversity are core to OX. Different perspectives, backgrounds, and ways of thinking strengthen our collaboration and help us see the bigger picture. Join the team Join us in our fight for an open internet and deliver added value! Click “Apply now” to submit your application. Your contact person: Reach out to Justin ( recruiting@open-xchange.com ) from the People Team. He will be able to discuss current opportunities and tell you more about our exciting vision and mission @OX.