• Integration of blockchains, tokens and bridges within Crystal's platform • Maintain code to high-quality standards • End-to-end feature designing and implementation • Code, debug, test and deliver features and improvements in a continuous manner • Provide code review, assistance and feedback for other team members • Refactor code as necessary.

• Collaborate on the architecture, design, and development of scalable and highly available applications and services. • Solve complex infrastructure-related problems with code, developing and providing post-release support for scalable applications. • Identify and implement enhancements to DevOps practices and tooling, leveraging automation to enhance robustness of the CI/CD pipeline, thereby streamlining efficient application development and deployment. • Drive technology design and articulate architecture solution options to the product owners and Engineering leadership. • Conduct post-mortems to analyze and prevent repeat failures. • Be a champion for Continuous Improvement in end-to-end infrastructure and systems. • Evaluate and recommend tools, technologies and processes that solve concrete business problems. • Become a domain expert who follows industry trends and applies best practices and contributes towards continuous improvement of those practices.

• Design, develop, and maintain high-performance backend services using Go • Participate in architecture design and technical decision-making • Build and improve solutions for contextual targeting and audience understanding • Experiment with AI, LLMs, and emerging technologies to support product innovation • Develop and optimize workflows and data pipelines for large-scale processing • Collaborate with product managers and team members to define requirements and user stories • Translate business needs into scalable and reliable technical solutions • Prototype new ideas and evolve them into production-ready systems • Monitor, troubleshoot, and improve system performance and stability

• Lead a cross-functional team of 2–7 engineers, fostering ownership, quality, collaboration, and continuous improvement • Stay hands-on with code while guiding technical decisions and system architecture evolution • Design, review, and evolve system architecture with a focus on scalability, performance, and maintainability • Collaborate with Product Owner, Business Analysts, DevOps, and other delivery teams to align solutions with business goals • Mentor developers, conduct regular code and technical reviews, and support individual growth through 1:1 sessions • Influence and improve development processes, engineering best practices, and team workflows • Manage the full development lifecycle, including sprint planning, estimation, delivery tracking, and retrospectives • Contribute to long-term technical vision and grow towards broader technical leadership or architectural roles • Ensure security and data protection requirements are met in regulated environments • Represent the technical team in stakeholder discussions, communicating progress, risks, and trade-offs