• Design and build high-quality features for aging parents, pre-teen wearable users, and community groups — experiences that are safe, intuitive, and genuinely useful. • Work with AI (Claude Code) as a first-class collaborator — your primary workflow involves orchestrating agents to create specs, generate code and tests, verify results, and perform reviews. • Help define and codify AI-Native engineering practices for the Circle Expansion team, establishing playbooks the broader org can adopt. • Build across the full stack as needed — shipping polished, performant, and reliable experiences to tens of millions of users. • Collaborate closely with product managers and designers to turn complex user problems into elegant, scalable engineering solutions. • Contribute to architectural decisions, code reviews, and a culture of craft and continuous improvement. • Participate in on-call rotation and incident response. • Use agentic workflows to dramatically increase the delivery of strong outcomes — moving faster without sacrificing quality. • Mentor team members and contribute to team processes, technical standards, and help evolve the team's AI-native engineering practices. • Support performance, reliability, and accessibility across the features you own.

• As a Software Engineer, you will design, develop, and optimize large-scale, distributed solutions. • You'll work on new features from idea to production. • You build AI-driven capabilities, and solve complex engineering problems in a highly collaborative environment. • Taking ownership of AI-driven security initiatives, influencing solutions beyond individual tasks. • Initiating and develop POCs, many leveraging AI and data-driven approaches, and evolve them into production-ready features. • Designing and building core enterprise security infrastructure, from architecture through deployment, with real-world impact. • Developing, operating backend services in complex, distributed environments. Balance engineering with technical leadership through design & code reviews & monitoring. • Collaborating closely with engineers, product managers, QA, UX/UI designers, and security experts across the organization. • Identifying and implementing improvements to reliability, performance, observability, and test coverage.

• Work closely with the Head of Engineering and the CTO/co-founder • Collaborate with a small strike team across a range of complex trading and asset management problems • Work autonomously and proactively propose new ideas and solutions • Improve the backend architecture for the projects you work on • Maintain the existing toolset and contribute to the implementation of new tools • Participate in team meetings for coordination • Maintain Constella’s infrastructure for existing and future tools

• Collaborate with analysts, developers, programmers, and designers in conceptualizing and development of software programs and applications • Define, develop, and document software’s business requirements, objectives, deliverables, and specifications on a project-by-project basis in collaboration with internal users and departments • Design, develop, document, and implement new applications and application enhancements according to business and technical requirements • Assist in defining software development project plans, including scoping, scheduling, and implementation • Recommend, schedule, and perform software improvements and upgrades • Consistently design, write, translate, and code software programs and applications according to specifications • Write new and modify existing programming scripts to enhance functionality and/or performance of company applications as necessary • Design, run and monitor software performance tests on new and existing programs for the purposes of correcting errors, isolating areas for improvement, and general debugging • Develop and maintain technical documentation and development guidelines • Train end users to operate new or modified programs