Two Sigma is a leading quantitative investment management and trading firm. The company applies a scientific approach to investing, combining cutting-edge technology, artificial intelligence, data science, and quantitative research with rigorous human inquiry to capitalize on market opportunities and deliver alpha for investors. Our team of engineers, quantitative researchers and data scientists looks beyond the traditional to test hypotheses and develop creative solutions to some of the world’s most complex economic problems. Security Development and Infrastructure team and the Tech Risk teams are responsible for Two Sigma's most critical authentication, authorization, and security infrastructure systems. We build, maintain, and evolve world-class security solutions including identity management systems, access control platforms, and configuration management databases that protect the company's technology while meeting evolving business needs. We are seeking experienced software engineers to architect and build the next generation of our security infrastructure, redefining legacy systems into modern, scalable solutions. This role combines hands-on software development with technical leadership opportunities, requiring you to make critical architectural decisions while mentoring team members and driving cross-organizational initiatives to improve our security posture. You will take on the following responsibilities: • Develop robust software in either Java, Go, or Python to enhance system capabilities, improve performance, and reduce operational complexity • Lead architectural decisions and technical strategy for migrating legacy infrastructure to modern, cloud-native platforms while maintaining high security and reliability standards • Mentor junior engineers and influence technical direction through code reviews and design discussions • Drive team-wide and cross-team projects to improve system observability, monitoring, and documentation • Research industry standards, contribute to open source projects, and evaluate emerging security technologies for potential adoption • Become a technical domain authority on running our authentication, authorization, and identity management systems You should possess the following qualifications: • BS in Computer Science, Software Engineering, or another technical discipline • Experience in software engineering roles building and maintaining distributed systems at scale • Proficiency in programming languages such as Java, Python, or Go • A deep understanding of system design principles, including distributed systems architecture and database management • Experience with authentication and authorization protocols, configuration management tools, CI/CD and security standards • Consistent track record of leading technical initiatives and making architectural decisions • Strong communication skills with ability to work effectively across teams and with collaborators Preferred Qualifications: • Experience with containerization technologies (Docker) and orchestration platforms (Kubernetes) • Knowledge of entitlement systems and audit processes within financial- or technology organizations • Familiarity with identity systems and technologies • Proficiency in SQL and large-scale data management • Experience with cloud infrastructure (GCP, AWS, or Azure) and hybrid cloud architectures • Expertise in zero trust security models and implementation • Contributions to open source projects or published technical content You will enjoy the following benefits: • Core Benefits: Fully paid medical and dental insurance premiums for employees and dependents, competitive 401k match, employer-paid life & disability insurance • Perks: Onsite gyms with laundry service, wellness activities, casual dress, snacks, game rooms • Learning: Tuition reimbursement, conference and training sponsorship • Time Off: Generous vacation and unlimited sick days, competitive paid caregiver leaves • Hybrid Work Policy: Flexible in-office days with budget for home office setup The base pay for this role will be between $165,000 and $250,000. This role may also be eligible for other forms of compensation and benefits, such as a discretionary bonus, health, dental and other wellness plans and 401(k) contributions. Discretionary bonus can be a significant portion of total compensation. Actual compensation for successful candidates will be carefully determined based on a number of factors, including their skills, qualifications and experience. We are proud to be an equal opportunity workplace. We do not discriminate based upon race, religion, color, national origin, sex, sexual orientation, gender identity/expression, age, status as a protected veteran, status as an individual with a disability, or any other applicable legally protected characteristics. Two Sigma is committed to providing reasonable accommodations to qualified individuals in accordance with applicable federal, state, and local laws. If you believe you need an accommodation, please visit our website for additional information.