Software Development Engineer II - Threat Intelligence Systems, ACTI Engineering

Software Development EngineerThe Amazon Cyber Threat Intelligence (ACTI) organization is responsible for investigating, analyzing, and defending against sophisticated cyber threats targeting Amazon's global businesses and customers. ACTI combines technical expertise, strategic analysis, and advanced tooling to identify emerging threats, track adversary activities, and provide actionable intelligence across Amazon's security ecosystem. As a Software Development Engineer within ACTI Engineering, you will architect and contribute to the development of mission-critical distributed systems that power Amazon's threat intelligence capabilities. You will make key technical decisions that shape our platform's architecture, designing scalable solutions that process, analyze, and correlate vast amounts of security data across Amazon's global infrastructure. Your technical leadership will directly influence ACTI's ability to detect, analyze, and respond to emerging security threats at scale. This position requires that the candidate selected be a US Citizen. Key job responsibilities: Own and architect critical components of ACTI's threat intelligence platforms, making key technical decisions that impact system scalability, performance, and reliability Design and implement distributed systems that process petabytes of security data Lead the development of service-oriented architectures that integrate complex threat intelligence workflows Drive technical decisions around data modeling, storage solutions, and processing frameworks Own the full software development lifecycle, from design through deployment and operational excellence Mentor junior engineers on system design, coding practices, and architectural patterns Partner with threat intelligence analysts to translate complex requirements into scalable technical solutions Building some of the largest scale intelligence tooling on earth to defend against evolving security threats Production incidents and being part of an on-call rotation Technical Requirements: Strong experience designing and implementing distributed systems at scale Deep expertise in service-oriented architecture design patterns Proven track record of leading technical projects and making architectural decisions Strong proficiency in Python and Typescript Experience building production-grade applications Experience with AWS services and cloud-native architectures Demonstrated ability to optimize and scale data processing pipelines Experience with monitoring, troubleshooting, and optimizing distributed systems About the team: Diverse Experiences: Amazon Security values diverse experiences. Even if you do not meet all of the qualifications and skills listed in the job description, we encourage candidates to apply. If your career is just starting, hasn't followed a traditional path, or includes alternative experiences, don't let it stop you from applying. Why Amazon Security? At Amazon, security is central to maintaining customer trust and delivering delightful customer experiences. Our organization is responsible for creating and maintaining a high bar for security across all of Amazon's products and services. We offer talented security professionals the chance to accelerate their careers with opportunities to build experience in a wide variety of areas including cloud, devices, retail, entertainment, healthcare, operations, and physical stores. Inclusive Team Culture: In Amazon Security, it's in our nature to learn and be curious. Ongoing DEI events and learning experiences inspire us to continue learning and to embrace our uniqueness. Addressing the toughest security challenges requires that we seek out and celebrate a diversity of ideas, perspectives, and voices. Training & Career Growth: We're continuously raising our performance bar as we strive to become Earth's Best Employer. That's why you'll find endless knowledge-sharing, training, and other career-advancing resources here to help you develop into a better-rounded professional. Work/Life Balance: We value work-life harmony. Achieving success at work should never come at the expense of sacrifices at home, which is why flexible work hours and arrangements are part of our culture. When we feel supported in the workplace and at home, there's nothing we can't achieve.