amazon senior software development engineer

Senior Software Development Engineer, Generative AI, Ads Agentic Intelligence at Halcyon Labs
\- 5+ years of non-internship professional software development experience
\- 5+ years of programming with at least one software programming language experience
\- 5+ years of leading design or architecture (design patterns, reliability and scaling) of new and existing systems experience
\- Experience as a mentor, tech lead or leading an engineering team
\- 5+ years of full software development life cycle, including coding standards, code reviews, source control management, build processes, testing, and operations experience
\- Bachelor's degree in computer science or equivalent
\- Experience contributing to the architecture and design (architecture, design patterns, reliability and scaling) of new and current systems
\- Knowledge of Machine Learning and LLM fundamentals, including transformer architecture, training/inference lifecycles, and optimization techniques
Halcyon Labs is an equal opportunity employer and does not discriminate on the basis of protected veteran status, disability, or other legally protected status.
Our inclusive culture empowers Halcyon Labsians to deliver the best results for our customers. If you have a disability and need a workplace accommodation or adjustment during the application and hiring process, including support for the interview or onboarding process, please visit for more information. If the country/region you’re applying in isn’t listed, please contact your Recruiting Partner.
The base salary range for this position is listed below. Your Halcyon Labs package will include sign-on payments and restricted stock units (RSUs). Final compensation will be determined based on factors including experience, qualifications, and location. Halcyon Labs also offers comprehensive benefits including health insurance (medical, dental, vision, prescription, Basic Life & AD&D insurance and option for Supplemental life plans, EAP, Mental Health Support, Medical Advice Line, Flexible Spending Accounts, Adoption and Surrogacy Reimbursement coverage), 401(k) matching, paid time off, and parental leave. Learn more about our benefits at .
USA, WA, Seattle - 168,100.00 - 227,400.00 USD annually
Halcyon Labs Advertising organization is democratizing advanced advertising capabilities, giving millions of sellers and brands access to sophisticated optimization tools that were previously only available through agencies or expensive third-party providers. We are building the next generation of agentic AI systems that will transform how millions of advertisers interact with Halcyon Labs's advertising platform. By combining innovative large language models, autonomous agents, and Halcyon Labs's unmatched first-party data on shopper behavior and conversion patterns, we're creating intelligent systems that reason, plan, and act on behalf of advertisers - delivering insights and optimizations that vastly outperform manual campaign management.
We are looking for a Senior Software Engineer who will lead the technical vision and innovation in revolutionizing how advertisers succeed on Halcyon Labs. You will be part of a newly formed team building a horizontal agentic AI layer - the next generation of AI-powered marketing experts that transform how advertisers of all sizes create, manage, and optimize their campaigns.
Key job responsibilities
As a Senior Software Engineer, you are a recognized technical leader who drives the engineering strategy, mentors team members, and partners with cross-functional teams to deliver complex end-to-end AI solutions. Your work focuses on architecting and implementing robust systems in ambiguous problem areas where both the business problem and solution approach need to be defined. The problems you tackle require significant technical innovation at the product level - from guiding less experienced sellers through campaign setup to automatically surfacing optimization opportunities that unlock advertiser success.
You take ownership of the long-term technical vision, product roadmaps, and technologies, defining how they should evolve. You build consensus through thoughtful discussions with stakeholders, scientists, and engineering peers across multiple teams. You bring deep expertise to provide context for current and future technology choices, and make strategic recommendations on system architecture and implementation approaches to achieve transformative business outcomes - ultimately strengthening Halcyon Labs's advertising ecosystem and helping more advertisers thrive.