Sr. Software Developer L4

Key Responsibilities Design scalable AI agent workflows using AWS Bedrock and Lang Chain. Lead design reviews and establish engineering best practices. Mentor and guide junior engineers and fresh graduates. Build multi-agent systems using Agent Core. Develop AI Skills, Tools, Knowledge Sources, and Agent orchestration workflows. Implement prompt engineering and agent evaluation frameworks. Design Retrieval-Augmented Generation (RAG) solutions. Build and expose domain-driven APIs using Fast API. Design MCP tools and server architecture. Implement authentication, authorization, audit trails, and governance controls. Establish observability, monitoring, and tracing for AI workflows. Skills: AI & LLM Technologies: AWS Bedrock, Agentic AI architectures, Lang Chain / Lang Graph, Prompt Engineering Backend Engineering: Python (Expert), Fast API, REST APIs, Event-driven architecture, Microservices Cloud Technologies: AWS, Lambda, ECS/EKS, API Gateway, IAM, Cloud Watch, Dynamo DB or Postgre SQL We offer a competitive total rewards package including a base salary determined based on the role, experience, skill set, and location. For those in eligible roles, discretionary incentive compensation may be awarded in recognition of individual achievements and contributions. We also offer a range of benefits and programs to meet employee needs, based on eligibility. We are an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability, or status as a protected veteran. By submitting an application for this job, you acknowledge that any personal data or personally identifiable information that you provide to us will be processed in accordance with our Candidate Privacy Notice. Submit your resume today! Learn about Aptos' Global Culture Aptos is the global leader in unified commerce solutions for retailers. Hundreds of leading retail brands around the world trust our modern, cloud-native POS and advanced enterprise solutions to power innovative shoppinfg experiences that inspire loyalty, maximize revenue and reduce costs. Be part of the technology future of one of the world's largest industries. Introduce yourself to our recruiters and we'll get in touch if there's a role that seems like a good match. For more than 40 years, Aptos has been 100% focused on the future of retailing—while simultaneously helping to build great futures for our colleagues. We’re constantly investing in innovative technologies to ensure our solutions are fully capable of keeping pace with the ever-evolving expectations of the modern consumer. We are a global organization supporting a global client base located in more than 70 countries. Check out the list below of our open positions around the world. If this sounds like your kind of opportunity, and if you have what it takes to excel with the industry’s best, we invite you to join the ride.