Senior Backend Software Engineer

What You'll Do: - Design, develop, test, document, deploy, maintain, and improve software - Manage individual project priorities, deadlines, and deliverables - Work with key stakeholders to develop system architectures, API specifications, implementation requirements, and complexity estimates - Test assumptions through instrumentation and prototyping - Promote ongoing technical development through code reviews, knowledge sharing, and mentorship What You'll Need: - At least five years of direct experience developing customer-facing APIs within a team - Thoughtful and efficient communication skills (both verbal and written) - Experience developing RESTful APIs using a variety of tools - Experience turning abstract business requirements into concrete technical plans - Experience working across many stages of the software development lifecycle - Sound reasoning about the behavior and performance of loosely-coupled systems - Proficiency with algorithms (including time and space complexity analysis), data structures, and software architecture - At least one domain of demonstrable technical depth Technologies & Tools We Use : - Development: Python, Flask, FastAPI, Django REST Framework, PostgreSQL, Celery, RabbitMQ, Redis, Kafka, Jsonnet, Agentic Coding Tools (Claude Code, Codex, Cline) - Operations: AWS, Amazon EKS, Sentry, Prometheus, Git, Jenkins, Github Actions At Kensho, we pride ourselves on providing top-of-market benefits, including: - Medical, Dental, and Vision insurance - 100% company paid premiums - Unlimited Paid Time Off - 26 weeks of 100% paid Parental Leave (paternity and maternity) - 401(k) plan with 6% employer matching - Generous company matching on donations to non-profit charities - Up to $20,000 tuition assistance toward degree programs, plus up to $4,000/year for ongoing professional education such as industry conferences - Plentiful snacks, drinks, and regularly catered lunches - Dog-friendly office (CAM office) - Bike sharing program memberships - Compassion leave and elder care leave - Mentoring and additional learning opportunities - Opportunity to expand professional network and participate in conferences and events