Senior Backend Software Engineer

About the role

Kensho is S&P Global’s hub for AI innovation and transformation. We develop and deploy novel solutions to innovate and drive progress at S&P Global and its customers worldwide. The Applications group focuses on building web apps and APIs that deliver Kensho’s AI capabilities to our customers.

Responsibilities

• 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

Requirements

• 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

Qualifications

• Tech stack: Python, Flask, FastAPI, Django REST Framework, PostgreSQL, Celery, RabbitMQ, Redis, Kafka, Jsonnet, Agentic, Claude Code, Codex, Cline
• Experience with AWS, Amazon EKS, Sentry, Prometheus, Git, Jenkins, Github Actions

Skills

• Python
• Flask
• FastAPI
• Django REST Framework
• PostgreSQL
• Celery
• RabbitMQ
• Redis
• Kafka
• Jsonnet
• Agentic
• Claude Code
• Codex
• Cline

Benefits

• 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

Pay

The anticipated base salary range for the position is 150k–225k. This role is eligible for an annual incentive bonus and equity plans.

Schedule

Full-time