As a Full-Stack Software Engineer II you'll build AI-centric web applications using TypeScript collaborate on product and technical decisions and optimize for learning and high iteration velocity.

Kensho is S&P Global's hub for AI innovation and transformation. With expertise in machine learning natural language processing and data discovery we develop and deploy novel solutions to innovate and drive progress at S&P Global and its customers worldwide. Kensho's solutions and research focus on business and financial generative AI applications agents data retrieval APIs data extraction and much more.
At Kensho we hire talented people and give them the autonomy and support needed to build amazing technology and products. We collaborate using our teammates' diverse perspectives to solve hard problems. Our communication with one another is open honest and efficient. We dedicate time and resources to explore new ideas but always rooted in engineering best practices. As a result we can innovate rapidly to produce technology that is scalable robust and useful.
Kensho's Applications group develops the web apps and APIs that deliver Kensho's AI capabilities to our customers. Our teams are small product-focused and intent on shipping high-quality code that best leverages our efforts. We're collegial humble and inquisitive and we delight in learning from teammates with backgrounds skills and interests different from our own.
Our App Experiences team focuses on breathing life into novel ML capabilities translating them into valuable and intuitive end-user experiences. We collaborate closely with our Product and Design teams to understand user needs looking for creative applications and delivery mechanisms of our technology. We demo early and often and we keep a tight iteration loop. We sweat the details when it comes to UX.
As a Full-Stack Software Engineer II you will build AI-centric web applications in TypeScript ranging from experimental POCs to full-fledged product offerings. You'll work with the team to understand trade-offs and make technical and architectural decisions. You'll aim for high iteration velocity and optimize for learning. The ideal candidate loves product and views technology as a means not an end and is excited to gain familiarity with all aspects of the software development lifecycle.
At Kensho we believe in flexibility-first and give our employees the opportunity to work from where they feel most productive and engaged (must be in the United States). We also value in-person collaboration so there may be times when travel to one of our Kensho hubs (e.g. Cambridge MA or NYC) will be required for team meetings or company events.
Kensho states that the anticipated base salary range for the position is 130 -175k. In addition this role is eligible for an annual incentive bonus and equity plans. At Kensho it is not typical for an individual to be hired at or near the top of the range for their role and compensation decisions are dependent on the facts and circumstances of each case.
What You'll Do:

• Build full-stack and SPA TypeScript applications ranging from experiments to flagship products
• Collaborate on product decisions and communicate technical constraints and considerations
• Collaborate on technical decisions and conventions
• Quickly level up and learn from the team and the broader organization via mentorship code review knowledge sharing etc.
• Manage project priorities estimates and deliverables

What You'll Need:

• At least three years of direct experience building commercial web applications in JavaScript/TypeScript
• At least two years of that experience working directly on web UIs in a modern framework
• At least one domain of interest to develop deep expertise (e.g. web performance design systems framework knowledge etc.)
• Some interest in product design
• Kind and efficient communication skills for both technical and non-technical audiences
• Ability to deeply understand product and technical requirements

Technologies & Tools We Use:

• Development : TypeScript React Next.js Tailwind LangGraph AI SDK Drizzle
• Ops : Git GitHub Amazon EKS AWS Sentry Langfuse Prometheus

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 $20000 tuition assistance toward degree programs plus up to $4000/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

Recruitment Fraud Alert:
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We are an equal opportunity employer that welcomes future Kenshins with all experiences and perspectives. Kensho is headquartered in Cambridge MA with an additional office location in New York City. All qualified applicants will receive consideration for employment without regard to race color religion sex sexual orientation gender identity or national origin.
Job ID: 325005
Posted On: 2026-02-05
Location: Cambridge Massachusetts United States