SentiLink stops more than 150,000 fraud attempts and verifies more than 3 million identities every day to protect both institutions and consumers. The problems we work on are challenging, and solving them takes deep domain expertise, rigorous analysis, and a willingness to dig into the details.
At SentiLink, you'll work alongside smart, highly collaborative colleagues who respect each other's time and judgment, take ownership, and follow through on their commitments. Together, we do truly meaningful work protecting the identities of innocent consumers and flagging the fraudsters attempting to exploit them.
We're well capitalized and growing quickly. We already serve 13 of the top 15 U.S. banks, we're expanding into new markets, and we're backed by Craft Ventures, Andreessen Horowitz, NYCA, and Max Levchin. We've been named to the Forbes Fintech 50 and as a 2026 FICO Industry Vanguard Decision Award Winner. We were also the first company to go live with the electronic Consent Based Social Security Number Verification (eCBSV) service, and we've testified before the U.S. Congress on the future of identity.
We want SentiLink to be the best place you've ever worked. We offer generous benefits and support a range of working arrangements, from fully remote to in-office. We are a digital-first company with strong collaboration across the U.S. and India, and we meet in person regularly to build relationships. We have offices in Austin, San Francisco, New York City, Seattle (Bellevue), Los Angeles, and Chicago in the U.S., and in Gurugram (Delhi) and Bengaluru in India.
About the Opportunity:As a Staff Infrastructure Engineer, you’ll own the technical direction and architecture of critical infrastructure that serves as the foundation of the SentiLink platform. You’ll operate as a technical leader across Infrastructure and partner closely with Engineering, Data Science, Analytics, SRE, and Security to design systems that improve developer velocity while increasing the reliability, scalability, security, and efficiency of our platform.
This is a highly hands-on role with cross-team scope and ownership. You’ll lead complex infrastructure initiatives from design through delivery, make architectural decisions across related systems, and help establish the standards and patterns used by engineering teams across SentiLink. You’ll be expected to identify systemic problems, navigate ambiguity and technical tradeoffs, and ensure complex projects maintain technical coherence as they scale across teams.
The ideal candidate combines deep infrastructure expertise with strong technical judgment and the ability to influence engineers and teams without relying on formal authority.
Python, Aurora PostgreSQL, AWS infrastructure (EC2, S3, RDS, Redshift, etc.), Kubernetes, Docker, Terraform, CICD, observability tooling (e.g., Datadog, Prometheus, SumoLogic), OpenSearch, and Linux
This is a remote, US-based role.
Responsibilities:Own the technical direction and architecture of critical infrastructure domains, establishing scalable patterns and standards across SentiLink.
Lead complex, multi-team infrastructure initiatives from design and alignment through implementation, migration, and production operation.
Design and evolve AWS and Kubernetes infrastructure that enables engineering teams to build, deploy, and operate systems reliably at scale.
Establish best practices for Terraform and infrastructure as code, including reusable patterns, testing, configuration management, and drift prevention.
Architect and improve CI/CD, developer tooling, and platform capabilities that increase engineering velocity and deployment safety.
Drive reliability and observability across the platform through effective monitoring, alerting, SLOs, incident response, and operational practices.
Own and evolve critical infrastructure across cloud networking, IAM, security, Kubernetes, and service mesh, partnering closely with SRE and Security.
Improve PostgreSQL and Aurora architecture, performance, scalability, and reliability, including migrations and production troubleshooting.
Lead technical design reviews and provide hands-on technical guidance, code review, and mentorship across Infrastructure and adjacent teams.
Partner with engineering leaders to identify systemic problems, navigate technical tradeoffs, and build platform-level solutions that benefit multiple teams.
8+ years of relevant software engineering, infrastructure, platform engineering, or SRE experience, including technical leadership across multiple teams or complex systems.
Deep experience designing and operating production infrastructure in AWS, including networking, compute, storage, IAM, and highly available architectures.
Deep hands-on experience designing, operating, scaling, and troubleshooting Kubernetes in production.
Deep experience with Terraform and infrastructure as code, including developing reusable patterns and standards adopted by other engineers.
Experience architecting, scaling, and migrating business-critical production systems with minimal downtime.
Strong SRE and observability experience, including monitoring, alerting, incident response, root cause analysis, and reliability engineering.
Strong experience with PostgreSQL and/or Aurora, including performance monitoring, query and index optimization, scaling, and production troubleshooting.
Experience designing or significantly improving CI/CD systems, developer tooling, and infrastructure platforms.
Strong software engineering fundamentals with experience using Python, Go, or another general-purpose language to build production systems or infrastructure tooling.
Demonstrated Staff-level leadership: leading cross-team technical initiatives, making architectural decisions under ambiguity, and influencing technical direction without formal authority.
$180,000/year - $250,000/year + equity + benefits
Employer paid group health insurance for you and your dependents
401(k) plan with employer match (or equivalent for non US-based roles)
Flexible paid time off
Regular company-wide in-person events
Home office stipend, and more!
Follow Through
Deep Understanding
Whatever It Takes
Do Something Smart
Skills Required
- 4+ years of relevant work experience
- Familiarity with AWS cloud infrastructure
- Experience managing infrastructure as code
- Experience developing cloud networking infrastructure
- Experience operating enterprise-size databases
- Experience with Python or Golang
What We Do
SentiLink is the leading fraud intelligence company, providing financial institutions and fintechs with purpose-built solutions for identity verification and fraud prevention. Our products detect synthetic fraud, identity theft, and hard-to-detect first-party fraud in real time — helping partners stop losses before they happen while approving more legitimate customers. Founded in 2017 by Naftali Harris and Max Blumenfeld, creators of the risk and fraud systems at Affirm, SentiLink was built on a simple premise: to truly stop fraud, you have to deeply understand it. That belief shapes everything, from the expert human intelligence that feeds our models to the way we work with our partners. We don't call them clients or customers, we call them partners, because that's genuinely how we think of them. Today, SentiLink processes 3M+ identity verifications per day for 500+ financial institutions, including 13 of the top 15 U.S. banks and 50+ fintech unicorns. We've raised $85M from investors including Andreessen Horowitz, Craft Ventures, and NYCA Partners.
Why Work With Us
At SentiLink, deep understanding isn't just a value, it's a company-wide expectation. For example, our Revenue Accounting Manager can walk you through SSN windows. That's not an exception; that's the norm. You'll collaborate closely, move fast, and do work that genuinely matters.
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SentiLink Offices
Remote Workspace
Employees work remotely.
SentiLink supports a variety of ways to work, ranging from fully remote to in-office. We have offices in multiple cities and if you’re located near one of these offices, we would love for you to spend time in the office regularly.
