Infrastructure Engineer Jobs in San Francisco, CA
Infrastructure Engineer jobs in San Francisco are concentrated in SoMa, the Financial District, and Mission Bay, with strong demand from OpenAI, Anthropic, and Together AI and others across cloud infrastructure, fintech, and enterprise software. Hiring is active year-round, with openings for engineers who specialize in Kubernetes, network architecture, and site reliability. Find a role that fits below and apply directly.
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About Us
Salient builds AI agents for regulated financial services. Our agents automate loan servicing, compliance, collections, recovery, insurance claims, and disputes for banks, captives, and specialty lenders.
We are:
Backed by a16z and Y Combinator, with $75M raised in Series A funding
Cash flow positive and profitable, with mid eight figure ARR achieved in under two years
Already serving more than 20% of the auto lending industry
Processing millions of real customer calls and transactions every day
Fully deployed in production with major financial institutions
Actively expanding into new financial services segments
Building together in person in San Francisco
We are deeply integrated with our customers, own the full technology stack, and move quickly to bring modern AI into regulated industries where precision, reliability, and performance matter.
About the Role
We're hiring a Telephony Infrastructure Engineer to own the voice platform behind Salient's AI agents: the SIP edge, Asterisk, the voice audio and dialing layers, and the call servers that connect borrowers to our agents. You will work directly with our AI agent engineers, telephony specialist, customer success, and carriers.
This is a hands-on ownership role. You will finish work in flight, make the platform reliable and safe to change, and prove it can handle the next order of magnitude of call volume. You will also design and implement customer telephony integrations and make them increasingly self-serve.
What You'll Own
- Finishing the Asterisk migration: cutting over remaining customers, trunks, and call flows with no regression, then retiring the legacy path.
- Reliability of the voice audio and dialing layers: SLOs, monitoring, incident response, and eliminating recurring failure modes.
- Zero-downtime call-server deployments: draining, graceful shutdown, safe rollout, and rollback without dropping live calls.
- Building tools to manage Kamailio and Asterisk reconfiguration without server restarts inside Kubernetes
- Backpressure, load shedding, and self-recovery when carriers, media, or AI dependencies degrade.
- Load testing and capacity planning that validates thousands of concurrent calls and CPS at the SIP edge.
- Voice observability: call-quality and platform-health metrics, alerting, runbooks, and postmortems.
- Security of the voice edge against scanning, toll fraud, and abuse.
- Customer telephony integrations: custom SIP trunks (e.g., Genesys, Bandwidth), call transfers, SIP header passing, and API prototypes with new contact-center platforms.
- Self-serve setup: productized trunk configurations, validation tooling, and docs that shorten time to go live.
What We're Looking For
- You've run production voice infrastructure at meaningful scale and have been on call for it.
- You know SIP, SDP, and RTP deeply and debug from traces and pcaps.
- You can debug EC2/K8s networking issues that result in deadair—and develop monitoring and testing plans to minimize deadair.
- You understand real-time media, WebRTC, and latency budgets.
- You design for backpressure, graceful degradation, and safe deploys of stateful services.
- You've built load tests that found real bottlenecks before customers did.
- You write clear design docs, runbooks, and postmortems.
- You've integrated SIP trunks with customer contact centers and carriers, including transfers and header passing.
Nice to Have
- Experience with Kamailio, Asterisk, OpenSIPS, FreeSWITCH, or rtpengine.
- Experience developing regional failover for SIP
- Experience with latency-aware multi-homing
- Experience with contact-center, dialer, CpaaS, or carrier infrastructure.
- Experience with AI voice agents, speech pipelines, or regulated industries such as lending.
- Experience with contact-center platforms such as Genesys, Five9, NICE, or Amazon Connect.
Why This Role
Every Salient product depends on a phone call working. You will own the platform that carries those calls and make it reliable, easy to change, and ready for the volume our customers are about to send it.
At Salient, we’re building at the edge of AI - fast, focused, and with real ownership. Sprints and major launches move quickly, and we look for people who are energized by that pace. Our team typically works around 60 hours per week, beginning at 8:00 AM, with four days spent collaborating in person at our San Francisco office.
We also offer a benefits package designed to support our full-time employees: medical, dental, and vision coverage, a generous 401(k), and catered lunches.
By applying, you acknowledge that your personal information will be processed in accordance with our Privacy Policy.
Compensation Range: $200K - $300K
About Us
Salient builds AI agents for regulated financial services. Our agents automate loan servicing, compliance, collections, recovery, insurance claims, and disputes for banks, captives, and specialty lenders.
We are:
Backed by a16z and Y Combinator, with $75M raised in Series A funding
Cash flow positive and profitable, with mid eight figure ARR achieved in under two years
Already serving more than 20% of the auto lending industry
Processing millions of real customer calls and transactions every day
Fully deployed in production with major financial institutions
Actively expanding into new financial services segments
Building together in person in San Francisco
We are deeply integrated with our customers, own the full technology stack, and move quickly to bring modern AI into regulated industries where precision, reliability, and performance matter.
About the Role
We're hiring a Telephony Infrastructure Engineer to own the voice platform behind Salient's AI agents: the SIP edge, Asterisk, the voice audio and dialing layers, and the call servers that connect borrowers to our agents. You will work directly with our AI agent engineers, telephony specialist, customer success, and carriers.
This is a hands-on ownership role. You will finish work in flight, make the platform reliable and safe to change, and prove it can handle the next order of magnitude of call volume. You will also design and implement customer telephony integrations and make them increasingly self-serve.
What You'll Own
- Finishing the Asterisk migration: cutting over remaining customers, trunks, and call flows with no regression, then retiring the legacy path.
- Reliability of the voice audio and dialing layers: SLOs, monitoring, incident response, and eliminating recurring failure modes.
- Zero-downtime call-server deployments: draining, graceful shutdown, safe rollout, and rollback without dropping live calls.
- Building tools to manage Kamailio and Asterisk reconfiguration without server restarts inside Kubernetes
- Backpressure, load shedding, and self-recovery when carriers, media, or AI dependencies degrade.
- Load testing and capacity planning that validates thousands of concurrent calls and CPS at the SIP edge.
- Voice observability: call-quality and platform-health metrics, alerting, runbooks, and postmortems.
- Security of the voice edge against scanning, toll fraud, and abuse.
- Customer telephony integrations: custom SIP trunks (e.g., Genesys, Bandwidth), call transfers, SIP header passing, and API prototypes with new contact-center platforms.
- Self-serve setup: productized trunk configurations, validation tooling, and docs that shorten time to go live.
What We're Looking For
- You've run production voice infrastructure at meaningful scale and have been on call for it.
- You know SIP, SDP, and RTP deeply and debug from traces and pcaps.
- You can debug EC2/K8s networking issues that result in deadair—and develop monitoring and testing plans to minimize deadair.
- You understand real-time media, WebRTC, and latency budgets.
- You design for backpressure, graceful degradation, and safe deploys of stateful services.
- You've built load tests that found real bottlenecks before customers did.
- You write clear design docs, runbooks, and postmortems.
- You've integrated SIP trunks with customer contact centers and carriers, including transfers and header passing.
Nice to Have
- Experience with Kamailio, Asterisk, OpenSIPS, FreeSWITCH, or rtpengine.
- Experience developing regional failover for SIP
- Experience with latency-aware multi-homing
- Experience with contact-center, dialer, CpaaS, or carrier infrastructure.
- Experience with AI voice agents, speech pipelines, or regulated industries such as lending.
- Experience with contact-center platforms such as Genesys, Five9, NICE, or Amazon Connect.
Why This Role
Every Salient product depends on a phone call working. You will own the platform that carries those calls and make it reliable, easy to change, and ready for the volume our customers are about to send it.
At Salient, we’re building at the edge of AI - fast, focused, and with real ownership. Sprints and major launches move quickly, and we look for people who are energized by that pace. Our team typically works around 60 hours per week, beginning at 8:00 AM, with four days spent collaborating in person at our San Francisco office.
We also offer a benefits package designed to support our full-time employees: medical, dental, and vision coverage, a generous 401(k), and catered lunches.
By applying, you acknowledge that your personal information will be processed in accordance with our Privacy Policy.
Compensation Range: $200K - $300K
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Find Infrastructure Engineer JobsInfrastructure Engineer Job Market in San Francisco
Who's Hiring
- OpenAI73
- Anthropic32
- Together AI16
- JPMorganChase16
- ivo12
Top Industries Hiring
- Technology & Software122
- Science & Research53
- Artificial Intelligence16
- Biotechnology & Pharmaceuticals8
- Retail4
Infrastructure Engineer Jobs in San Francisco: Frequently Asked Questions
How do I get a infrastructure engineer job in San Francisco?
Focus your search on SoMa and Mission Bay, where cloud platforms, fintech firms, and enterprise software companies concentrate most of their infrastructure hiring. Candidates with hands-on Kubernetes, Terraform, or cloud networking experience stand out in this market. Targeting mid-size tech companies and financial services firms in the Financial District also opens doors, since both sectors hire infrastructure engineers at multiple seniority levels year-round.
Which companies hire infrastructure engineers in San Francisco?
San Francisco infrastructure engineer roles are posted by OpenAI, Anthropic, and Together AI and others right now, based on current listings on Migrate Mate as of September 2026. San Francisco's mix of hyperscale tech firms, fintech scaleups, and healthcare technology companies means openings appear across a wide range of employer sizes and verticals.
Are there remote infrastructure engineer jobs in San Francisco?
Yes, though availability depends on the specialty. Roles involving hands-on data center work, physical network configuration, or on-site hardware are almost always in-person, while cloud infrastructure and DevOps-focused positions are more likely to offer flexibility. About 49% of infrastructure engineer openings tied to San Francisco are remote or hybrid as of September 2026, with cloud and platform engineering roles making up the largest share of those flexible positions.
How can I get a infrastructure engineer job in San Francisco with little or no experience?
The most realistic entry path in San Francisco is a junior systems administrator or IT operations role at a mid-size tech company or startup in SoMa, which often transitions into infrastructure work within one to two years. San Francisco's dense startup ecosystem hires generalist engineers who can grow into infrastructure specialists, making smaller companies a stronger starting point than large enterprises. Building proficiency with AWS, GCP, or Azure before applying sharpens any entry-level application considerably.
Which industries hire the most infrastructure engineers in San Francisco?
Most infrastructure engineer openings in San Francisco sit in Technology & Software, Science & Research, and Artificial Intelligence, per current listings on Migrate Mate as of September 2026. San Francisco's concentration of cloud-native technology companies and regulated financial services firms drives consistent infrastructure hiring, since both sectors require reliable, scalable systems built and maintained by dedicated engineering teams.
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