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GIS Solution Engineer - Local Government (Northeast)
Esri
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Experience integrating software solutions with other business systems including data warehousing, BI, CRM, ERP, and analytics platforms
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Site Reliability Engineer I - Paze
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Cybersecurity Engineer
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We are seeking a Cyber Security Systems Engineer to join our professional engineering team. This position will support cybersecurity assessments and hardening of operational and support…
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IC
Field Engineer II - Audio Visual
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- $40 to $45 USD / hour
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Data & Intergrations Engineer
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United States
MCA is seeking a Data & Integrations Engineer to serve as the technical bridge between its Data Warehouse and Business Systems teams, and to lead the organization's adoption of AI-assisted…
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Systems Engineer
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Software Development Engineer II, AWS Throttling
Amazon Web Services, Inc.
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As an engineer on our team you will become an expert in what we have already built and help us improve what we have by implementing new features and improving the ones that already exist.
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Systems Development Engineer, Tech-SC SPIE Engineering
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An exciting opportunity for a Systems Development Engineer I to join our team and contribute to the transformation of our supply chain technology architecture.
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Software Development Engineer, Autonomous Fleet Services
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Bellevue, WA · North Reading, MA
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Control Technician 1
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Boston, MA
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Manage, lead, and mentor engineer(s) and/or technician(s).
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Senior Automation Engineer, Delta V
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The Senior Automation Engineer, Delta V supports the design and maintenance of site’s Delta V systems, including project execution, upgrades, system performance, vendor management,…
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Principal Cybersecurity Engineer
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…support a wide range of critical security controls at Ally. The engineer works with a team of security engineers within the Engineering and Operations Department todeploy, sustain and…
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Infrastructure Engineer
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Chief Engineer - FT
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The Chief Engineer is responsible for the day-to-day operations of the engineering division. In the absence of the Director, the assistant will assume the administrative, financial and…
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Wiring Technician Lead
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…electrical switchgear and controls for a variety of applications. We engineer, build, and deploy specialized switchgear and control systems for the power generation industry. We are agile,…
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Assembly Technician
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Sr. Engineer - Reliability
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…Electronics, and we do it by creating world-class Electronic systems. We are a premier supplier for the global automotive industry with full capabilities in design, development, testing and…
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Biomedical Engineer (Regional Clinical Specialist)
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- $65,000 to $75,000 USD / year
Analyze and resolve product issues for Brainlab systems at assigned Account(s) via Salesforce through. detailed analysis and utilization of critical thinking via technical training and…
Added 4 mins ago
Manufacturing Engineer II (Weld)
Barnes Group
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…objectives for profitable, sustainable growth. The Manufacturing Engineer will provide process engineering service and technical support to the shop floor for new and existing products to…
Added 4 mins ago
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Senior Software Engineer
impact.com
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- $150,000 to $170,000 USD / year
As a Full Stack Software Engineer at impact.com, you'll work on a global team, building real time data processes at-scale. You can be part of the design and build of distributed systems…
Added 4 mins ago
I
Senior Software Engineer
impact.com
Seattle, WA
- $210,000 to $238,000 CAD / year
As a Full Stack Software Engineer at impact.com, you'll work on a global team, building real time data processes at-scale. You can be part of the design and build of distributed systems…
Added 4 mins ago
Product Development Engineer - Fuel Systems EVAP Component and BETP Engineer
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This opening is for a fuel systems EVAP core components and BETP/Canister Performance D&R engineer position. The D&R would be a member of a larger core component D&R team tasked with…

Tolmo

Research Engineer, AI Security

San Francisco, CA, United States

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Job details

Posting language: English
Posted: Nov 2, 2026

Original job description

ABOUT TOLMO

Tolmo is cybersecurity for the age of AI. Coding agents now ship software faster than any human team can review or secure it; 100+ pull requests per engineer per week is no longer an outlier, and attackers are using the same agents to find and exploit weaknesses in days, not months. The old playbook of quarterly pentests and endless alert queues breaks at this speed.

We're building a new security playbook. Tolmo runs a fleet of AI security agents that reason over a live graph of your entire production system (code, CI, cloud, and telemetry) and continuously attack a faithful copy of it like a real adversary. Every finding arrives validated, with its blast radius and a remediation plan that lands in your workflow, ready for a coding agent to fix. Hours to integrate, days to your first validated finding.

We've done this before: Tolmo's founders built Sqreen (acquired by Datadog) and led security products that thousands of organizations trusted. We're backed by Accel and Y Combinator and just getting started.

THE ROLE

Our product is only as good as our agents' judgment. As a Research Engineer on AI Security, you make that judgment better and measurably so: how our agents plan, reason over a graph of a customer's production system, decide what is worth testing, and know when a finding is real.

This sits between research and engineering. In one week you might design an eval that catches a new class of false positive, change how an agent plans a multi-step investigation, compare models on a hard benchmark, and harden the agents themselves against prompt injection from the systems they inspect. You'll work directly with the founders, our engineers, and the security leads who run pentests with our agents, and your work ships to production.

WHAT YOU'LL DO

Agent reasoning: improve how our agents plan, use tools, and reason over a live graph of code, cloud, and telemetry, so they reach real findings faster and with fewer dead ends.
Evaluation: build the evals, benchmarks, and graders that tell us whether an agent actually got better, and make them part of how every change ships.
Model selection and tuning: compare models, prompts, and agent designs on cost, latency, and quality, and turn the results into production decisions.
Model and agent security: defend our agents against prompt injection, data exfiltration, and manipulation by the very systems they test, and research the security of LLM-based applications our customers build.
Reliability at scale: make long-running agents dependable across thousands of runs: verification, self-checks, and sensible stopping.
Learning from the field: study agent runs from customer engagements, find where reasoning broke, and turn each failure into an eval and a fix.

WHAT WE'RE LOOKING FOR

Hands-on experience building, evaluating, or improving LLM-based agents or systems in production.
A rigorous, empirical approach: you design experiments, distrust single anecdotes, and let the evals decide.
Strong engineering skills: you write production-quality code (Python, TypeScript, or Go) and build tools other people rely on.
A working understanding of security, or a strong drive to learn it fast: how real systems are attacked and how findings are validated.
Familiarity with LLM security risks such as prompt injection, jailbreaks, and tool misuse.
You build with AI coding agents daily (e.g., Claude Code, Cursor) and have opinions about what makes them reliable.

NICE TO HAVE

Research background in machine learning, AI safety, or security: publications, open-source work, or talks.
Offensive security experience: penetration testing, red teaming, bug bounty, or CTFs.
Experience with reinforcement learning, fine-tuning, or synthetic data generation for agents.
Experience with graph data models or reasoning over structured data.
Prior early-stage startup experience.

COMPENSATION & BENEFITS

Competitive salary, depending on level and experience.
Early-stage equity: you're joining early; you'll own a real piece of what we build.
Comprehensive medical, dental, and vision coverage, and the equipment you need to do your best work.
Based in San Francisco; we work in person.

Tolmo is building a team with wide-ranging backgrounds, perspectives, and paths into security; we think it makes our product and judgment better. If you're excited about this role but don't match every point above, we'd still like to hear from you. We're an equal opportunity employer and welcome applicants of every background.

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