Staff Security and Privacy Engineer

Stripe

WHO WE ARE ABOUT STRIPE Stripe is a financial infrastructure platform for businesses. Millions of companies—from the world's largest enterprises to the most ambitious startups—use Stripe to accept payments, grow their revenue, and accelerate new business opportunities. Our mission is to increase the GDP of the internet, and we have a staggering amount of work ahead. That means you have an unprecedented opportunity to put the global economy within everyone's reach while doing the most important work of your career. ABOUT THE TEAM Before Stripe, every growing internet platform had a payments team. Today, every growing internet platform has an Identity team. Identity verification has become core economic infrastructure for online businesses — enabling them to digitally verify their users' identities for fraud prevention, regulatory compliance, and trust and safety purposes. At Stripe, we're building something more ambitious than a verification product. Our vision is to build the world's most trusted store of verified identities — a single, global, reusable, risk-scored representation of every individual who interacts with Stripe and beyond. This Identity Store becomes a platform with compounding network effects: more verifications enrich the store; a richer store produces better fraud signals; better signals mean lower friction for trusted users; lower friction drives more adoption. Our product today serves millions of verifications per month for customers like OpenAI, Shopify, and WhatNot, and powers identity verification across multiple internal Stripe products including Fraud, Link, Connect, and Crypto. The problems ahead — adversarial AI and deepfake defense, networked identity infrastructure, progressive verification platforms, and low friction KYC APIs — sit at the frontier of what's possible in identity engineering. This role is open to candidates based in our Seattle, New York, or San Francisco offices, or remote within the US. For Stripes who live within 35 miles of an office, we offer a hybrid work environment with an expectation of in-office presence 50% of your working days each month. WHAT YOU'LL DO As a Full Stack Staff Engineer on the Identity team, you will own the technical direction of one of Stripe's most strategically important product areas. This is not a role defined by task execution — it's a role defined by technical judgment, architectural influence, and the ability to turn an ambitious vision into a reliable, scalable system. RESPONSIBILITIES * Own technical strategy — Define the architecture for Identity's core systems (Identity Store, headless verification platform, fraud detection infrastructure), make build vs. buy vs. partner decisions, and surface technical risks before they become customer-facing failures * Lead 0-1 platform development — Architect net-new systems including the Identity Store, Networked Identity platform, and advanced fraud detection pipeline (behavioral biometrics, deepfake discriminators, adversarial training). Drive the evolution from a hosted-UI product to a headless-API and embedded-components platform * Drive cross-functional alignment — Be the primary technical voice in roadmap and resourcing discussions. Partner with ML, product, legal, and engineering leads across Risk, Fraud, Link, Connect, and Crypto to ensure Identity's abstractions serve the full breadth of Stripe's product surface * Raise the technical bar — Set engineering standards across ML, backend, mobile, and front-end; lead design reviews; and mentor senior engineers on the judgment needed to operate a high-stakes, externally-facing product * Operate with ownership — Be accountable for reliability, scalability, and security of the systems you design — including the observability and alerting that catch model drift and fraud pattern shifts before customers do WHO YOU ARE We're looking for someone who meets the minimum requirements to be considered for the role. If you meet these requirements, you are encouraged to apply. The preferred qualifications are a bonus, not a requirement. MINIMUM REQUIREMENTS * 10+ years of software engineering experience, including 5+ years of experience in a strategic technical leadership role * Experience leading engineering team(s) working on API design, abstractions, frameworks, or client libraries (e.g. building internal or external developer products) * Proven track record of delivering pragmatic solutions that accelerate business growth * Ability to adjust conversations from high-level discussions to detailed coding * Clear and persuasive writing and in-person communication PREFERRED QUALIFICATIONS * Experience with identity verification, fraud detection, or trust and safety systems — especially systems with adversarial inputs at scale * Familiarity with ML systems in production: model serving, training pipelines, observability, drift detection, and the feedback loops that keep models accurate under adversarial conditions * Experience building platform products with multiple consumer types — internal platform teams and external developers — where API backward compatibility and abstraction quality are first-class concerns * Prior experience with 0-1 product builds: you've started with a blank page and ended with a production system, and you have clear opinions about what makes that process go well or poorly * Experience across a range of software languages and frameworks; our stack includes primarily Ruby and TypeScript on the backend, Python for ML and data pipelines, with infrastructure spanning Kafka, Temporal, Protobuf, React, SQL (Spark and Trino dialects), Airflow, Bazel, Mongo, Splunk, and Prometheus * Experience navigating ambiguity in a fast-moving organization — you can make confident technical decisions with incomplete information and update gracefully when new constraints emerge

Brave

SENIOR SECURITY ENGINEER Remote ABOUT BRAVE Brave is on a mission to protect the human right to privacy online. We’ve built a free web browser that blocks creepy third-party ads and trackers by default, a private search engine with a truly independent index, a browser-native crypto wallet, and a private ad network (opt-in!) that directly rewards you for your attention. And we’re just getting started. Already 110+ million people have switched to Brave for a faster, more private web. Millions more switch every month. The internet is a sea of privacy-harmful ads, hackers, and echo chambers. Big Tech makes huge profits off our data, and tells us what’s true and what’s not. Brave is fighting back. Join us! SUMMARY We are hiring a staff engineer on the Brave security and privacy team! You will help keep our users safe across Brave’s products, including Brave browser and Brave Search. Responsibilities include: 1. Security reviews of Brave products 2. Triaging and fixing security reports 3. Designing and implementing security-relevant code 4. Penetration tests of Brave products and infrastructure Brave is widely-recognized as one of the best browsers for security and privacy, doing industry-leading work with a team that’s a fraction of the size of Big Tech-supported browsers. REQUIRED QUALIFICATIONS * At least 5 years experience (or equivalent) in security engineering * Experience in penetration testing and/or security auditing * Proficiency in C++, both implementing and reviewing * Strong familiarity with the Web security model * Experience securing AWS infrastructure * Very comfortable working and communicating async with a geographically-distributed software development team * Be comfortable diving into an extremely large, unfamiliar and complex codebase * Be comfortable with Git and collaborating on GitHub PREFERRED QUALIFICATIONS * Experience contributing to large open source codebases and/or participating in open source communities * Proficiency in Web technologies (HTML, CSS, JavaScript)  * Proficiency in Go and Rust * DevOps experience * Contributions to other Web browsers * Familiarity with Chromium's architecture, especially security * Ability to write clear technical documentation and less technical writing for blog posts or public communication.  * Be excited about privacy, anonymity, and censorship resistance!

Adyen

This is Adyen Adyen provides payments, data, and financial products in a single solution for customers like Meta, Uber, H&M, and Microsoft - making us the financial technology platform of choice. At Adyen, everything we do is engineered for ambition.  For our teams, we create an environment with opportunities for our people to succeed, backed by the culture and support to ensure they are enabled to truly own their careers. We are motivated individuals who tackle unique technical challenges at scale and solve them as a team. Together, we deliver innovative and ethical solutions that help businesses achieve their ambitions faster. Staff Engineer - Customer Interfaces As a Staff Engineer for Customer Interfaces (CI), you will lead the evolution of the Adyen experience from a traditional dashboard into an intelligent, conversational financial partner. We are looking for a product engineer who can wear an architectural hat to build Agentic Workflows and manage backend orchestration (specifically Tool-use, Chains, and Policy Layers). This role is essential for transforming natural language inputs into authenticated, secure financial operations. What you'll do * Drive Intelligent Experiences: Lead the next generation of conversational UIs at Adyen. You will build Generative UIs that adapt in real-time, moving beyond static dashboards to create streaming, multi-modal experiences where the interface itself is a dynamic partner in the conversation. * Bridge Architecture & Innovation: Act as the primary technical liaison for AI initiatives, coordinating their integration and ensuring operational excellence with teams in different areas and global geographies. You will ensure that "intelligent modules" built in are the gold standard for performance and extensibility. * Zero-Trust for AI: Architect the security layer for conversational interfaces. You will solve the unique challenge of maintaining strict financial data privacy and "Zero Trust" principles while leveraging LLMs and advanced data processing. * Product Strategy & "The Art of the Possible": Partner deeply with the Head of Product to identify high-impact flows. You aren't just implementing designs; you are identifying where intelligent automation can solve "impossible" merchant problems. * Full-Stack Leadership: Own the end-to-end technical lifecycle. From backend services and data pipelines that feed our insights, to the frontend components that render them. * Global Influence: Mentor engineers and coordinate with global hubs to drive technical standards that benefit the entire Adyen ecosystem. WHO YOU ARE * Product-Minded Architect: You think in terms of user outcomes. You have a track record of partnering with product teams to turn ambiguous goals into robust technical reality. * Applied AI Experience: You have experience (or a deep technical interest) in building production-grade interfaces powered by LLMs, including harnesses, policy enforcement, evals, RAG architectures and secure data handling. * Full-Stack Powerhouse: Deeply proficient in Java for secure backend services and TypeScript/React/Vue for complex front-end applications. * Security First: You have a "security-by-design" mindset, particularly regarding the handling of sensitive financial data in modern web environments. * Entrepreneurial & Autonomous: You will be a core member of our growing San Francisco team, where you will be expected to operate with speed and autonomy. Success in this role requires you to effectively navigate and collaborate with a large, global organization. This role's annual base salary range is $258–$367k, plus RSUs. To learn more about our compensation philosophy, please click here. Our Diversity, Equity and Inclusion commitments  Our unique approach is a product of our diverse perspectives. This diversity of backgrounds and cultures is essential in helping us maintain our momentum. Our business and technical challenges are unique, and we need as many different voices as possible to join us in solving them - voices like yours. No matter who you are or where you’re from, we welcome you to be your true self at Adyen.  Studies show that women and members of underrepresented communities apply for jobs only if they meet 100% of the qualifications. Does this sound like you? If so, Adyen encourages you to reconsider and apply. We look forward to your application! What’s next? Ensuring a smooth and enjoyable candidate experience is critical for us. We aim to get back to you regarding your application within 5 business days. Our interview process tends to take about 4 weeks to complete, but may fluctuate depending on the role. Learn more about our hiring process here. Don’t be afraid to let us know if you need more flexibility. Adyen is an equal opportunity employer. We do not discriminate based on race, color, ethnicity, ancestry, national origin, religion, sex, gender, gender identity, gender expression, sexual orientation, age, disability, veteran status, genetic information, marital status or any legally protected status. All your information will be kept confidential according to EEO guidelines. You must be work authorized in the United States without the need for new visa sponsorship. The company can support visa transfers but will not sponsor individuals for H-1B CAP applications. SAN FRANCISCO  Pursuant to the San Francisco Fair Chance Ordinance, we will consider for employment qualified applicants with arrest and conviction records. This role is based out of our San Francisco office. We are an office-first company and value in-person collaboration; we do not offer remote only roles