Senior Security Engineer

We are seeking a highly skilled Senior Security Engineer to join our innovative team at Decagon in San Francisco. In this pivotal role, you will be responsible for safeguarding our digital infrastructure and ensuring the security of our systems against potential threats. You will work closely with cross-functional teams to design and implement security solut…

We are seeking a visionary Director of Engineering & Operations to lead our engineering team and oversee operational excellence at actionlife. In this pivotal role, you will drive innovative solutions, optimize processes, and ensure the highest standards of quality and efficiency.Your leadership will shape the future of our technology initiatives and operational strategies, making a significant impact on our growth and success.

About Stitch Fix, Inc. Stitch Fix (NASDAQ: SFIX) is an online personal styling service that helps people discover clothing and styles that fit their preferences. The company blends expert human stylists with advanced AI and recommendation systems to curate selections from both exclusive and national brands. Founded in 2011 and based in San Francisco, Stitch Fix aims to make finding the right look easier for everyone, eliminating the need for endless browsing or shopping. Engineering at Stitch Fix The engineering group brings together professionals from a range of backgrounds, including those who have contributed to well-known organizations. The team applies practices such as Test-Driven Development (TDD), continuous delivery, DevOps, and service-oriented architecture. Collaboration across functions is central, building trust among stakeholders and focusing on products that solve real problems and create lasting value. Sometimes, the best solutions come from rethinking the problem rather than writing new code. Role Overview: Engineering Manager - Fulfillment Stitch Fix is seeking an experienced Engineering Manager to lead the Fulfillment team. This leader will guide engineers working on systems that support order management, inventory, warehouse operations, and transportation. The role centers on developing, supporting, and optimizing solutions that make fulfillment more efficient and improve the customer experience. Success in this position requires technical expertise, strong team leadership, and the ability to think strategically. Key responsibilities include: Overseeing the development and support of Order Management Systems (OMS), Inventory Management, Warehouse Management Systems (WMS), and Transportation Management Systems (TMS) Collaborating closely with teams in operations, product, and algorithms to design and implement scalable systems Driving improvements that streamline fulfillment operations and deliver measurable business results The Fulfillment engineering team works remotely across four time zones. Building strong relationships and encouraging learning are core values. Stitch Fix supports personal growth and development within a culture built on trust. Location This role is remote within the United States.

Role Overview Juul Labs, Inc. is seeking a Senior Mechatronics Engineer in San Francisco, California. This position focuses on designing and developing advanced mechatronic systems for the company’s products. The role involves close collaboration with teams across different disciplines to improve product performance and reliability.

Earnest builds borrowing solutions that help people take control of their financial futures. The Analytics Engineer II role supports this mission by improving how data is modeled, organized, and delivered across the company. Role overview This position reports to the Senior Manager of Data Platforms and Analytics Engineering. The Analytics Engineer II works closely with Product, Risk, and Analytics teams to ensure data is accessible, reliable, and structured for confident decision-making. What you will do Design and refine data models to support faster and more dependable decisions across multiple business teams. Remove data bottlenecks by providing clean, scalable datasets that analysts can use independently. Support both planned projects and urgent requests, helping business teams operate smoothly. Improve data quality and organization to enable effective analysis and the launch of new products or features. Requirements At least 3 years of experience in analytics engineering, data engineering, or a related field. Strong SQL skills and experience building data models that align with business needs. Familiarity with dbt and modern data warehouse solutions such as Snowflake or Redshift. Ability to collaborate across teams and translate complex data into actionable insights. Curious, proactive, and motivated to solve problems beyond assigned tasks. Preferred qualifications Experience with orchestration tools like Airflow or similar platforms. Background in fintech, product analytics, or high-growth companies. Location This is a remote role based in the United States. Earnest's headquarters are in San Francisco, CA.

airapps is hiring a Mobile DevOps Engineer in San Francisco. This role centers on improving how mobile applications are built, tested, and delivered. Role overview The Mobile DevOps Engineer will focus on refining and maintaining development and deployment workflows for mobile apps. Working alongside teams from different disciplines, this position supports continuous integration and continuous delivery (CI/CD) pipelines to keep releases running smoothly and efficiently. What you will do Streamline mobile application development and deployment processes Collaborate with cross-functional teams to improve automation Enhance and maintain CI/CD pipelines for mobile projects Requirements Experience with mobile application DevOps practices Interest in automation and workflow optimization Ability to work closely with diverse technical teams

Future builds digital personal training experiences that connect people with expert coaches through a seamless app. Since 2017, the company has grown from an idea in a San Francisco café to the largest provider of personal training sessions in the US. In January 2025, Future merged with Autograph, founded by Tom Brady, and is expanding its reach through new partnerships and AI-driven coaching tools. Future continues to invest in technology, grow its coaching roster, and form partnerships with leading athletes. The team is focused on shaping the future of fitness by making expert coaching accessible to more people. Role overview This remote Cloud Infrastructure Engineer position centers on designing, building, and maintaining the cloud platform that underpins Future’s products. The role is hands-on and impacts daily operations for engineering teams, focusing on reliability, security, and efficiency. What you will do Develop and maintain infrastructure-as-code best practices using AWS CDK, keeping cloud resources version-controlled, repeatable, and peer-reviewed. Design and manage AWS infrastructure components, such as ECS, RDS Aurora, API Gateway, S3, and networking, with attention to reliability, performance, and cost efficiency. Build and support an observability stack, including structured logging, distributed tracing, and monitoring, to provide insights into system performance. Requirements Strong experience with AWS and a focus on building resilient, automated systems. Commitment to operational excellence, security, and cost efficiency. Emphasis on enabling engineering teams to deliver work quickly and confidently.

Sofi is hiring a Software Engineer, Cloud to help build and support cloud-based solutions for a diverse and expanding customer base. This position plays a key part in shaping the technology that powers Sofi’s financial products. Role overview This role centers on designing, developing, and maintaining systems in the cloud. The Software Engineer will work closely with colleagues from different teams to introduce new technologies and refine existing systems. What you will do Create and maintain cloud-based applications and services. Work with cross-functional teams to implement new features and improve performance. Contribute to projects that enhance the overall user experience. Impact Work in this role supports Sofi’s mission to make financial tools accessible to everyone. Contributions directly affect how customers interact with and benefit from Sofi’s offerings.

Join DoorDash as the Director of Engineering for Logistics, where you will lead our engineering team in revolutionizing the logistics process. You will be responsible for developing innovative solutions, improving operational efficiency, and ensuring customer satisfaction. Your expertise will guide the engineering team to design and implement scalable systems that drive our logistics operations forward.

About Stitch Fix, Inc. At Stitch Fix (NASDAQ: SFIX), we're transforming the way people shop for clothing. As the premier online personal styling service, we help clients uncover styles that fit them perfectly, ensuring they always look and feel their best. Our unique approach combines expert stylists with advanced AI and recommendation algorithms, offering a curated selection of exclusive and national brands tailored to individual tastes. Founded in 2011 and headquartered in San Francisco, we streamline the shopping experience, allowing clients to express their personal style without the hassle of traditional shopping. About the TeamThe Platform Engineering team is dedicated to developing and maintaining the tools that empower our Application and Service Developers at Stitch Fix. We prioritize creating low-friction tools and practices that enhance developer happiness, as we believe that satisfied developers produce superior code. Our practices include Infrastructure-as-Code, Immutable Infrastructure, and the use of Containers, alongside leveraging AWS and various Cloud SaaS solutions.About the RoleAs a Platform Engineer, you will play a vital role in building and enhancing Stitch Fix's cloud-native infrastructure and internal developer tools. Your focus will be on developing tools and automations that simplify the deployment, operation, and debugging of services, while you gain exposure to modern platform engineering practices alongside seasoned professionals. This position is ideal for engineers passionate about enhancing developer experience and eager to expand their expertise in cloud infrastructure and CI/CD systems.You'll be excited about this opportunity because you will…Contribute to the design and evolution of our internal platform-as-a-service utilized by application and service developers.Develop and uphold tools that enhance developer workflows, improve deployment reliability, and boost daily productivity.Work collaboratively with platform and application engineers to pinpoint friction points and apply incremental improvements.Learn and implement best practices surrounding Infrastructure-as-Code, containerized workloads, and CI/CD pipelines.Utilize or be eager to adopt AI-assisted development tools to increase productivity, and assist in exploring and integrating LLM-powered solutions for automating internal support and operational tasks.

BKF Engineers is a distinguished multi-service infrastructure consulting firm that has been at the forefront of civil engineering and surveying across California, the Pacific Northwest, and beyond for over 110 years. With strategically located offices throughout California and the Portland area, we deliver exceptional service to transportation, water resources, land development, government, and federal clients.Join BKF Engineers to embark on a career path filled with intention and purpose. Our company culture fosters professional autonomy, innovation, and meaningful collaboration among our teams. We are proud to have been recognized with the Great Place to Work certification for two consecutive years.We are currently seeking a Design Engineer with a few years of experience in civil infrastructure design to join our dynamic onsite team in the California Bay Area. In this role, you will play a vital part in Land Development projects, collaborating with experienced engineers to develop designs utilizing standard methodologies and sound judgment. You will engage in a range of projects from conceptualization through construction documentation, gaining practical experience and advancing your skills within a supportive environment. Proficiency in AutoCAD/Civil 3D and a California E.I.T. certification are advantageous, alongside a proactive approach and a strong desire to learn.

At Crusoe, we are on a mission to accelerate the availability of energy and intelligence. We are building the foundational technology that empowers individuals to innovate boldly with AI while maintaining speed, scale, and sustainability.Join us in the AI revolution with sustainable technology at Crusoe, where you will lead significant innovations, make a real impact, and collaborate with a team that is pioneering responsible and transformative cloud infrastructure.About the Role:We are seeking a highly proficient engineer with extensive experience in designing and managing observability platforms at scale. You will be responsible for architecting, developing, and operating Crusoe’s next-generation observability stack, which will allow engineers to gain insights into the internal state of distributed systems through metrics, logs, and traces. Your contributions will guarantee reliability, performance, and actionable insights across Crusoe’s global infrastructure and cloud platform.Key Responsibilities:Design and manage scalable observability systems (metrics, logging, tracing) in multi-datacenter Kubernetes environments.Architect comprehensive telemetry pipelines, covering ingestion, storage, querying, and visualization.Enhance monitoring and alerting mechanisms with Prometheus, Alertmanager, Thanos/Cortex, Grafana, and OpenTelemetry.Develop scalable log collection and processing pipelines utilizing Fluent Bit, Vector, Loki, or ELK/Opensearch stacks.Implement distributed tracing platforms (Tempo, Jaeger, OpenTelemetry) and integrate with service meshes, load balancers, and APIs.Establish and promote the adoption of SLOs, SLIs, and error budgets across various services and teams.Automate the provisioning and scaling of observability infrastructure using Kubernetes, Terraform, and custom tools (Go, Python).Ensure the reliability and cost-effectiveness of telemetry pipelines while supporting high-volume workloads (AI/ML, HPC clusters, GPU infrastructure).Integrate security best practices into observability platforms, including RBAC, TLS, secret management, and multi-tenant access controls.Collaborate with engineering teams to embed observability into applications, services, and infrastructure.Mentor engineers and influence Crusoe’s observability strategy and technical roadmap.

Who We AreSamsara (NYSE: IOT) is at the forefront of the Connected Operations™ Cloud, a transformative platform that empowers businesses reliant on physical operations to tap into Internet of Things (IoT) data. Our aim is to provide actionable insights that enhance safety, efficiency, and sustainability across vital industries such as agriculture, construction, transportation, and manufacturing. By digitally transforming these sectors, which represent over 40% of global GDP, we are contributing to a more efficient and sustainable economy.Joining Samsara means being part of a team that is defining the future of physical operations. You will engage in cutting-edge solutions, including Video-Based Safety, Vehicle Telematics, and Equipment Monitoring, within a supportive environment that fosters innovation and long-term impact.About the Role:We are seeking a Senior Hardware Systems Engineer to enhance our rapidly expanding product line. Your primary responsibility will involve leading the electrical engineering components of product architecture and design, grounded in comprehensive feasibility, design, and cost analyses. This encompasses critical aspects such as component selection, thermal management, and antenna design. You will leverage extensive telemetry and direct customer insights to inform and refine our product designs. Collaborating closely with Product Management, Firmware, and Hardware leadership, you will influence key engineering decisions while mentoring fellow engineers. The role will also require interaction with our US and Taiwan EE teams, as well as our Supply Chain and laboratory resources, to achieve our project goals effectively.This role is hybrid, requiring you to be in our San Francisco, CA office three days a week, with the flexibility to work remotely for two days. Travel may be necessary up to 25% of the time, and proximity to an international airport is essential. We offer relocation assistance for this position and welcome candidates from across the U.S. who are willing to relocate to the Bay Area.

Join Our Innovative Team at Atomic SemiAt Atomic Semi, we are pioneering the future of semiconductor manufacturing with our state-of-the-art, compact fabrication facilities.Our approach leverages current technologies and innovative simplifications, enabling us to create our own tools for rapid iteration and enhancement.We are assembling a select group of exceptional engineers—mechanical, electrical, hardware, computer, and process specialists—who will take ownership of the entire stack from atomic structures to architectural designs. Our optimistic team is dedicated to advancing technology boundaries.We believe that smaller, faster, and self-built solutions are the key to success.Our facility is equipped with 3D printers, a variety of microscopes, e-beam writers, and general fabrication equipment. If there’s something we need, we’ll innovate to create it.Founded by Sam Zeloof and Jim Keller, our team combines practical chip-making experience with decades of industry leadership.Role OverviewAs an Electronic Hardware Design Engineer, you will collaborate with a talented team to design cutting-edge lithography systems, deposition tools, vacuum chambers, and high-precision motion control systems. You will tackle challenges, prototype innovative solutions, and bring your designs to production, contributing to transformative advancements in integrated circuit manufacturing.Your projects may involve high-voltage low-noise converters, motor drivers, attofarad sensors, and millikelvin temperature controllers—all in a single initiative.

Join Crusoe as a Staff Network Deployment Engineer in our Lab division. In this pivotal role, you will spearhead the deployment and optimization of our cutting-edge networking technologies. Your expertise will be crucial in ensuring that our systems are robust, efficient, and ready to meet the demands of our innovative projects.

Airbnb, founded in 2007, has transformed the travel experience by connecting over 5 million hosts with more than 2 billion guests worldwide. Our platform enables unique stays and authentic community experiences for travelers around the globe.Join Our Community:At Airbnb, the Developer Infrastructure team is dedicated to empowering engineers and AI Coding Agents to produce high-quality software efficiently. We focus on infrastructure that enhances engineering productivity throughout the software development lifecycle, including build, test, and deployment.Your Impact:As a member of the CI+Build team, you will play a crucial role in optimizing our developer infrastructure, which encompasses remote build systems, CI clusters, flaky test management, and merge queues. Your contributions will help maintain a seamless mainline and accelerate pull request cycle times.In this role, you will define and implement cutting-edge build systems at Airbnb’s scale, guiding the technical direction for build infrastructure across diverse platform teams. You will collaborate with internal teams that deliver systems utilized by product engineers in backend, web, and mobile environments. Success in this position requires a deep understanding of the architecture of our largest internal backend services as we navigate an increasingly complex build graph.A Day in Your Role:Designing enhancements to our existing Bazel installation and remote build/cache infrastructure to boost correctness, reproducibility, and speed.Establishing the technical roadmap for the reliability and performance of our software build systems.Improving inner-loop development velocity and CI run-times through diagnostic efforts.

Join KPFF Consulting Engineers as a Civil Engineering Project Manager and lead exciting infrastructure projects in the heart of San Francisco! In this role, you will oversee project planning, execution, and delivery while collaborating with a talented team of engineers and architects.Your responsibilities will include managing project schedules, budgets, and resources, ensuring compliance with regulatory requirements, and maintaining strong client relationships. This is a unique opportunity to contribute to innovative projects that shape urban environments.

Join Matter Intelligence as a Data and Machine Learning Infrastructure Engineer, where you will play a pivotal role in shaping the future of data-driven decision-making. You will be part of a dynamic team focused on building and optimizing infrastructure that supports innovative machine learning applications. Your expertise will help us enhance our data pipelines and ensure seamless integration of machine learning models into production.

Join Syska Hennessy Group and see your engineering expertise contribute to iconic projects worldwide! As a premier consulting, engineering, and commissioning firm, we excel in MEP, information and communication technology, architectural lighting, vertical transportation, and commissioning services.Our vibrant workplace fosters innovation and growth, making it an ideal place to advance your engineering career. Enjoy a supportive culture, a diverse team, competitive compensation, and a flexible work schedule—Monday to Thursday in the office for 9 hours, and Fridays working 4 hours remotely. Our social events add to the excitement of a fulfilling and challenging career. We are seeking an Electrical Engineer III - IV for our San Francisco, CA or Sacramento, CA offices.

About Flow EngineeringFlow Engineering is a pioneering AI-native requirements platform tailored for contemporary engineering organizations. Our innovative technology empowers hardware teams to engage collaboratively with AI agents, facilitating the design, validation, and evolution of complex systems with unparalleled speed and precision.About the RoleWe are on the lookout for skilled staff software engineers with a focus on AI who are passionate about developing AI-infused capabilities. Your work will enhance how teams draft, review, and manage requirements efficiently. You will be integral to workflows involving agentic systems engineers and domain engineers, effectively placing AI at the core of team interactions and decision-making processes.This position merges AI, product development, and full-stack engineering, enabling you to advance concepts from initial prototypes to robust, observable features in a production environment.Key ResponsibilitiesDesign and implement AI-enhanced functionalities such as assisted requirement drafting, consistency checks, impact assessments, and intelligent recommendations for systems and domain engineers.Create agentic workflows that empower systems engineers and domain engineers to explore designs, simulate modifications, and validate requirements effectively.Assess and incorporate language models and related tools, optimizing for reliability, latency, cost-effectiveness, and debuggability in production settings.Develop and sustain the complementary infrastructure, including data pipelines, evaluation frameworks, prompt and model management, observability, as well as safety measures and guardrails.Engage across the technology stack, from backend integrations and API development to user interface components, delivering comprehensive AI capabilities beyond mere model endpoints.Collaborate with product teams and clients to pinpoint high-impact workflows, conduct experiments, and iterate swiftly based on user feedback.QualificationsA minimum of 3 years of experience in applied machine learning, large language models (LLMs), or related domains, with a proven history of deploying ML/LLM-driven features in live environments.At least 8 years of experience in software development, including the design, testing, and operation of scalable services in a cloud-based infrastructure.Proficiency with contemporary LLM providers and tools (e.g., OpenAI, Anthropic, Hugging Face, vector databases, retrieval-augmented generation patterns).Familiarity with prompt crafting, retrieval-augmented systems, evaluation techniques, and safety protocols.Strong analytical skills to evaluate trade-offs among various models, architectures, and deployment strategies, enabling pragmatic decision-making.An openness to continuous learning and adapting to evolving technologies.