Backend Platform Engineer at Rox Data Corp | San Francisco

About RoxAt Rox, we are dedicated to empowering individuals to excel in their work.Our innovative platform enhances seller performance with autonomous revenue agents that handle manual tasks, allowing sales professionals to concentrate on their primary role: selling. Just as coding agents exponentially increased engineering productivity, our revenue agents e…

Role Overview Amplitude is hiring a Staff Security Engineer in San Francisco, CA. This role focuses on strengthening security across the company’s systems and safeguarding user data. The position involves both hands-on technical work and collaboration with teams throughout the organization. What You Will Do Design and implement security controls and processes Conduct vulnerability assessments to identify and address risks Work closely with engineering and other teams to embed security best practices into the development lifecycle

About DEUNA DEUNA is an innovative startup transforming the landscape of global commerce with our groundbreaking AI-driven orchestration and payments platform, ATHIA. Our solution empowers large enterprises to enhance approval rates, minimize costs, and discover new revenue streams. Developed by a team recognized as the fastest-growing Commerce OS in Latin America, ATHIA integrates payment intelligence, checkout optimization, and data orchestration into a unified solution.With robust integrations across over 300 payment service providers and alternative payment methods, and with more than 20% of Mexico’s digital economy processed through our platform, we simplify global payment processes via a single integration and centralized reconciliation.As we expand into the U.S. market to fulfill the pressing requirements of large retailers, marketplaces, airlines, and quick-service restaurants (QSRs), we invite you to join us in shaping the future of payments! Role OverviewWe are on the lookout for a Backend Staff Engineer who will serve as a technical expert and architectural leader for our backend systems. This position focuses on tackling complex engineering challenges, scaling distributed systems, and establishing backend engineering standards across the organization.This is not a management role; instead, you will act as a technical authority, collaborating with Engineering Managers while taking charge of technical depth and backend architecture decisions. You will thrive in a dynamic startup environment where backend systems are critical to product capabilities.Key ResponsibilitiesBackend Architecture & System Design- Create and enhance scalable, secure, and resilient backend systems.- Architect high-availability APIs and distributed services.- Establish best practices for reliability, observability, and performance.Deep Technical Contribution- Write high-quality, production-ready backend code.- Lead refactoring initiatives and performance enhancements.- Identify system bottlenecks and implement scalable solutions.- Design data models, caching strategies, and asynchronous workflows.Technical Influence- Provide technical guidance across teams.- Facilitate complex design discussions and evaluate trade-offs.- Enhance backend development standards and documentation practices.Scalability & Reliability- Design systems capable of managing high-traffic and transaction-intensive workloads.- Define strategies for load balancing, scaling, monitoring, and failure management.- Optimize system instrumentation and monitoring practices.

P-1398 Note: This is a hybrid role requiring approximately 3 days in the office in Plano, TX. Mission: As a Staff Data & AI Technical Solutions Engineer, you will take the lead in developing and guiding others in crafting innovative Data & AI technical solutions for various customer issues. This includes an in-depth exploration of production data pipelines, AI workflows, streaming data ingestion, and more. You possess extensive expertise in Data & AI architectures, having encountered a diverse array of use cases while successfully managing intricate production environments in compliance with Service Level Agreements (SLAs). You will work collaboratively with product engineering and customer account teams to deliver exceptional results for customers, especially in critical production downtime scenarios. Your role is to empower customers with the knowledge and skills necessary to create efficient architectures and dependable services, leveraging Databricks’ platform to achieve their strategic goals. Reporting to a Technical Support Engineering manager, you are recognized as a technical authority within a leading global support engineering organization, celebrated for your leadership, technical knowledge, and ability to resolve even the most challenging customer situations. The impact you will have: Lead and direct technical solutions for a wide range of complex challenges reported by Databricks customers, including escalated and critical cases. Conduct comprehensive code-level analysis and systems architecture assessments of customer workloads to resolve issues related to Databricks products, including Spark core internals, Spark SQL, Delta, DLT, and Model Serving. Act as a customer support advisor, adept at diffusing escalations during incidents directly with customer stakeholders, swiftly identifying mitigations and solutions for advanced use cases, and strategically helping to avert future customer issues. Contribute to simplifying Databricks products and enhancing customer production environments' stability by influencing Engineering and Backline Support teams to identify areas for product improvements. Establish yourself as a deep technical expert and leader in the Databricks platform and production systems, mentoring others to share your expertise. What we look for: A minimum of 8 years of experience in designing, building, testing, and maintaining data pipelines, with relevant past experience in Spark being mandatory. Proficiency in SQL databases or data warehouses, among other technical skills.

Are you ready to take a leap into innovation?Join a team of expert engineers who have collectively contributed over $10 billion in value.Be present in our San Francisco office three days a week, collaborating closely with your peers.Flourish in a dynamic environment where adaptability is key.Adopt a product-driven and customer-centric mindset.Engage with cutting-edge technologies including LLMs, MCPs, Cloud Infrastructures, and Observability tools.Bring over five years of professional experience or open-source contributions to the table.Bonus points if you've previously thrived in a startup environment.About TierZeroAt TierZero, we are transforming the landscape of software engineering with AI. Our mission is to enhance the speed at which engineering teams build and deploy code, addressing the bottlenecks that slow down production. With $7 million raised from esteemed investors like Accel and SV Angel, our solutions are trusted by leading companies such as Discord, Drata, and Framer to optimize their high-scale systems and infrastructure for the AI-driven future.Your RoleAs a founding member, you will play a pivotal role in creating and developing our core products and systems. Collaborating closely with our CEO, CTO, and our valued customers, you will be engaged in a variety of tasks, including:Designing and implementing intelligent AI systems capable of reasoning over vast amounts of unstructured data.Deploying full-stack features based on direct user feedback.Enhancing the product experience to ensure that our AI agents are not only intelligent but also reliable and user-friendly for engineers.Building systems that automatically assess LLM outputs, enhancing reasoning through self-play and feedback loops.Developing machine learning pipelines for data ingestion, feature generation, embedding storage, RAG pipelines, vector search infrastructure, and graph databases.Experimenting with open-source and frontier LLMs to assess various trade-offs.Creating scalable infrastructure to support long-running, multi-step agents, including memory, state management, and asynchronous workflows.

About the Role Reflection AI is hiring a Member of Technical Staff focused on Infrastructure Security in San Francisco. This position plays a key part in protecting the company’s infrastructure from security threats. What You Will Do Work with teams across the company to design, implement, and monitor security protocols and systems Help safeguard digital assets by maintaining the integrity and security of infrastructure

Join Chime as an Engineering Manager for our Data Platform team, where you will lead a talented group of engineers in building innovative data solutions. Your leadership will drive the development of scalable and reliable data infrastructure that supports our mission to help our members achieve financial peace of mind. If you have a passion for data and a track record of delivering impactful projects, we want to hear from you!

Employee Applicant Privacy NoticeAbout Us:Join us in shaping a brighter financial future. At SoFi, we are revolutionizing the personal finance experience for our millions of members through innovative mobile technology.As a next-generation financial services company and national bank, we pride ourselves on being at the forefront of an unprecedented transformation in the industry. Our core values guide our efforts every day, driving meaningful changes that impact people's lives. Invest in yourself, your career, and the financial world with us.SoFi is on the lookout for a seasoned and driven Senior Staff Data Engineer to lead our Data Engineering group within the SoFi Data Platform (SDP) division. The SDP's mission is to harness data across SoFi, enabling the development of personalized and engaging experiences for our members.The Role:In this position, you will have the chance to significantly influence and steer the architecture of our next-generation AI-powered SoFi Data Platform (SDP). You will enhance data reliability through AI-driven workflows, tools, and practices. You will be responsible for leading, defining, and tackling complex problems in a fast-paced, collaborative environment. The ideal candidate will be a mentor and technical leader who is hands-on, with a strong sense of ownership and a commitment to delivering results.

About CogentCogent is a leading Applied AI Lab focused on crafting the next generation of AI agents specifically for cybersecurity. The landscape of cyber threats has drastically evolved, enabling malicious actors to operate with unprecedented efficiency and scale. Our dedicated 'AI Taskforce' analyzes vast amounts of enterprise data to proactively address these challenges and prevent critical security breaches.To maintain our position at the forefront of technology, we seamlessly integrate cutting-edge research with practical execution. In addition to our primary product initiatives, Cogent Research functions as our applied AI lab, delivering the research capabilities necessary to realize truly agentic security workflows.Since emerging from stealth mode, Cogent has witnessed swift expansion, collaborating with Fortune 500 companies to secure some of the most intricate production environments globally.Supported by Greylock, we have assembled a team of exceptional talent in applied AI, including individuals from:Prestigious universities such as Stanford, Berkeley, Penn, Duke, Carnegie Mellon, and WaterlooProminent high-growth companies including Scale AI, Databricks, Stripe, Tesla, and CoinbaseLeading cybersecurity experts from Wiz, Abnormal AI, and ZscalerRenowned research institutions like DeepMind and SAILAbout the RoleAs a Business Operations Associate, you will act as a versatile generalist, closely collaborating with company leadership to tackle the most pressing challenges the business faces at any given moment.This role is characterized by its dynamic nature and high ownership. One quarter, you may focus on operational assessments, while the next might involve talent initiatives or enhancing Cogent’s external visibility. The common thread is that you will engage with whatever is crucial for advancing the company's mission.This position provides a rare opportunity to gain insight into the formation of a category-defining organization, making it an excellent match for individuals passionate about company-building and long-term leadership development.Your ResponsibilitiesCollaborate with founders and company executives to spearhead high-priority strategic and operational projectsPerform operational evaluations across the organization to uncover gaps, inefficiencies, and potential improvementsSupport the talent function through hiring strategies, process enhancements, and special projects in recruiting or people operations

Join Our Team as a Revenue Operations SpecialistAbout Cogent SecurityAt Cogent Security, we are at the forefront of transforming vulnerability management through our AI-native platform, which empowers security teams to focus on what truly matters. Supported by leading investors, we are rapidly expanding and are establishing a powerful go-to-market strategy that aligns with our growth ambitions.About the RoleAs an innovative early-stage AI startup, Cogent has developed a unique go-to-market (GTM) approach in the cybersecurity landscape. Our growth function is powered by an in-house AI operating system, featuring a comprehensive data layer and a multi-agent platform that facilitates revenue marketing, sales operations, field logistics, and pipeline management. In this role, you will be part of a dynamic team that is redefining how a security company engages with the market.As a Revenue Operations (RevOps) Specialist, you will serve as the analytical backbone of our GTM team. Your insights will guide our decisions based on data, examining how the sales funnel converts at each stage, by source, and by sales representative over specific time frames. You will diagnose bottlenecks in the funnel, redesign processes to enhance performance, and collaborate with sales leadership to ensure successful execution. With existing dashboards and agents in place, we are seeking someone capable of interpreting data and driving actionable outcomes.This position is ideal for candidates with a background in investment banking, consulting, or strategy who have transitioned into a technology-focused GTM role. While cybersecurity knowledge is not mandatory, advanced analytical skills are essential, as data-driven decision-making is the core of our operations. My own experience includes crafting quantitative GTM strategies at previous organizations that have led to significant growth, and I am looking for someone who shares this analytical perspective.Key ResponsibilitiesAct as the right hand to the Head of Growth, participating in operating meetings such as pod calls, forecast calls, and pipeline reviews. Identify areas requiring action and facilitate resolution.Ensure pipeline integrity by establishing criteria for opportunity creation versus target account identification, designing staging protocols, and maintaining reliable pipeline data.Conduct thorough conversion analysis throughout the sales funnel, pinpointing where deals stall and collaborating with sales leadership to enhance conversion rates.Manage target account lists for each sales representative by territory, transforming the ideal customer profile into actionable targeting strategies.Perform weekly closed-loss and disqualification analyses, identifying potential opportunities for reactivation as product or market conditions evolve.

About tierzero tierzero helps engineering teams build and deploy code with greater speed and operational clarity in an AI-driven world. The company focuses on improving incident response, operational visibility, and knowledge sharing for engineers. Backed by $7 million in funding from investors like Accel and SV Angel, tierzero supports large-scale systems for clients such as Discord, Drata, and Framer. Role Overview: Founding Member of Technical Staff This role is based at tierzero's San Francisco headquarters. In-person work is required three days a week. As a founding member of the technical team, you will help design and build core products and systems from the ground up. Collaboration is central: expect to work closely with the CEO, CTO, and customers. Projects span a wide range of technical challenges and product areas. What You Will Do Design and implement intelligent AI systems that process and reason over large volumes of unstructured data. Develop full-stack features, incorporating direct feedback from users. Improve the product experience so intelligent agents are practical and reliable for engineers. Create systems that automatically evaluate LLM outputs and refine agent reasoning using self-play and feedback loops. Build machine learning pipelines covering data ingestion, feature generation, embedding stores, RAG pipelines, vector search, and graph databases. Prototype and experiment with open-source and advanced LLMs to weigh different approaches. Set up scalable infrastructure for long-running, multi-step agents, including memory management, state handling, and asynchronous workflows. What We Look For At least 5 years of professional or open-source experience in a relevant technical field. Comfort working in a setting that changes and evolves quickly. Strong product focus and an understanding of customer needs. Interest in LLMs, MCPs, cloud infrastructure, and observability tools. Ability to learn from and collaborate with engineers who have delivered over $10 billion in value. Commitment to working onsite in San Francisco three days per week. Startup experience is a plus.

About the PositionAt Wafer, we are on a mission to enhance the intelligence per watt by developing AI systems that can self-optimize. Our journey begins with GPU kernels, and we aim to revolutionize every aspect of ML systems and AI infrastructure. We are a compact, dynamic team of four, supported by renowned investors including Fifty Years, Y Combinator, Jeff Dean, and Woj Zaremba, co-founder of OpenAI. We are seeking passionate engineers eager to innovate at the convergence of AI agents and systems programming.In this role, you will collaborate closely with our founding team to create the systems that power our GPU optimization platform. Your projects will range from the agent framework that refines kernels to the profiling infrastructure that interfaces with NCU and ROCprofiler, as well as the compiler tools that scrutinize PTX and SASS.

At Forge, we recognize that our team is our most valuable asset. As pioneers in the private market technology sector, we aim to create a brighter future for all. This vision is embodied in our core values of boldness, accountability, and humility. We witness the impact of our vision daily, supporting the teams behind the most remarkable innovations of our era, from space exploration to artificial intelligence, and beyond.With our liquidity solutions, exclusive insights, custody offerings, and a dynamic marketplace, Forge strives to establish a leading-edge technology infrastructure that empowers a transparent, accessible, and seamless global private market for companies, their employees, and investors. Through Forge, employees can liquidate their private shares, employers can reward shareholders with pre-IPO liquidity, and both individual and institutional investors can engage with the growth of private unicorns.Forge's unique global marketplace meets the increasing demand from individual and institutional investors seeking exposure to private company stocks, creating a significant network effect.Our ability to provide these impactful financial solutions has sparked tremendous interest from investors, heightened customer demand, and a pressing need to expand our team to cater to the evolving requirements of more companies, teams, and innovators.The Role:As part of Forge's platform engineering team, you will join a group dedicated to innovation, developing scalable, secure infrastructure solutions that drive liquidity and growth in the private market. Our teams utilize a wide array of technologies to support our core platform, Metal, and we thrive on swift execution, delivering value, and adhering to our values of being bold, humble, and accountable.We are in search of a dedicated platform engineer with a minimum of 7 years of experience in delivering robust, scalable, and secure infrastructure solutions that are easy to maintain. The ideal candidate excels in collaborative environments and is driven by the desire to foster success through effective communication, crafting exceptional developer experiences, and making informed, data-driven decisions.To excel as a Staff Platform Engineer at Forge, you will leverage your expertise in infrastructure and software to deliver high-quality platforms both independently and through technical leadership of others. You will tackle advanced infrastructure projects – ranging from multi-cluster orchestration to SOC 2 compliance automation – while also being an engaged and collaborative team member.Location: This role requires in-office attendance 2-3 days a week in San Francisco, CA.

About Quizlet:At Quizlet, we strive to empower every learner to achieve their goals in the most effective and enjoyable manner possible. Our $1 billion-plus learning platform caters to tens of millions of students each month, including two-thirds of U.S. high schoolers and half of U.S. college students, facilitating over 2 billion learning interactions monthly.We merge cognitive science with innovative machine learning techniques to personalize and enhance the educational experience for students, professionals, and lifelong learners alike. Our enthusiasm lies in our potential to support a diverse range of learners through various approaches and tools.Let’s Shape the Future of Learning TogetherJoin us in designing and delivering cutting-edge, AI-driven learning tools that scale globally and unlock human potential.About the Team:The AI & Data Platform team is dedicated to creating and maintaining a robust, scalable, and efficient foundation for all data and machine learning operations at Quizlet. This team is the cornerstone of our AI aspirations. As we unify our AI initiatives to develop a powerful product portfolio, the platform team focuses on achieving operational excellence. We actively adopt and optimize the best MLOps and DataOps technologies to expedite innovation throughout Quizlet.About the Role:As a Senior AI & Data Platform Engineer, you will play a vital role in crafting Quizlet’s next-generation analytical data and machine learning architecture. Collaborating with teams across Data Science, ML Engineering, and Product, you will deliver scalable, dependable, and efficient systems that support the development and deployment of AI-enhanced features.Your success will be evaluated based on platform reliability, developer experience, and adoption across teams. This position offers the chance to work with state-of-the-art technologies and contribute to the foundational infrastructure that drives Quizlet’s AI roadmap.We are excited to inform you that this is an onsite position located in our San Francisco office. To encourage team collaboration, we require employees to be in the office at least three days a week: Monday, Wednesday, and Thursday, along with any additional days as requested by your manager or the company. We believe this work environment enhances productivity, fosters team synergy, and supports both employee and organizational growth.

Join Decagon as a Security Engineer where you will play a crucial role in safeguarding our systems and data. You will collaborate with cross-functional teams to identify vulnerabilities, implement security measures, and ensure compliance with industry standards. This is an exciting opportunity to work in a dynamic environment and contribute to the security posture of our organization.

Juicebox is looking for a Security Engineer based in San Francisco. The main focus is to safeguard digital infrastructure and maintain the security of systems and data. Key responsibilities Develop and apply security measures throughout company systems Support compliance efforts with relevant industry security standards Location This role is based in San Francisco.

Cogent Security seeks a Growth Marketing Specialist in San Francisco, CA. This position centers on developing and executing marketing strategies to drive company growth and raise brand awareness. Key responsibilities Coordinate with teams throughout the company to plan and launch marketing campaigns Develop and adjust strategies to attract new customers and maintain engagement with existing ones Apply digital marketing tools and analytics to guide campaign choices and assess effectiveness Contribute to meeting growth objectives through data-informed marketing efforts Requirements Background in digital marketing channels and analytics platforms Ability to collaborate across departments Comfort working with data to shape marketing plans and measure outcomes

About daydreamAt daydream, we are revolutionizing the SEO landscape by developing the world's most advanced SEO agent, complemented by a team of top 1% human experts. Our goal is to manage organic search intricately, freeing our clients from the burdens of hiring specialized teams, evaluating multiple tools, or managing external agencies.In today's competitive environment, excelling in search demands the production of expert-level content at scale, alongside constant adaptation to shifts in ranking systems and user behavior. Traditional tools merely provide metrics without actionable insights, while agencies rely on cumbersome manual workflows that fail to generate compounding growth. Even well-resourced teams often find it challenging to translate sustained efforts into consistent results.daydream simplifies this landscape by consolidating fragmented tools and external vendors into a single coherent system that continuously plans and executes SEO strategies. Our SEO agent takes charge of analysis, planning, and content generation, while seasoned Growth Leads translate this work into actionable outputs—shipped pages, technical adjustments, and updated priorities—holding accountability for performance over time.We have successfully raised over $20M from notable investors including First Round Capital, Basis Set Ventures, WndrCo, and SOMA Capital, and our growth is supported by industry leaders from Notion, Airtable, Webflow, and Dropbox, such as Lenny Rachitsky and Eli Schwartz, author of Product-Led SEO.The TeamYou will collaborate closely with a dedicated, senior team across engineering, design, and growth:Shravan (CTO), who previously served as an Engineering Lead at Flixed and a Software Engineer at Facebook, focusing on large-scale web scraping for Facebook Jobs and Meta Reality Labs.Vishruth (Founding Applied AI Engineer), a former Data Scientist at Klaviyo specializing in NLP, with a robust research background from Cornell.Daniel (Founding Applied AI Engineer), who previously worked as a Data Engineer on Tesla’s Autopilot team, specializing in large-scale data systems and applied machine learning, and was formerly the Lead Data Engineer at Replit.Tom (Founding Designer), who led product design at Blockless and plays a significant role in UI engineering.You will also interact directly with Growth Leads, senior SEO practitioners who manage the system daily and provide invaluable feedback on AI performance in real-world applications.Your ImpactIn your role as a Staff Engineer at daydream, you will provide vital technical leadership across the product while remaining deeply engaged in hands-on execution. You will closely collaborate with the CTO to define system architecture, guide project execution, and elevate quality standards throughout the engineering organization.

Join Our Team at Hayden AIAt Hayden AI, we are dedicated to revolutionizing public transit and government operations through innovative computer vision technologies. Our mission is to tackle real-world challenges faced by transit systems, enabling them to enhance safety, optimize transportation, and contribute to a sustainable future.We develop advanced mobile perception systems designed to improve transit flow and street safety. As a part of our dynamic team, you will work at the forefront of technology, utilizing AWS and GCP cloud services while developing cutting-edge Linux-based edge devices.Role OverviewWe seek an enthusiastic Senior Software Engineer to enhance our data platform, ensuring it is reliable, scalable, and high-performing. In this role, you will design and construct core data infrastructure, optimize data pipelines, uphold data quality standards, and collaborate closely with product and data science teams to deliver transformative data solutions that drive business insights.

About HyperspellHyperspell is revolutionizing the Memory & Context Layer for AI Agents.AI agents are brilliant yet lack context.While AI agents excel in standardized testing, they struggle with real-world applications. Today's cutting-edge agents lack the contextual understanding that humans naturally acquire through diverse interactions. This context evolves with their tasks.Hyperspell empowers AI agents with contextual awareness by integrating with users' workspace data, creating a tailored memory and context layer.Our ValuesWe are committed to shaping the future through bold innovations. Our goal is to establish ourselves as the indispensable context layer for organizations, enabling all their AI agents to connect seamlessly. We embark on this journey not because it is easy, but because it is significant.We prioritize care — for our customers, their success, the future of AI, and most importantly, for one another. As we build the frontier of AI, we strive to be one of the most technologically advanced yet profoundly human companies in history — a place where we can enjoy shaping the future together.Our InvestorsOur vision is supported by esteemed investors such as Y Combinator, Afore Capital, Scribble Ventures, and Pioneer Fund. Our angel investors include leading figures from OpenAI, Anthropic, xAI, and DeepMind, alongside respected founders from Silicon Valley like Siqi Chen (Runway) and Julian Weisser (On Deck).Our FoundersFounded in 2024 by Conor Brennan-Burke and Manu Ebert, Hyperspell is driven by experienced leaders. Conor previously spearheaded growth at Checkr, overseeing a $30 million API product portfolio and earning the title of 'the most helpful founder in YC'.Manu brings over 15 years of expertise in machine learning and AI, having successfully sold two companies and led high-growth engineering teams at Airbnb. Interestingly, he acquired his first .ai domain in 2014, needing to send a fax to the domain authority in Anguilla to do so.About the RoleAs our founding platform engineer, your mission will be to construct the infrastructure that makes Hyperspell feel magical — swift, dependable, and effortlessly scalable. You will be responsible for the foundation upon which our entire product is built, ensuring that when customers entrust us with their data, we uphold their trust.