Full Stack Software Engineer 2c Api Experience Jobs

What we're building Mutiny is the self-improving AI infrastructure for GTM teams to execute faster and close more revenue. Our ambition is to do for revenue velocity what Cursor and Claude Code did for engineering velocity. With Mutiny, everyone in sales and marketing gets a bench of GTM athletes that handle any work across their revenue motion and learn from what's actually moved their deals. In April we re-launched the product as an agent-first platform. Anthropic showcased us as a leader in AI GTM. MRR is growing more than 70% month-over-month, with customers like Uber, Rippling, and Snowflake. We're backed by Sequoia, YC, and Insight, and we're building a generational company. The opportunity Most sales leaders inherit a playbook. You'll write one. As a founding first sales manager, you'll partner with the founders, own the number end-to-end from first conversation to expansion, and use AI and our own product to build a team of full-stack sellers that outsells teams 5x their size. What works for our team becomes what works for every sales team running on Mutiny. The calls you make on hiring, motion, and product feedback will shape the company well beyond the sales org. This role is in person in New York City, five days a week. What you'll own Revenue. Sales-led revenue, end-to-end. Pipeline, conversion, ARR, retention, and expansion. The number is yours. PLG to enterprise. Define qualification, build the enterprise pipeline, and turn self-serve signups at companies like Rippling, Uber, Snowflake, Zendesk, and Gusto into seven-figure deals. Outbound. Generate net new meetings with the hottest AI companies and enterprises in the market. Build the motion, run it yourself first, then teach it. The team. Hire, coach, and develop a team of Account Executives into top performers. The ceiling on revenue is the ceiling on the team you build. The playbook. Write the sales motion that becomes the default for every team running on Mutiny. What works here ships to thousands

About Supabase Supabase is the Postgres development platform, built by developers for developers. We provide a complete backend solution including Database, Auth, Storage, Edge Functions, Realtime, and Vector Search. All services are deeply integrated and designed for growth. About the Role We're looking for engineers to join the team building Supabase Lite , a lightweight, TypeScript-native implementation of Supabase. It runs interchangeably on SQLite and Postgres and ships a PostgREST and Auth compatible API, so applications written against @supabase/supabase-js work as-is. It exists because AI builders and platform partners need a database they can give to every prototype without the cost or the wait: sub-second provisioning, a footprint small enough to run inside a sandbox, and an upgrade path to full Supabase when an app graduates to production. This is a role with a lot of agency. Small team, working product, patterns still to be set - you'll own large areas end to end and make real decisions from day one. What You'll Be Responsible For In this role, you'll: Grow API compatibility with the Supabase client, keeping behavior faithful to hosted Supabase and backed by conformance tests Bring more of the Supabase stack to SQLite Build and harden the path for upgrading a project from Supabase Lite to full Supabase Own the developer experience end to end: the CLI, local tooling, and docs Build and harden the hosted offering on a scale-to-zero, near-zero-cost footing, kept loosely coupled so the implementation can be swapped without a rewrite Work directly with design partners and turn real-world migration and integration friction into a sharper product Engage with the open-source community and contribute back to the broader Supabase stack. You Might Be a Good Fit If You Have substantial backend or full-stack experience with strong fluency in TypeScript, and have built or contributed to a backend system, framework, or developer platform before Are a strong generalist,

Who are we? Cohere is the leading security-first enterprise AI company. We build cutting-edge foundation AI models and end-to-end products that are designed to solve real-world business problems. We’re training and deploying frontier models for enterprises who are building AI systems. We believe that our work is instrumental to the widespread adoption of AI and we are looking for folks that want to be part of that. We obsess over what we build. Each one of us is responsible for contributing to increasing the capabilities of our models and the value they drive for our customers. Cohere is a team of researchers, engineers, designers, and more, who are all passionate about their craft. We are a global technology company headquartered in Toronto with key offices in London, New York City, San Francisco, Montreal, Paris, Berlin and Seoul. Join us! We’re looking for a senior engineer to help build, maintain and evolve the training framework that powers our frontier-scale language models. This role sits at the intersection of large-scale training, distributed systems, and HPC infrastructure. You will design and maintain the core components that enable fast, reliable, and scalable model training — and build the tooling that connects research ideas to thousands of GPUs. If you enjoy working across the full stack of ML systems, this role gives you the opportunity and autonomy to have massive impact. What You’ll Work On Build and own the training framework responsible for large-scale LLM training. Design distributed training abstractions (data/tensor/pipeline parallelism, FSDP/ZeRO strategies, memory management, checkpointing). Improve training throughput and stability on multi-node clusters (e.g., GB200/300, AMD, H200/100). Develop and maintain tooling for monitoring, logging, debugging, and developer ergonomics. Collaborate closely with infra teams to ensure our cluster, container environments, and hardware configurations support high-performance training. Investigate and res

Who are we? Cohere is the leading security-first enterprise AI company. We build cutting-edge foundation AI models and end-to-end products that are designed to solve real-world business problems. We’re training and deploying frontier models for enterprises who are building AI systems. We believe that our work is instrumental to the widespread adoption of AI and we are looking for folks that want to be part of that. We obsess over what we build. Each one of us is responsible for contributing to increasing the capabilities of our models and the value they drive for our customers. Cohere is a team of researchers, engineers, designers, and more, who are all passionate about their craft. We are a global technology company headquartered in Toronto with key offices in London, New York City, San Francisco, Montreal, Paris, Berlin and Seoul. Join us! Why This Role Is Different This is not a typical “Applied Scientist” or “ML Engineer” role. As a Member of Technical Staff, Applied ML, you will: Work directly with enterprise customers on problems that push LLMs to their limits. You’ll rapidly understand customer domains, design custom LLM solutions, and deliver production-ready models that solve high-value, real-world problems. Train and customize frontier models — not just use APIs. You’ll leverage Cohere’s full stack: CPT, post-training, retrieval + agent integrations, model evaluations, and SOTA modeling techniques. Influence the capabilities of Cohere’s foundation models. Techniques, datasets, evaluations, and insights you develop for customers will directly shape the next generation of Cohere’s frontier models. Operate with an early-startup level of ownership inside a frontier-model company. This role combines the breadth of an early-stage CTO with the infrastructure and scale of a deep-learning lab. Wear multiple hats, set a high technical bar, and define what Applied ML at Cohere becomes. Few roles in the industry combine application, research, customer-facing engineeri

Who are we? Cohere is the leading security-first enterprise AI company. We build cutting-edge foundation AI models and end-to-end products that are designed to solve real-world business problems. We’re training and deploying frontier models for enterprises who are building AI systems. We believe that our work is instrumental to the widespread adoption of AI and we are looking for folks that want to be part of that. We obsess over what we build. Each one of us is responsible for contributing to increasing the capabilities of our models and the value they drive for our customers. Cohere is a team of researchers, engineers, designers, and more, who are all passionate about their craft. We are a global technology company headquartered in Toronto with key offices in London, New York City, San Francisco, Montreal, Paris, Berlin and Seoul. Join us! Why This Role Is Different This is not a typical “Applied Scientist” or “ML Engineer” role. As a Member of Technical Staff, Applied ML, you will: Work directly with enterprise customers on problems that push LLMs to their limits. You’ll rapidly understand customer domains, design custom LLM solutions, and deliver production-ready models that solve high-value, real-world problems. Train and customize frontier models — not just use APIs. You’ll leverage Cohere’s full stack: CPT, post-training, retrieval + agent integrations, model evaluations, and SOTA modeling techniques. Influence the capabilities of Cohere’s foundation models. Techniques, datasets, evaluations, and insights you develop for customers will directly shape the next generation of Cohere’s frontier models. Operate with an early-startup level of ownership inside a frontier-model company. This role combines the breadth of an early-stage CTO with the infrastructure and scale of a deep-learning lab. Wear multiple hats, set a high technical bar, and define what Applied ML at Cohere becomes. Few roles in the industry combine application, research, customer-facing engineeri

About Ramp Ramp is building the smart infrastructure for finance teams, embedded in the transaction flow of every dollar a business spends. We automate how over $200B in annualized spend flows in and out of 70,000+ companies: authorizing payments, flagging risk, categorizing spend, and closing books. The problems are high-stakes, data-dense, and unforgiving. We hire people with high agency and high urgency. We look for slope over intercept. We care less about where you trained and more about what you’ve built. At Ramp, everyone is a builder who owns problems end to end and makes consequential decisions that shape the outcome. The median Ramp customer saves 5% and grows revenue 16% in their first year – far in excess of businesses operating without Ramp. We believe every ambitious company deserves the same. If you want to build systems that directly shape how companies move and manage billions, Ramp is the place to do it. About the Role We’re looking for someone to help lead the future of analytics at Ramp. This person will enable Ramp to get 1% better every day by developing data products and insights. They will partner closely with business stakeholders and product, engineering, and design counterparts to prioritize and execute on work, improve reporting, as well as drive results and process improvements. What You’ll Do Full stack development, building models to consume, transform, and expose data to stakeholders and production systems Drive a culture of experimental design, testing agenda, and best practices Contribute to the culture of Ramp’s data team by influencing processes, tools, and systems that will allow us to make better decisions in a scalable way Collaborate with P/E/D/D (product, engineering, data and design) teams to develop product roadmaps and measure success Work closely with data engineering teams to capture, move, store, and transform raw data into highly actionable insights, and partner with business teams to turn those insights into action Wha

About Ramp Ramp is building the smart infrastructure for finance teams, embedded in the transaction flow of every dollar a business spends. We automate how over $200B in annualized spend flows in and out of 70,000+ companies: authorizing payments, flagging risk, categorizing spend, and closing books. The problems are high-stakes, data-dense, and unforgiving. We hire people with high agency and high urgency. We look for slope over intercept. We care less about where you trained and more about what you’ve built. At Ramp, everyone is a builder who owns problems end to end and makes consequential decisions that shape the outcome. The median Ramp customer saves 5% and grows revenue 16% in their first year – far in excess of businesses operating without Ramp. We believe every ambitious company deserves the same. If you want to build systems that directly shape how companies move and manage billions, Ramp is the place to do it. About the Role The Applied AI team at Ramp is at the forefront of leveraging AI to drive innovation across our platform. We are seeking strong full-stack engineers who are proficient in web frameworks, backend development, and infrastructure. You will work on exciting projects such as AI Agents, Retrieval-Augmented Generation, Structured Extraction (we made https://github.com/1rgs/jsonformer ), internal tooling for customer-facing teams, fine-tuning models, and build infrastructure for LLM inference. If you're passionate about working on real production use cases of large language models (LLMs) and want to contribute to groundbreaking AI applications, this role is for you. What You’ll Do Ship full-stack AI projects end to end Build and integrate components for AI infrastructure, supporting production-level inference and fine-tuning Develop and improve engineering processes, tools, and systems to scale AI solutions across Ramp Create tools and internal platforms to enhance the productivity and capabilities of Ramp's AI and engineering teams What You

About Flexport: At Flexport, we believe global trade can move the human race forward. That’s why it’s our mission to make global commerce so easy there will be more of it. We’re shaping the future of a $10T industry with solutions powered by innovative technology and exceptional people. Today, companies of all sizes—from emerging brands to Fortune 500s—use Flexport technology to move more than $19B of merchandise across 112 countries a year. The recent global supply chain crisis has put Flexport center stage as we continue to play a pivotal role in how goods move around the world. We are proud to have the support of the best investors in the game who believe in our mission, solutions and people. Ready to tackle global challenges that impact business, society, and the environment? Come join us. The opportunity We're looking for a Staff Product Manager to lead the strategy for Trucking Technology—the systems that plan, procure, dispatch, and settle every truck move in North America—and drive the unification of our fragmented ground transportation business into a single Flexport-owned platform by 2027. You will define the vision for how planning, procurement, and carrier experience integrate into one operating system and execute with high autonomy. This unification is critical for Flexport's long-term vision of an automated supply chain. By owning the full stack, we will consolidate demand, capture leaking margin, and deliver a high-quality experience across modes. You will also drive the next generation of trucking automation—including AI-driven appointment scheduling and automated dispatch—to continue the strategic initiatives in our annual operating plan. Sitting at the intersection of product, operations, and business, you will be measured by operational and financial impact rather than just features shipped. This role involves redesigning the operating processes themselves and persuading leadership to adopt new models. You will also raise the bar

About Stitch Fix, Inc. Stitch Fix (NASDAQ: SFIX) Stitch Fix is redefining retail by combining human creativity with advanced data science and Generative AI. As we build the future of personalized shopping, we’re equally committed to building yours. We believe in investing in our team as much as our technology. Join us to be a trendsetter in the industry and help us redefine what’s possible for our clients, while we help you reach your full potential. About the Role As an ML Platform Engineer at Stitch Fix, you will play a key role in building and maintaining the critical infrastructure that powers machine learning and AI across our organization. You will design, develop, and support scalable, resilient services and frameworks for ML model training and deployment, feature engineering and serving, candidate generation, AI agent deployment and observability, and other core platform capabilities. In this role, you'll contribute to the day-to-day operations of the ML Platform team, ensuring the smooth functioning of existing systems while driving improvements. You’ll collaborate closely with full-stack data scientists, offering consultation and support to help them unlock the full potential of our platform. With significant autonomy, you’ll have the opportunity to shape the future of ML and AI at Stitch Fix. Your ideas and expertise will drive improvements, codify best practices, and influence how we approach machine learning and AI systems at scale. Responsibilities: Collaborate with cross-functional teams, including data scientists, engineers, and business partners, to solve complex distributed systems and business challenges at scale. Be part of a team with high visibility across the organization, driving impactful solutions that make a difference. Share your ideas and help guide the team’s investments toward high-value opportunities. Foster a culture of technical collaboration and contribute to the development of scalable, resilient systems. About You You bring

Who we are At Twilio, we’re shaping the future of communications, all from the comfort of our homes. We deliver innovative solutions to hundreds of thousands of businesses and empower millions of developers worldwide to craft personalized customer experiences. Our dedication to remote-first work , and strong culture of connection and global inclusion means that no matter your location, you’re part of a vibrant team with diverse experiences making a global impact each day. As we continue to revolutionize how the world interacts, we’re acquiring new skills and experiences that make work feel truly rewarding. Your career at Twilio is in your hands. . Hiring and how we work We use Artificial Intelligence (AI) to help make our hiring process efficient. That said, every hiring decision is made by real Twilions! Also, while we are a remote-first company, you may be asked to report in person on an ad-hoc basis for team gatherings, functional off-sites or customer meetings. . See yourself at Twilio Join the team as Twilio’s next Staff Offensive Security Engineer. About the job The Staff Engineer acts as a Technical Lead. You don't just find bugs; you design complex attack chains that demonstrate systemic risk. You spend as much time writing custom code and researching new bypasses as you do executing tests. Responsibilities In this role, you’ll: Full-Stack Penetration Testing: Perform manual and automated testing of web applications, APIs, and mobile apps (iOS/Android). Internal/External Network Audits: Conduct network and cloud level assessments with various tooling Vulnerability Validation: Triage and validate reports from automated scanners or bug bounty hunters to eliminate false positives and escalate true positives AI/LLM Probing: Perform initial prompt injection and jailbreak tests on AI prototypes, services, and applications using established checklists (OWASP Top 10 for LLMs). Technical Reporting: Draft high-quality reports that detail

Squarespace is seeking an Engineering Manager to lead our Purchase, Access & Subscription Success (PASS) team. The group is responsible for the buyer-facing purchase and subscription experience, including the multi-product cart, secure checkout flows, subscription and billing panel, cross-selling, cancellation surveys, and invoices. This team's work directly drives revenue by shaping how customers purchase, manage, and retain their Squarespace subscriptions. As the manager of this team, you'll lead a group of experienced frontend and backend engineers who build and maintain the cart experience and checkout flows, power the subscription and billing panel UI, drive cross-sell and upsell initiatives, and deliver new product integrations. You'll work closely with product, design, analytics, and peer engineering teams to deliver seamless, high-converting purchase experiences for Squarespace customers worldwide. This is a hybrid role working from our Dublin office 3 days per week. You will report to the Senior Engineering Manager of Revenue Systems. You’ll Get To… Lead a full-stack engineering team responsible for the multi-product cart, secure checkout flows, subscription and billing panel experience, cross-sell services, cancellation surveys, and invoices. Drive the execution of the Monetization roadmap, including secure checkout migration, new product integrations, and cross-sell optimization. Coach, mentor, and develop engineers through regular feedback, goal-setting, and technical guidance. Collaborate with cross-functional partners (Product, Design, Analytics, and peer engineering teams) to align engineering initiatives with business priorities. Foster a culture of technical excellence, reliability,

About the Role Join Peloton’s Global Network Services team as a Senior Engineer, sitting at the unique intersection of high-scale enterprise networking and high-stakes media production. In this role, you will architect and support the global infrastructure that powers our corporate offices, warehouses, and flagship New York Broadcast Studio. Acting as the key bridge between Global Cloud Engineering and Studio Operations, you will deploy highly resilient, scalable architectures that deliver live streaming content seamlessly to millions of members worldwide. Your Daily Impact Global Architecture & Deployment: Design, optimize, and secure Peloton's global network footprint, integrating Cisco, Meraki, Aruba, and Palo Alto Networks across hybrid on-premises and AWS environments. Studio & Broadcast Reliability: Lead deep-dive traffic analysis and troubleshooting for our NY studio, ensuring 24/7 uptime for live broadcasts, real-time video streaming, and OTT media delivery. Operational Leadership & Lifecycle Management: Manage the end-to-end network project lifecycle—from traffic shaping and SD-WAN optimization to establishing SOPs, security policies (with InfoSec), and handling Tier-3 disaster recovery. You Bring To Peloton Broad & Deep Network Expertise: 8+ years in Network Engineering, including 6+ years in complex SaaS environments and 4+ years designing public cloud networking (specifically AWS). Advanced Protocol & Security Mastery: Expert knowledge of L2/L3 protocols (BGP, OSPF, EIGRP), security protocols (IPsec, 802.1x, RADIUS), SD-WAN, and SDN/SDDC full-stack solutions. Media & Streaming Specialization: 3+ years optimizing IP networks specifically for live video delivery, utilizing multicast/unicast technologies and streaming protocols like HLS, RTMP, and SRT. Education & Elite Certifications: A Bachelor’s degree in Engineering or Computer Science, backed by active CCIE or JNCIE certifications (required). Collaborative Mindset: A curious

We're transforming the grocery industry At Instacart, we invite the world to share love through food because we believe everyone should have access to the food they love and more time to enjoy it together. Where others see a simple need for grocery delivery, we see exciting complexity and endless opportunity to serve the varied needs of our community. We work to deliver an essential service that customers rely on to get their groceries and household goods, while also offering safe and flexible earnings opportunities to Instacart Personal Shoppers. Instacart has become a lifeline for millions of people, and we’re building the team to help push our shopping cart forward. If you’re ready to do the best work of your life, come join our table. Instacart is a Flex First team There’s no one-size fits all approach to how we do our best work. Our employees have the flexibility to choose where they do their best work—whether it’s from home, an office, or your favorite coffee shop—while staying connected and building community through regular in-person events. Learn more about our flexible approach to where we work. Overview As a Senior Machine Learning Engineer II on the Ads Response Prediction team, you will lead the design and development of core ML models that power Instacart’s ads ecosystem. This is a research-leaning role focused on theoretical problem formulation, training methodology, and model quality rather than infrastructure or full-stack engineering. You will tackle fundamental challenges in pCTR modeling such as mitigating selection bias, position bias, and optimizer’s curse in training data, improving model calibration across surfaces and domains, and advancing our multi-task learning and sequence modeling capabilities. You will also have the opportunity to shape our next-generation foundation model approach for ads ranking and contribute to cutting-edge retrieval systems like TIGER (Transformer Index for Generative Recommenders), Semantic ID and domain language

Ready to do the most impactful work of your career? At Coinbase , we are uncompromising on our mission to increase economic freedom. The bar is high, the environment is intense, and we like it that way. This isn't a place for complacency, it’s a place to be pushed past your perceived limits. If you're ready to build the future of finance alongside people who refuse to settle for "good enough," you belong here. Coinbase is a remote-first, but not remote-only company. Expect to get together quarterly for intense in-person working sessions called “surges.” learn more about working at Coinbase . As an Engineering Manager on the FINT (Financial Intelligence) team within FinHub in the Platform group, you'll lead the engineers building the account and transaction history infrastructure that underpins every Coinbase product. FINT owns the universal account primitive, the real-time transaction history engine, and the internal developer experience platform for FinHub. You'll guide your team through a critical inflection point: re-architecting these foundational systems for the next decade of scale while enabling new financial products like sub-accounts, retirement accounts, and agentic trading experiences. What you'll do: Lead and grow a team of 6 engineers across multiple levels, coaching on technical excellence, career development, and organizational impact Drive the re-architecture of core account and history systems to support new product primitives and higher throughput demands at Coinbase's next stage of growth Own the Finhub Tools roadmap, building internal UIs, dashboards, and agentic workflows that accelerate engineering and operations teams across the company Shape architectural decisions across distributed systems, streaming pipelines, and full-stack tooling, fostering a culture of high-quality code and thorough design reviews Collaborate with product, finance, and engineering leadership to define and execute a quarterly roadmap, breaking complex infras

Airbnb was born in 2007 when two hosts welcomed three guests to their San Francisco home, and has since grown to over 5 million hosts who have welcomed over 2 billion guest arrivals in almost every country across the globe. Every day, hosts offer unique stays and experiences that make it possible for guests to connect with communities in a more authentic way. The Community You Will Join: At Airbnb, we're driven by our mission to create a world where anyone can belong anywhere. The Community Support (CS) Platform & Engineering team is at the forefront of this mission - building the AI systems that power world-class support experiences for millions of guests and hosts globally. We are building to a bold vision, where our AI doesn't just answer questions, but truly understands each person's unique context, mirrors the judgment and empathy of our highest-performing human agents, and delivers 10-Star support at scale. The AI Personalization team is the intelligence layer that makes this possible. We own the full-stack systems that enable the AI to give every guest and host a response that feels written just for them. The Difference You Will Make: We are looking for a visionary Staff Platform Manager to lead the product strategy and execution for AI Personalization across Airbnb's customer support ecosystem. This is one of the most consequential roles in CS Platform Product: you will own the full stack of personalization, from the underlying retrieval systems to the consumer-facing AI experience, and scale it across multiple Airbnb surfaces. The north star: enable AIA to emulate the judgment, empathy, and accuracy of Airbnb's highest-performing human agents. To achieve this, you'll build a platform that continuously enriches the AI's understanding of each user, and surfaces that understanding at the right moment, in the right form, across every channel. This role demands a rare combination: customer experience chops to build meaningful and delightful perso