Staff Engineer – Full Stack

Senior AI EngineerLocation: Boston (preferred) or Nashville | Travel: ~15% | Reports to: CTOAbout SynqueryAt Synquery, we are revolutionizing the way organizations access and scale human expertise through cutting-edge AI research. Supported by leading venture capital firms such as Afore Capital, Audacious Ventures, and Caesar Ventures, we collaborate with top consulting firms and investors to redefine working methodologies. Our AI-driven platform delivers expert insights in days, not weeks, transforming how clients approach due diligence, competitive intelligence, and market research.We foster a culture that prioritizes speed, entrepreneurial spirit, and a relentless pursuit of success. As we expand rapidly, we seek extraordinary engineers eager to develop world-class AI systems and contribute to the future of AI in business.The RoleWe invite a seasoned Senior AI Software Engineer to join Synquery at an exhilarating phase of our growth. This pivotal role entails significant responsibility across the entire product lifecycle, collaborating directly with the CTO to design and develop the systems that power our platform from start to finish.Our platform processes vast amounts of data through a sophisticated expert network automation pipeline, identifying the right experts, vetting credentials, ensuring availability and compatibility, and executing AI-driven interviews that yield actionable insights—all for some of the most demanding clients in consulting and investment. The technical challenges are substantial, the stakes are high, and the pace is rapid.Our mission is to democratize access to expert-level answers for questions lacking digital solutions—knowledge that resides solely in the minds of seasoned professionals. You will be instrumental in building the AI infrastructure that enables this: robust, scalable, and genuinely advancing the possibilities of agentic AI in real-world applications.

About Us:Axiomatic AI is at the forefront of creating a revolutionary class of AI systems that embody the principles of the scientific method. By merging deep learning with formal logic and physics-based modeling, we are developing verifiable and interpretable AI systems that enhance and support human researchers within critical scientific and engineering processes.Our ambitious mission, known as 30×30, aims to achieve a 30-fold improvement in the speed, accessibility, and cost of semiconductor and photonic hardware development by the year 2030.We are committed to transforming hardware design and simulation across these industries and are assembling a team of exceptionally driven professionals to transition innovations from research into viable commercial products.Position Overview:As a Senior Applied AI Engineer, you will serve as a vital link between AI research and the production of software. Your responsibilities will include:Collaborating with users and internal stakeholders to pinpoint workflows where AI can add significant value.Designing and implementing product features powered by large language models (LLMs), utilizing frameworks such as PydanticAI or similar tools.Making informed trade-offs among models and methodologies, considering factors such as quality, latency, cost, privacy, and reliability.Facilitating AI developers in deploying their work in a reproducible and secure manner.Setting engineering standards for applied AI development, including testing, code reviews, maintainability, and operational readiness.Working closely with backend engineers to seamlessly integrate AI functionalities into our products.Mentoring junior AI developers and overseeing pull requests to guarantee high-quality output and consistent development patterns.Your Mission:Applied AI Product DevelopmentOversee applied AI features from start to finish: discovery, design, implementation, rollout, and iteration.Convert user feedback into clear technical requirements and realistic delivery plans.Create LLM workflows, including tool-calling agents, structured output pipelines, retrieval/tool integrations, and effective prompting strategies.Iterate rapidly while maintaining high production quality (readability, maintainability, debuggability).Model & Prompt StrategySelect and assess LLMs (OpenAI/Anthropic/others) based on tangible constraints: quality, cost, latency, context limitations, and reliability.Develop prompt patterns and guardrails, including structured prompts, schemas, constraints, and fallback mechanisms.Design and execute lightweight evaluations to prevent regressions.

At WHOOP, we are driven by a commitment to enhancing human performance and extending healthspan. Our platform empowers a wide range of members, from Olympians and professional athletes to fitness enthusiasts, enabling them to achieve their peak potential by gaining profound insights into their bodies and daily lives. We are eager to welcome highly skilled and motivated engineers to join our team, propelling our established system to unprecedented heights. Join the AI Platform team at WHOOP where we are tasked with building a robust foundation that facilitates the scalable, responsible, and accessible implementation of Generative AI across our diverse array of products. Our primary focus is on creating reusable infrastructure, services, and tools that empower both product and software teams to explore, integrate, and deploy GenAI-powered features both efficiently and securely. By simplifying the complexities associated with large language models (LLMs) and ensuring the delivery of personalized insights to our members, our platform accelerates innovation while maintaining a consistent, high-quality user experience. As a Senior Software Engineer on the AI Platform team, you will play a pivotal role in designing and scaling the systems that underpin WHOOP’s Generative AI capabilities. You will develop robust, modular services and user-friendly tools that streamline the interaction with GenAI models across the organization. This position merges a platform-oriented mindset with engineering excellence, helping WHOOP unlock the full potential of Generative AI across our core products, coaching services, insights, and beyond.

At Klaviyo, we celebrate the diverse backgrounds, experiences, and perspectives that each team member brings to our vibrant workplace. We believe that everyone deserves an equal opportunity to succeed, and we value the unique insights that individuals contribute beyond traditional qualifications. If you find that you closely match the criteria but not perfectly, we encourage you to apply. Interested in discovering more about life at Klaviyo? Visit klaviyo.com/careers to see how we empower creators to take charge of their future.At Klaviyo, we envision a future where software transcends traditional productivity tools, evolving into intelligent systems that autonomously optimize based on performance metrics. Our platform serves as a crucial bridge between businesses and their consumers, boasting over 167,000 customers, billions of consumer profiles, and a vast array of customer interactions and conversion data. This presents an exciting opportunity to develop cutting-edge AI and machine learning technologies that will enhance our product offerings and create AI agents capable of autonomously orchestrating marketing strategies and customer experiences across various industries.As a Senior AI Engineer at Klaviyo, you will be instrumental in architecting and developing scalable backend systems and user experiences that drive our AI innovations forward. You will collaborate closely with product managers, machine learning engineers, and data scientists to create substantial real-world impacts at scale. This role is primarily backend-focused, providing opportunities to influence system architecture, asynchronous processing pipelines, distributed systems, and more.

FieldAI is at the forefront of revolutionizing robot interactions with the real world. Our dynamic R&D team, based in Boston, is committed to developing risk-aware, reliable, and field-ready AI systems that address the most challenging problems in robotics and unleash the potential of embodied intelligence. We adopt a pragmatic methodology that transcends traditional off-the-shelf and purely data-driven approaches, integrating cutting-edge research with practical deployment. Our solutions have been successfully implemented globally, and we continuously enhance model performance through rapid iterations informed by real-world applications.We are looking for a seasoned Senior Engineering Manager to lead an agile, high-performing team of research scientists and engineers at the cutting edge of robotics AI. In this pivotal role, you will craft and implement research strategies, oversee the creation of advanced AI algorithms, and steer initiatives from initial research to real-world deployment on physical robotic systems. You will harmonize deep technical leadership with effective people management, ensuring scientific excellence and tangible impact on the field.This is your chance to influence the future of robotic autonomy by transforming groundbreaking research into systems that function reliably in complex, dynamic environments on actual robots.

In alignment with the Massachusetts state government's vision to position the state as a frontrunner in artificial intelligence innovation, the Massachusetts AI Hub has been launched within the Massachusetts Technology Collaborative (MassTech). This hub fosters innovative collaborations among government entities, industry leaders, startups, and academic institutions to tackle the most pressing global challenges while creating economic opportunities for businesses and residents alike.The Massachusetts AI Hub is dedicated to democratizing access to AI technology for both small and large enterprises across key sectors, empowering researchers, entrepreneurs, and startups to develop and commercialize transformative ideas.The Hub is in search of a visionary Senior Director to spearhead the orchestration of resources within the organization. This leadership role will facilitate the practical adoption of the AI Hub’s essential resources, such as the Massachusetts Data Commons Collaborative and a cutting-edge GPU cluster located at the Mass Green High Performance Compute Center. The objective is to expedite the state’s journey from AI capabilities to tangible implementation by managing impactful use cases that drive economic growth and societal benefits.The Senior Director will be instrumental in nurturing existing and forging new partnerships with research institutions, strategic industry sectors, government agencies, and nonprofit organizations that will engage with the AI Hub's data and computational resources. Furthermore, this role will involve identifying additional grant funding and revenue opportunities as a part of the AI Hub’s financial sustainability model, including federal and state funding, industry contributions, membership initiatives, philanthropic efforts, and other revenue-generating services.Key ResponsibilitiesOversee the development, governance, and utilization of the Massachusetts Data Commons while establishing secure and ethical data management protocols.Design and implement a strategic framework for the allocation of compute resources, ensuring optimal utilization and equitable access across critical Commonwealth initiatives.Identify and prioritize significant AI challenges presented by regional industry and academic partners.Translate business objectives into technical Hub projects, focusing on sectors such as life sciences, healthcare, robotics, climate technology, advanced manufacturing, and fintech.Forge partnerships with CEOs and CTOs to promote collaboration; monitor performance metrics and act as a public figure for the Massachusetts AI Hub.Manage and develop a team to meet the evolving needs of the organization.

Join Klaviyo as a Senior AI Engineer and be a pivotal part of our innovative team, driving the future of AI technology in marketing automation. You will leverage your expertise to design, develop, and implement cutting-edge AI solutions that enhance our products and empower our clients.

Join our team as a Senior Platform Engineer where you'll play a pivotal role in shaping our infrastructure. Your expertise will be essential in designing, building, and scaling the core platform that underpins our AI-driven security products. Collaborate with talented teams across AI, backend, and product domains to ensure our systems are high-performing, stable, reliable, and secure.Take ownership of critical components within our cloud and service platform, driving automation wherever possible while continually enhancing the delivery, monitoring, and scalability of our mission-critical applications. If you have a passion for building robust infrastructure that empowers teams to deliver swiftly and confidently, this opportunity is tailor-made for you.

Join our dynamic marketing and communications team as a Digital Marketing Specialist at JVS Boston! In this pivotal role, you will assist in crafting engaging content, driving program outreach, supporting events, and performing various essential tasks. Your contributions will be vital in promoting JVS Boston’s diverse program offerings, managing our vibrant social media presence, and designing impactful digital and print materials that align with our communication and marketing strategy.We seek a creative individual with a keen eye for aesthetics and a solid background in graphic design, photography, social media campaigns, and versatile writing tailored for diverse audiences. As part of our Advancement department, you will play a crucial role in client-facing outreach and donor engagement efforts.

About Hike MedicalHike Medical is revolutionizing musculoskeletal care, beginning with foot health. Our innovative AI-driven vision platform transforms a quick 30-second web-based foot scan into custom-engineered, 3D-printed insoles that help prevent pain before it occurs. We are already safeguarding the well-being of on-their-feet workforces at Fortune 50 companies, significant health systems, and manufacturers across middle America. Recently funded by top-tier venture capitalists, we maintain a fast-paced, no-nonsense execution culture from our Boston Seaport headquarters as we aim for $100M ARR and to support 10 million Americans in their daily lives.First and only PDAC-approved 3D printed custom insole globally Three proprietary AI models enhancing the user experienceTwo product lines: one for employers & health plans, and another for clinics to provide affordable foot care, creating a beneficial cycle of clinician-validated data.Expanded access to care for over 100,000 Americans to dateRevenue growth of 10x from 2023 to 2024, with projections to continue this trend in 2025. Consistently profitable month-over-month.The RoleAs a Senior Software Engineer, you will develop and deploy the essential systems behind Hike’s AI healthcare platform. Serving as the backbone of Hike's rapidly growing, mission-driven initiative, you will design scalable services, implement production-ready AI, and create user experiences that enhance patient outcomes. From your first day, you will enjoy significant autonomy and a direct impact on transforming the US healthcare landscape.Why This Opportunity is Career-Defining:Your code will empower individuals to move without pain.You will have complete autonomy to create, deploy, and witness the outcomes—transitioning from concept to production in mere hours or days.You’ll collaborate with a high-performing team of elite engineers and AI researchers, where every addition substantially influences our mission.You'll thrive in a culture that rejects bureaucracy, discourages unnecessary complexity, and values trust as our core principle.What You'll Work On:Architect, build, and refine high-performance, scalable systems that drive AI-based solutions.Design resilient, serverless architectures within a TypeScript and AWS environment.Create developer-friendly APIs and SDKs to enhance integration and usability.

Location: Waltham, MA (Hybrid - 3 days In-Office) At ERGO NEXT, our mission is to empower entrepreneurs to succeed. We achieve this by being the only technology-driven, full-stack provider of small business insurance in the industry, transforming the entire value chain and enhancing the customer experience. In essence, where there are small businesses, ERGO NEXT is there to support them. Since our inception in 2016, we have assisted hundreds of thousands of small business customers across the United States in obtaining fast, tailored, and affordable coverage. Backed by leaders in both the insurance and tech sectors, we are on a growth trajectory, and we want you to be a part of it!

OverviewJoin us as a Senior Principal AI Engineer where you will play a pivotal role in shaping and leading the development of complex, production-grade AI systems. This position is tailored for innovative builders—those with a proven track record of transforming AI concepts into operational systems, adept at identifying and overcoming challenges that arise during scaling, and skilled in empowering teams to accelerate progress without compromising quality.This is not a conventional strategy or management position; instead, it is a highly technical role that significantly influences organizational direction. You will establish the technical roadmap through coding, system design, and fostering a builder-centric culture even as we navigate increasing complexity and scale.

ServiceNow is seeking a Senior AI Engineer focused on Delivery Acceleration in Boston. This position centers on using artificial intelligence to improve how the company delivers its services and solutions. Role overview The Senior AI Engineer works with cross-functional teams to design and implement AI-driven improvements in delivery processes. The goal is to make these processes more efficient and effective, supporting ongoing business transformation efforts. Key responsibilities Apply AI expertise to streamline and optimize service delivery workflows. Collaborate with colleagues from different departments to identify opportunities for AI solutions. Develop and deploy AI models that support business goals and enhance delivery outcomes. Collaboration This role involves regular interaction with teams across the organization. Working together, you will help shape and implement AI strategies that improve ServiceNow’s operations and customer experience.

Join Klaviyo as an AI Engineer II and become a vital part of our innovative team. In this role, you will leverage your expertise in artificial intelligence to develop cutting-edge solutions that enhance our marketing automation platform. Collaborate with cross-functional teams to implement machine learning algorithms and data-driven strategies that drive customer engagement.

Veeva Systems, a trailblazer in the industry cloud space, is dedicated to expediting the delivery of therapies to patients in the life sciences sector. With a remarkable ascent as one of the fastest-growing SaaS companies globally, we achieved over $2 billion in revenue last fiscal year, with promising growth opportunities on the horizon.At Veeva, we embody core values that guide our mission: Doing the Right Thing, Customer Success, Employee Success, and Speed. In 2021, we made history by becoming a public benefit corporation (PBC), reinforcing our commitment to balancing the needs of customers, employees, society, and investors.As a Work Anywhere company, we empower you with the flexibility to choose your work environment, whether at home or in the office, enabling you to excel in your ideal setting.Join us in transforming the life sciences industry and making a meaningful impact on our customers, employees, and communities.

At WHOOP, we are dedicated to enhancing human performance and extending healthspan through innovative solutions. Our mission is to empower individuals to reach their peak performance and enjoy longer, healthier lives. Utilizing advanced AI technologies, we transform continuous physiological data into meaningful insights and actionable recommendations. The AI platform is vital to our vision, converting raw physiological signals into personalized guidance that our members can implement daily.We are seeking a Senior AI/ML Engineer to play a crucial role in scaling our AI-driven experiences, which include WHOOP Coach, AI-powered Support, and various intelligent features across our product suite. In this pivotal position, you will be responsible for overseeing essential components of the AI Platform that power our internal AI Studio, such as evaluation pipelines, fine-tuning workflows, LLM observability, and experimentation tools. You will collaborate closely with product teams and data scientists to translate real user needs into robust, impactful AI systems that evolve based on actual usage.

At Compass, our mission is to help everyone find their place in the world. Founded in 2012, we’re transforming the real estate industry through our innovative end-to-end platform that empowers residential real estate agents to provide outstanding service to both sellers and buyers.About the Role:As a Senior Engineering Manager within the Search & Listings (S&L) organization, you will spearhead a team pivotal to a real estate technology platform designed to simplify the processes of finding, buying, and selling homes. The S&L team is responsible for aggregating property and listing data from numerous sources across the nation, refining that data, and making it easily accessible on our customer platform. You will play a key role in developing exceptional experiences for agents and consumers as they search, track, share, and explore properties and listings. Our tools are foundational for enabling the entire Compass platform, allowing agents to enhance their efficiency and focus on expanding their businesses.Your responsibilities will include overseeing critical products and services essential to our agent workflows, which encompass both agent and consumer-facing real estate search experiences. Given its central position and integration with various core products, this role demands a seasoned manager who upholds high operational standards while facilitating vital discussions with stakeholders across multiple functions and organizations. You will engage in projects that align with the primary priorities of our technology roadmap and business objectives, managing a substantial infrastructure footprint with a focus on resilience and cost efficiency, all while collaborating across diverse teams. Engineering managers have a significant influence beyond their teams, delivering impactful results that contribute to organizational objectives and company-wide goals. You will lead a highly skilled and dynamic team of developers to deliver essential features from our roadmap. Your leadership will foster a culture of ownership, innovation, and agility while nurturing collaboration and trust. Collaborating with Product Managers, Designers, and Staff Engineers, you will identify and implement the right long-term solutions for our customers.You will be instrumental in establishing the guiding principles, standards, and operational excellence for the Compass platform and engineering team.

Join Our Mission at LangChainAt LangChain, we are dedicated to making intelligent agents a standard part of everyday life. Our goal is to provide developers with the essential tools to transition from prototyping to deploying production-ready AI agents that can be trusted by teams. Starting as a widely embraced open-source initiative, we have evolved to offer a robust platform for constructing, assessing, deploying, and managing agents on a large scale.Our suite of products, including LangChain, LangGraph, LangSmith, and Agent Builder, empowers teams to deliver real AI solutions across various sectors, from startups to major corporations. Esteemed clients such as Replit, Clay, Coinbase, Workday, Lyft, Cloudflare, Harvey, Rippling, Vanta, and 35% of the Fortune 500 rely on LangChain to enhance their AI capabilities.Having successfully raised $125M in Series B funding from prominent investors such as IVP, Sequoia, Benchmark, CapitalG, and Sapphire Ventures, we are in an exciting phase of growth where innovation thrives, and every team member's input significantly influences our progress and collaborative processes. At LangChain, your efforts will directly impact the application of AI technology in the real world.About Our Deployed Engineering TeamThe Deployed Engineering team plays a vital role in collaborating with organizations to design and implement AI agents in production. Our mission is to transform innovative concepts into reliable systems that teams can depend on.This is a technical, hands-on team that collaborates closely with client engineers throughout the entire project lifecycle, from pre-sales assessments to post-deployment support. Our primary focus is on achieving technical success, co-designing agent architectures, and ensuring that clients can manage agents effectively at scale with the help of the LangChain suite.Your Role as a Deployed EngineerAs a Deployed Engineer, you will tackle some of the most challenging issues in applied AI—focusing on delivering systems that teams actually depend on in production, rather than mere demonstrations or research projects. The feedback loop is rapid, the results are tangible, and your contributions will directly influence the construction of AI agents in practical applications.

Company Overview:Maven AGI is an innovative enterprise AI platform dedicated to harnessing the power of artificial general intelligence (AGI) to revolutionize customer service. Established in July 2023 by industry leaders from HubSpot, Google, and Stripe, Maven specializes in creating conversational AI agents that deliver precise and autonomous support, enhancing customer satisfaction on a large scale.Our platform seamlessly integrates diverse systems, consolidates knowledge and personalization resources, and facilitates intelligent actions—all without the need for expensive system modifications. We envision a future where our technology manages complex tasks, empowering individuals to concentrate on their strengths: creative problem-solving, relationship building, and providing remarkable customer experiences.We are rethinking enterprise customer experiences, starting with support. Our conviction is that the current support landscape is flawed: it is slow and tedious for customers, and resource-heavy for companies.At Maven, we are committed to delivering superior and cost-effective support for both users and agents. Thanks to recent breakthroughs in Generative AI, we can now offer delightful customer interactions at a fraction of the traditional costs.Team:Maven boasts a stellar team drawn from Google, Meta, Amazon, Microsoft, and Stripe, with guidance from executives and advisors from OpenAI, Google, HubSpot, and Stripe.Position Overview:As a Senior Forward Deployed Engineer at Maven AGI, you will play an essential role in our go-to-market strategy, supporting our customer experience team to promote the adoption of our AI solutions. Your responsibilities will include identifying customer challenges, designing bespoke solutions, and ensuring that new clients are positioned for success by delivering tangible business outcomes. This role requires a blend of technical expertise, sales acumen, and a commitment to customer success throughout their journey.What You’ll Do:Solution Design: Collaborate with the sales, CX, and product teams to create tailored solutions that resolve specific customer pain points and yield measurable ROI swiftly.Technical Implementation: In a post-sales capacity, collaborate closely with project managers and solution engineering teams to devise an implementation strategy and oversee the full product rollout.