Senior Account Executive at Antithesis | London, UK

About the Senior Account Executive RoleAntithesis is seeking a dynamic Senior Account Executive with a proven track record in selling developer tools to highly technical clients, ranging from senior engineers to C-level executives.As a Senior Account Executive, you will report to either a Regional Sales Leader (West) or directly to the VP of Sales, depending on your location. This position involves close collaboration with customers, prospects, and internal teams to enhance the adoption of Antithesis’s innovative technology. Occasional travel may be required, along with a proactive approach to contribute beyond conventional role definitions in our startup environment.Your Key Responsibilities:Manage intricate enterprise sales cycles from prospecting to closure.Take ownership of your client portfolio with high accountability.Engage in sales dialogues with senior engineers and executive leadership, focusing on both technical and business aspects.Contribute to defining and refining customer qualification criteria and sales processes as we grow.Represent customer interests in discussions with product and engineering teams.Drive successful customer adoption by effectively communicating value, ROI, and integration aspects.Mentor new Account Executives and foster a collaborative sales culture.Collaborate with marketing to enhance messaging and sales materials based on market input.This role emphasizes the FinTech and Financial Services sectors while supporting other enterprise opportunities as necessary.

About AntithesisAt Antithesis, we are revolutionizing the software testing industry with our innovative approach. Our platform harnesses cutting-edge fuzzing and property-based testing techniques to uncover deep-rooted bugs in customer software, exploring systems in ways that conventional testing methods simply cannot achieve.In the nascent stages of transforming a powerful core technology into a market-ready product, we are defining the intricate aspects of our offering, operational model, and customer engagement processes. This role thrives in a high-ambiguity, 0→1 environment where your product insights will be crucial.About the RoleWe are seeking experienced Product Managers to take ownership of critical components within the Antithesis product suite.This position transcends mere execution within a pre-established framework. You will engage in a dynamic, technical landscape where many decisions will be pioneering. Your role will involve defining product segments, shaping workflows, influencing prioritization, establishing success metrics, and collaborating intimately with engineering and design teams to create robust foundations.You will work alongside engineers in a technically demanding environment where challenges are intricate and trade-offs significant. Your partnership with the engineering team will be essential in determining what we create, the rationale behind it, and the criteria for measuring our success.This position is tailored for individuals eager to build rather than optimize existing processes or mature products.Areas of FocusWe are looking for a product manager based in London to oversee the Property-Based Testing (PBT) and Specification domain. This encompasses, but is not limited to:How customers present their software for Antithesis to test.How customers specify expected and unexpected behaviors of their software.How customers communicate issues that they do or do not prioritize.How customers provide insights on the most compelling areas of their code for exploration.Management of the Antithesis SDK.You will collaborate closely with the Antithesis PBT technical team in our London office, which includes world-renowned experts in property-based testing.What You’ll DoFacilitate discovery sessions with customers to understand their needs.Define and prioritize product initiatives within your domain.Collaborate with engineering to shape the product vision.

About AntithesisAt Antithesis, we are transforming the landscape of modern distributed systems testing and deployment. Our innovative platform is trusted by engineering teams that prioritize unwavering reliability, scalable performance, and intricate technical insights. We don’t just ensure system correctness and reliability; we exist because developers need a superior solution. If you’ve faced the frustration of production outages, endured challenging on-call weeks, or experienced release delays due to critical bugs, you’ll resonate with our mission. If you're driven by a passion for developer-centric products, system resilience, and accuracy, we want to hear from you.About the RoleWe seek an innovative thinker who thrives in challenging environments and isn’t afraid to disrupt the norm. As a Solutions Engineer, you will deploy the powerful tools and technologies from the Antithesis platform to identify bugs and challenge our customers’ software. You will effectively communicate and persuade potential customers about the revolutionary approach to software testing and reliability that Antithesis embodies.What You'll DoLead Proof-of-Concept (POC) initiatives to showcase the value of Antithesis products to prospective customers.Engage in onboarding processes for new customers.Provide technical support to the sales team through qualifications and consultations.Facilitate workshops for customers focusing on Property-based Testing (PBT) and other relevant topics.Identify bugs and evaluate open-source software.Establish thought leadership in testing complex systems.Create, maintain, and present product demonstrations.Guide customers and prospects in utilizing the Antithesis platform and its testing methodologies.Who You AreTechnically adept and curious about technology trends.Eager for new challenges and opportunities.Keen to learn and adopt emerging technologies.Resilient under tight deadlines and high-pressure scenarios.Excellent communicator, both in writing and verbally.Collaborative team player, able to work effectively with a small, skilled team.Professional yet adaptable, comfortable in a fast-paced environment.

About AntithesisAt Antithesis, we are on a bold mission to transform the landscape of testing and releasing modern distributed systems. Trusted by engineering teams worldwide, our platform guarantees unparalleled reliability, robust performance, and comprehensive technical insights. We understand the challenges developers face, from production outages to release delays caused by elusive bugs. If you share our passion for creating developer-centric solutions that enhance system resilience and accuracy, we invite you to join us.About the RoleAs a Customer Success Engineer (CSE), your role is pivotal in ensuring our customers achieve success. You will dive deep into understanding their complex software systems and pressing business requirements, leveraging our state-of-the-art platform to facilitate rigorous testing of their mission-critical applications. You will collaborate with engineers from innovative companies, identifying bugs before they reach users and contributing to their success.What You’ll DoCustomer Success Engineers must effectively grasp customers’ business goals and technological landscapes to deliver value throughout their journey—from onboarding to customization delivery and presenting impactful value propositions to customer leadership. Your responsibilities will also include identifying product feature gaps, uncovering new requirements, brainstorming novel application domains and product areas, and educating the tech industry on advanced testing techniques for large-scale applications.Every day will bring unique challenges—one day you might be onsite with a customer, resolving a critical bug and presenting findings to their entire team; the next, you’ll collaborate with peers in the office on pioneering testing techniques or enhance your skills by exploring the latest open-source technologies.

Three UK seeks a Partnerships Executive in London to help develop and maintain key relationships with partners. The position supports the company’s goal of providing reliable connectivity and a positive customer experience. Role overview This role centers on building and nurturing strategic partnerships. The Partnerships Executive will work with internal teams and external organizations to strengthen collaboration and ensure shared objectives are met. Key responsibilities Establish and manage partnerships that align with Three UK’s business goals Maintain ongoing communication with partners to support mutual success Contribute to initiatives that enhance customer connectivity and satisfaction Location This position is based in London.

Are you passionate about the product you represent? Do you want to be part of a dynamic team dedicated to making a difference and achieving meaningful results? If you answered yes, then we want you to join us!At Popmenu, we are looking for an Account Executive to join our expanding sales team. Our mission is to transform the restaurant industry and empower businesses to thrive. You will collaborate with your regional colleagues to craft strategies and messaging that enhance brand visibility and cultivate a robust client pipeline. In this relationship-driven role, you will play a pivotal part in expanding our client portfolio across both new and established markets, driving growth for both Popmenu and the restaurant sector. Our Account Executives are experts in prospecting, adept at communicating the long-term ROI of our restaurant technology, and are genuinely excited about our mission. Our sales team is not just here to sell; Popmenu is a true partner for restaurants, equipping owners and operators with the technological tools they need to succeed well into the future. About Us:Popmenu is an innovative restaurant technology company that is changing how restaurants attract, engage, and serve their customers. Established in 2016, we now support approximately 12,000 locations worldwide, offering a unique menu experience that converts browsers into customers while consolidating multiple marketing tools into one cohesive platform.We are committed to empowering the hospitality industry with solutions that simplify the challenges of restaurant growth, making it smarter and more profitable. We are actively working to expand our footprint across the UK.As an Account Executive, you will be responsible for acquiring new business and driving revenue growth within a designated UK territory. This role emphasizes outbound prospecting, relationship building, and managing the complete sales cycle from initiation to closure. You will work closely with Sales Leadership and Client Success to ensure that restaurants experience immediate value from Popmenu.Key Responsibilities:Manage and cultivate a territory of restaurant and hospitality prospects across North or West London.Generate new business through a combination of outbound prospecting and responding to inbound leads.Navigate the entire sales cycle: from discovery and personalized demonstrations to proposal development and deal closure.Consistently meet or exceed monthly and quarterly revenue goals.Build multi-threaded relationships within client accounts to ensure ongoing success.

Role overview Antithesis is seeking a Senior or Staff Engineer in London, UK to focus on Hegel. The team values creative problem-solving and technical depth, with engineers regularly exchanging ideas and expertise to drive projects forward. Collaboration is a core part of the work culture. What you will do Tackle complex engineering challenges involving Hegel Support both new and ongoing projects that influence the team’s direction Work closely with colleagues to develop practical solutions Requirements Previous experience at a senior or staff engineering level Keen interest in working with Hegel Enjoys sharing knowledge and collaborating with others Motivated to try new technical approaches Location This role is based in London, UK.

Join Dandy as an Enterprise Account Executive, where you will be instrumental in driving growth and building strong relationships with our key clients. You will leverage your experience to identify opportunities, develop strategies, and close deals that align with our innovative offerings.

Our MissionAt Planday, a part of Xero, we believe scheduling goes beyond just filling shifts; it’s about creating an environment where businesses can thrive while employees achieve the ideal work/life balance.Our innovative use of Agentic AI is set to revolutionize the way managers allocate time, enabling them to focus on what truly matters for their teams and businesses. We are committed to transforming the shift work experience into something human-centered, making work/life balance attainable for all.Since our inception in 2004, we've been headquartered in Copenhagen, Denmark, and have supported hundreds of thousands of users worldwide in crafting perfect schedules. Planday became part of the Xero family in 2021.Your RoleAs a Senior Account Executive, you will spearhead new business development by managing and expanding your territory. You will navigate complex sales processes from start to finish, gaining a deep understanding of the challenges faced by mid-market and enterprise clients while clearly demonstrating the operational value Planday brings to their organizations.Expected to work autonomously, you will take charge of pipeline creation, deal progression, and forecasting accuracy, providing insightful perspectives on how Planday generates value for its customers.ResponsibilitiesTake ownership of your territory with a focus on increasing Annual Recurring Revenue (ARR).Develop and advance your pipeline through proactive outreach and strategic account planning.Lead comprehensive sales cycles involving multiple stakeholders and extended decision-making periods.Conduct high-quality discovery sessions to identify customer challenges and articulate clear value propositions.Facilitate customer discovery, deliver customized product demonstrations, and lead negotiations to provide tailored solutions.Ensure strong pipeline management and maintain rigorous forecasting standards.Adopt a collaborative, low-ego approach to work across teams, prioritizing opportunities and enhancing execution.What We SeekDemonstrated success as a Senior Account Executive in the B2B SaaS sector.A proven track record of successfully closing new business and driving growth.

Join our dynamic team at mqreferrals as a Senior Account Executive focused on the EU and UK markets. In this pivotal role, you will leverage your extensive experience in account management to drive client success and foster lasting partnerships. Your strategic mindset and ability to navigate complex sales processes will be critical as you engage with high-profile clients and contribute to our growth objectives.

About Agicap:Founded in Lyon in 2016 by a trio of innovative French entrepreneurs, Agicap stands out as one of Europe's leading scale-ups. With a remarkable 8000+ customer base and a dedicated team of 600 professionals, we have experienced an impressive growth rate of 7x from 2021 to 2024. Recognized as part of the FT120, we celebrate the most promising startups in France.Agicap empowers CEOs and finance teams in SMBs and mid-market companies to effectively manage and forecast their cash flow, facilitating timely supplier payments and collections.With cash flow being a critical component of business success, Agicap fundamentally transforms how companies address this significant challenge.Our goal is to establish ourselves as the premier global financial management solution for SMEs and mid-market businesses around the world.Having raised €145 million since our inception, we are backed by esteemed VC firms such as AVP, Greenoaks, Partech, and BlackFin, with our latest funding round occurring in November 2024.These resources significantly enhance our capacity for product innovation, enabling us to expand our team and accelerate our international growth across Europe.We attribute our success to our passionate and dedicated teams, who are committed to creating a workplace that nurtures personal and professional growth. We are on the lookout for exceptional talent striving for excellence to join our exciting journey!Home pageCustomer StoriesOur ValuesAbout the Senior Account Executive - UK Market Role:As a Senior Account Executive focused on the UK market, you will collaborate closely with our Business Development team, Outbound SDRs, Inbound SDRs, and Partnership Managers. Your primary goal will be to drive new business by securing new clients.In this pivotal role, you will be targeted on sales growth and expanding our presence in the mid-market segment. You will be instrumental in identifying new business opportunities, fostering relationships with prospective clients, and successfully closing deals to meet your sales objectives.

About SugarAI UK Limited SugarAI UK Limited builds AI-powered CRM solutions designed to turn scattered customer and revenue data into clear, practical insights. With over two decades of experience, the company now focuses on intuitive tools that fit seamlessly into the daily work of sales and service teams. The team values ownership, quick implementation of new ideas, and a flexible work culture that trusts employees to lead and grow. Role Overview: Senior Account Executive – UK & Ireland This Senior Account Executive position covers a territory in the UK, with a focus on driving revenue growth among small and medium-sized enterprises (SMEs). The role combines in-office collaboration in London with remote work. Success in this position comes from managing a territory independently, building strong relationships with both customers and colleagues, and consistently meeting sales goals. Key Responsibilities Own the full sales cycle, from outbound prospecting to closing deals and handing over new accounts Identify, engage, and acquire high-margin, long-term customers in the SME segment Expand SugarAI’s market share within the assigned territory Work closely with internal teams to ensure a smooth customer experience Report directly to the Manager of New Business Sales What SugarAI Offers A hybrid work setup combining office time in London with remote flexibility Support for professional growth and continuous development of sales skills An environment that encourages taking initiative and implementing new ideas quickly Who Succeeds Here Experienced sales professionals comfortable managing a territory independently Strong communicators who build lasting relationships with both customers and internal teams Individuals who thrive in a growth-focused, supportive organization If shaping the future of AI-driven CRM and delivering real results motivates you, SugarAI UK Limited would like to connect.

Join our dynamic team as a Senior Account Executive at via, where you will play a pivotal role in driving client success and fostering lasting relationships. In this position, you will leverage your expertise to enhance our service offerings while collaborating with a diverse range of stakeholders. Your focus on strategic account management will contribute to our commitment to delivering exceptional value to our clients.

Faire connects independent retailers and brands through a technology-driven wholesale platform. The company’s mission is to help local businesses grow by making it easier to discover unique products and source smarter, using advanced technology and data insights. Role overview The Senior Account Executive joins the Brand Partnerships team in London, focusing on Central and Northern Europe. This position is designed for experienced sales and account management professionals who have a record of strong results. The role involves advising high-quality brands on wholesale growth, driving significant gross merchandise value (GMV), and managing a diverse portfolio on the Faire platform. Key responsibilities include identifying brands that fit Faire’s marketplace, engaging stakeholders from C-level to operations, and building lasting relationships. The position requires strategic thinking, quick sales execution, and the ability to use AI and data effectively. Requirements Proven experience in sales or account management, with a track record of top-three performance in previous roles Recognition such as President's Club or All-Stars Comfort working in a high-growth market and managing a complex portfolio What makes this role appealing Chance to build and grow a territory with strong market potential Sales environment that values adaptability and practical use of AI Sell products that empower independent retailers and support local businesses Work with a collaborative, high-achieving team

Join Our Team at Blank Street At Blank Street, we aspire to be the leading food and beverage brand of our generation. From our inception, we've aimed to transform everyday experiences through exceptional products, meticulous attention to detail, and an unwavering commitment to making each moment unforgettable. Our motivation stems from the millions of customers we serve across various cities, and we believe our potential is limitless. This journey begins with our dedicated team, whose passion brings magic to life every single day. Be Part of Something Special... We are on the lookout for a Senior Accountant who is eager to elevate Blank Street’s accounting operations with precision, structure, and a strong sense of responsibility. If you excel in detail-oriented, execution-driven environments and take pride in maintaining accurate, timely, and compliant financial records, this opportunity is tailored for you. In this role, you will manage essential accounting workflows such as month-end closing, balance sheet reconciliations, and statutory reporting, while enhancing processes that support our rapidly growing business. You will also collaborate closely with Finance, Operations, People, and external partners, serving as a key resource for accounting execution, audit assistance, supplier inquiries, and process improvements. This in-person position is based in our London office and reports directly to the UK Finance Director. Your Responsibilities Oversee UK statutory and group reporting (UK GAAP & IFRS) and intercompany accounting across international entities Generate timely, accurate, and comprehensive monthly, quarterly, and annual financial statements. Investigate, compute, and document significant judgments and estimates, including complex accounting treatments. Manage intercompany journals and reconciliations. Collaborate on period-end closing and ensure balance sheet integrity Conduct period-end closing of the general ledger, including preparing and posting journal entries and accruals. Reconcile balance sheet accounts and maintain supporting schedules. Support daily accounting operations and vendor payments Provide operational support by reviewing invoices and resolving vendor issues. Ensure timely and accurate processing of vendor and expense payments in accordance with contractual terms and internal policies. Enhance accounting policies, controls, and processes Develop and maintain comprehensive documentation for key accounting policies and procedures.

Role Overview duvo is hiring an Account Executive based in London. This role focuses on building and managing client relationships throughout the UK and supporting sales growth. The team values collaboration and aims to deliver new solutions to clients. What You Will Do Drive sales activities and support business development efforts Manage and strengthen relationships with clients across the UK Work closely with colleagues to deliver solutions that meet client needs Work Environment The team operates in a busy setting and values teamwork and fresh thinking.

WoodWing is a global software company with more than 25 years of experience supporting media organizations, publishers, and content-driven businesses. From our headquarters in the Netherlands, we work with a wide range of clients, including major newspaper groups, magazine publishers, broadcasters, and corporate content teams. Our technology sits at the heart of complex content operations for well-known brands and forward-thinking publishers. Clients rely on our expertise in managing the challenges of content orchestration, such as tight deadlines, large content volumes, and the ongoing need for efficiency. Role overview As WoodWing expands its SaaS offerings, the UK market has become a strategic priority. We are adding to our commercial team to deepen partnerships with UK media organizations and to pursue new opportunities in publishing, broadcasting, and digital content. The Senior Account Executive will focus on driving growth for our content management SaaS platform in the UK. This position centers on building and maintaining relationships with media companies, publishers, broadcasters, and other organizations that rely on content. What you will do Identify and win new business within the UK media and publishing sector Develop and manage relationships with existing clients, ensuring their ongoing success with WoodWing’s solutions Act as a consultative partner, understanding client needs and articulating the value of our SaaS platform Collaborate with a skilled team that brings deep industry knowledge and adapts quickly to changes in the media landscape Who we’re looking for Experienced sales professional with a background in media, publishing, or digital content Strong understanding of digital content workflows and SaaS solutions Comfortable engaging with senior stakeholders at media organizations Commercially focused, with a consultative approach to sales and relationship building Location This role is based in London, Greater London, United Kingdom.

Join Three UK as a Senior Counsel specializing in Regulatory Implementation, where you will play a pivotal role in navigating the complexities of telecommunications regulations. Your expertise will ensure compliance and drive strategic initiatives in regulatory matters.

About Adaptive SecurityAdaptive Security is an innovative cybersecurity startup dedicated to combating AI-driven cyber threats. Following a successful $81 million Series B funding round in December 2025, led by NVIDIA and Bain Capital Ventures, the company is backed by notable investors including Capital One Ventures, Citi Ventures, and Andreessen Horowitz (a16z). This funding round marked a significant milestone as it was NVIDIA's inaugural investment in AI cybersecurity.Founded by seasoned entrepreneurs Brian Long and Andrew Jones, who have a proven track record of building successful companies, Adaptive aims to create a robust security framework for the AI era. Their previous venture, Attentive, achieved over $500 million in annual revenue and a valuation exceeding $10 billion, while TapCommerce was acquired by Twitter. With extensive experience in scaling high-growth businesses, Adaptive is poised for success in the evolving cybersecurity landscape.Trusted by prominent banks, tech firms, and healthcare organizations, Adaptive Security provides protection against emerging threats such as deepfakes, smishing, and AI-enabled voice scams. With rapid adoption in the enterprise sector and a market opportunity exceeding $200 billion, we are just getting started.The RoleWe are seeking a dynamic and results-oriented Senior Account Executive to join our Go-To-Market (GTM) team at our London office. In this pivotal position, you will focus on acquiring large enterprise clients in the finance, healthcare, and technology sectors.You will collaborate with a dedicated Business Development Representative (BDR) to generate top-of-funnel leads and drive strategic outreach, allowing you to concentrate on advancing high-value opportunities, managing efficient sales cycles, and securing new accounts.This role is tailored for sales professionals who excel in collaborative environments and thrive on momentum. You will work closely with leadership, marketing, product, and customer success teams, participating in company events, team retreats, and industry conferences that shape our culture and go-to-market strategy. On a daily basis, you will play a crucial role in refining our sales processes, providing feedback from the field, and contributing to the development of a scalable enterprise sales engine.If you are passionate about selling a product that truly captivates prospects and are eager to help build a world-class team in one of our key hubs, this is an exceptional opportunity to make a significant impact.

About Mistral AIAt Mistral AI, we harness the transformative potential of artificial intelligence to streamline tasks, enhance creativity, and foster learning. Our innovative technology is designed to seamlessly integrate into everyday operations, enhancing productivity and efficiency.We are dedicated to democratizing access to AI with our high-performance, optimized, open-source models and solutions. Our comprehensive AI platform is tailored to meet the complex needs of enterprises, whether they operate on-premises or in cloud environments. Our flagship product, le Chat, serves as your AI assistant for both professional and personal tasks.Join our dynamic and diverse team that is passionate about the potential of AI to drive societal transformation. We thrive in competitive environments and are committed to fostering innovation through collaboration. With teams across France, the USA, the UK, Germany, and Singapore, we pride ourselves on our creativity, humility, and team spirit.Become a part of a pioneering company that is shaping the future of AI. Together, we can create impactful solutions. Discover more about our culture at https://mistral.ai/careers.Role Overview:As an Enterprise Account Executive, you will play a critical role in driving Mistral’s growth by engaging with our largest clients across various industries. You will manage the entire sales process, from initial outreach through to closing deals, collaborating closely with our implementation specialists and technical teams.Key Responsibilities:Lead Development:- Conduct strategic outreach and leverage warm introductions to engage promising enterprise clients.- Convert inbound leads into tailored agreements that maximize upselling opportunities.Value Proposition Validation:- Provide hands-on support during the Proof of Concept (POC) phase, ensuring a smooth evaluation process for clients.- Utilize successful POC results to transition evaluations into long-term, revenue-generating contracts.Deal Management & Closing:- Develop and implement strategic sales plans to drive revenue growth and achieve sales targets.