Senior Backend Engineer

OverviewwatchTowr is the Preemptive Exposure Management capability trusted by Fortune 500 companies and critical infrastructure providers.By combining proactive threat intelligence, real attacker telemetry, and automated red teaming, watchTowr continuously identifies and validates real exposure - so security teams can outrun real-world threats.When exploitation happens in hours, watchTowr delivers what no one else can: time to respond.We are a global team of operators, researchers, and engineers who have spent years thinking like attackers - and we are now building the technology to stop them. Our work is recognised across the industry, with original vulnerability research from watchTowr Labs and innovations like Instinct and Attacker Eye shaping the future of cybersecurity.Backed by $29M in funding, recognised by Gartner, and scaling fast across the globe, we are in a high-growth phase of our journey. We are a young, high-energy, and research-driven team, obsessed with building world-class technology - and we want exceptional people to join us.RoleBut what’s the role?We’re looking for a Senior Backend Engineer with a strong foundation in backend architecture and data infrastructure to help us build and scale the core systems that power our offensive security platform.You'll be part of a high-impact team working to help some of the world’s largest enterprises understand their real-time security exposure. Your work will directly shape how our platform ingests, processes, and serves critical vulnerability data at scale.ResponsibilitiesDesign, build, and maintain backend services and data pipelines that support our backend system which powers our cybersecurity platform - the platform we use to identify vulnerabilities in large enterprisesArchitect scalable microservices and APIs to handle large volumes of data relating to millions of assets belonging to our clients and how they can be compromisedWork closely with frontend engineers and product teams to integrate backend systems with the user interface and reporting layersContinuously improve our systems, from deployment to monitoring, as we scale rapidly.TechnologiesBackend: FastAPI, AirflowDatabase: Postgres, MongoDBMessage Queues: KafkaIdeal ExperienceIdeally, you should have 5 or more years of experience:Strong experience designing and maintaining mission-critical backend applications using microservices architectureProficiency in working with both relational (e.g. Postgres) and non-relational (e.g. MongoDB) databasesFamiliarity with event-driven architectures, event sourcing, and managing asynchronous data processing at scaleComfortable writing clean, testable code and applying automated testing practicesExperience working with data workflows and asynchronous task queues (e.g. Kafka, Airflow, etc)Demonstrated ability to thrive in fast-paced startup environments, showing a strong sense of ownership and initiativeA can-do attitude with the willingness to take on ambiguous challenges, wear multiple hats, and drive projects forward independentlyBonus ExperienceIt’ll also be awesome if you:Experience working with large-scale data processing or streaming systems, especially for security analysisFamiliarity with data engineering tasks like building ETL pipelines and schema versioningExposure to DevOps practices and CI/CD tooling for automated deployment and monitoringFamiliarity in Cloud-based services & able to leverage Cloud-based services as part of service deploymentsPrior work in an Agile, DevOps-driven engineering culture.What’s in it for me?Competitive compensation - we believe that hard work, skills and ambition should be fairly compensated.Meaningful role in a company - You will be a key and early contributor to a fast-growing cybersecurity business that helps protect some of the world's largest enterprises.The best tools and powerful kit - we enable you with the tools to effectively fulfil your role.Endless opportunities – we are in a high-growth phase of our journey, and plan to promote from within as we scale.Work with cyber security experts – we are solving cutting-edge industry-wide cyber security challenges with some of the world’s most advanced organisations.Equal OpportunitywatchTowr is proud to be an Equal Opportunity EmployerAt watchTowr, we’re dedicated to fostering an inclusive, respectful, and diverse environment where every individual is recognised for their talent and potential. Our hiring decisions are guided by your capabilities, experience, and what you bring to the role - not by unrelated personal attributes.We have a zero-tolerance approach to any form of discrimination or harassment. This includes - but isn’t limited to - discrimination based on race, ethnicity, religion, colour, nationality, sex, sexual orientation, gender identity or expression, age, disability, pregnancy or parental status, veteran status, or any other characteristic protected by law.We actively encourage people from all backgrounds to apply. Even if you don’t tick every box in the job description, we’d still love to hear from you.Job DetailsSeniority level: Not ApplicableEmployment type: OtherJob function: Engineering and Information TechnologyIndustries: Computer and Network SecurityNoteReferrals increase your chances of interviewing at watchTowr. 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