Senior Application Security Engineer

Are you ready to shape the future of data? Matillion is the company behind Maia , the AI Data Automation platform. In the AI economy, demand for data is exploding. Manual data engineering can’t keep up. Maia fixes that by combining 15 years of data expertise with agentic AI to eliminate the manual work that slows data teams down. Organisations like Cisco, DocuSign, and Slack are already using it to deliver real business impact, faster. We started in Manchester and now we’re global - with teams across the UK, US and India. We are driven, curious, energetic people who move fast, think big and hold ourselves to a high standard. We’re here to make a dent in the universe bigger than ourselves. And we’re looking for people who want to be part of it. Role Purpose Matillion is built around small development teams utilising a modern, cloud-based technology stack to deliver products. The AppSec Engineer will work in an engineering capacity to product and engineering teams to ensure security is baked into the product from the design phase creating a SecDevOps workflow. What you will be doing Design Establish and lead security champions programme across the development squads Build functional and nonfunctional requirements for the application in conjunction with the product team Input abuse case stories into the product backlog Evangelise security across the product team, ensuring security stories are prioritised against feature goals Assess SDLC security gap risks and propose remedies Consult Instruct and guide developers on how to conduct Threat Modelling during application Design Act as the single point of contact for security concerns arising from the development team providing advice on how to solve technical software issues Lead the pentesting cadence around the core application set by conducting hacking exercises Provide application code reviews against known development frameworks such as OWASP ASVS Provide input into the design of functional and non-functional security controls such as customer authentication workflows Run Security Champion sessions to keep developers aware of security developments Engineer Establish security into the CICD pipeline such as SAST/IAST/DAST Automate and build nifty security tools to test Matillion applications Integrate testing, build failures and outputs to the development team to ensure passage to production is secure Create security tests for code and assist developers in building security unit testing Support Responsive support to the development teams Analysis of logs to identify issues and provide solutions Innovation Research projects, including prototyping, to explore future opportunities Investigate new technologies Optimise the infrastructure deployment process through use of automation, in-house and open source solutions Self-Development and Growth Develop new skills by working with other members of the team Work with the Team Lead to identify training goals Lead and partake in technical discussions within the team Actively identify and complete opportunities for self-training and external training Drive the team’s process of continual improvement What we are looking for Technical / Role Specific Essential A passion and drive to succeed in Application Security Understanding of Software Development Life Cycle Desirable Security professional at heart borne from a software engineering background Experience of working with the OWASP ASVS framework Experience in Agile delivery environments Greenfield experience setting up security technologies from scratch Outgoing and able to build relationships with key stakeholders Personal Capabilities Required, e.g. skills, attitude, strengths Can do attitude, willing to take on a wide range of security issues Keeps up to date with security developments Keen to engage with the security community on a range of topics Fast learner More about Matillion We operate a flexible working culture that promotes work-life balance, with benefits including: Company Equity 30 days holiday + bank holiday 5 days paid volunteering leave Private Health Insurance Life Insurance Pension Access to mental health support Your Safety Matillion recruiters will only contact you from @matillion.com email addresses. We occasionally work with trusted recruiting partners; they will always tell you they are working on our behalf. We will never ask for money, fees, or bank details at any point in the hiring process. If something feels off, trust that instinct. Don't click any links. Go straight to matillion.com/careers to verify open roles or reach us at [email protected]. Want to know more? Don't tick every box? Apply anyway. We hire for potential, not just experience. A member of our Talent Acquisition team will be in touch. Cannot find anything suitable role right now? We still want to hear from you. Drop us a line at [email protected]. Find out more about life on #TeamGreen here . Matillion is an equal opportunity employer. We celebrate diversity and we are committed to creating an inclusive environment for all of our team. Matillion prohibits discrimination and harassment of any type. Matillion does not discriminate on the basis of race, colour, religion, age, sex, national origin, disability status, genetics, sexual orientation, gender identity or expression, or any other characteristic protected by law.