Founding Platform Security Engineer jobs in London – Browse 2,623 openings on RoboApply Jobs

Founding Platform Security Engineer jobs in London

Open roles matching “Founding Platform Security Engineer” with location signals for London. 2,623 active listings on RoboApply Jobs.

2,623 jobs found

1 - 20 of 2,623 Jobs
Apply
company
Full-time|On-site|London Office

Join Gradient Labs in revolutionizing customer experiences and operational efficiency in the financial services sector.Founded in 2023, Gradient Labs has rapidly evolved from an innovative concept to a dynamic team serving well-known clients. Our unique AI operations agent is the first of its kind tailored specifically for financial services, adept at addressing high-stakes customer inquiries with precision and safety. This all-encompassing agent provides businesses with the visibility and control needed for reliable outcomes across their operations.Our team comprises talented individuals from prestigious companies such as Monzo, Pleo, and Google. If you are eager to tackle complex challenges in AI and contribute to the future of customer operations and experience, we invite you to connect with us. Your Role and ImpactWe are in search of our inaugural Founding Platform & Security Engineer, a dedicated and skilled professional to join our expanding team. In this pivotal greenfield position, you will play a crucial role in designing and securing our advanced AI agent platform and its infrastructure from the ground up.As you report directly to the CTO, you will establish the technical vision for Platform & Security while working closely with AI, engineering, and product teams to effectively scale and deploy our platform across various cloud environments. This role offers an exciting opportunity to leverage your extensive security expertise, particularly within the AI domain, to create enterprise-grade security systems in a fast-paced and evolving landscape.Ownership of Scaling Deployments: Lead the charge on application, cloud, network, and AI agent scalability across our platform, driving the global deployment of our agent across multiple cloud environments.Architect & Implement Security Framework: Design and establish a robust security framework that encompasses customer-facing products, cloud infrastructure (AWS, Azure, or GCP), and enterprise integration points, safeguarding against both traditional and modern AI-enabled threats.Integrate Security within AI: Collaborate with our AI engineering teams to embed security best practices throughout model training, evaluation, and deployment processes, enabling innovation while maintaining safety and responsibility.Automation & Tooling: Enhance security operations through the integration of tools into CI/CD pipelines, ensuring efficiency and effectiveness.

Nov 27, 2025
Apply
company
Full-time|On-site|London

About WexlerWexler is at the forefront of developing an unparalleled AI system tailored for litigation. Collaborating with some of the largest law firms globally, we assist them in navigating their most intricate cases, identifying winning strategies, and distilling clarity from the often overwhelming array of documents and facts. Based in London, we are a rapidly expanding legal AI company, trusted by firms like Clifford Chance, HSFKramer, Goodwin, and Addleshaw Goddard to uncover critical insights that can significantly impact case outcomes.Supported by a $5.3M Seed funding from Pear VC, Seedcamp, The LegalTechFund, and several prominent industry angels, we are committed to building a comprehensive AI platform designed to manage, resolve, and preempt legal disputes for enterprise law firms and Fortune 500 companies. Our growth trajectory of 10x year-over-year and the continuous acquisition of prestigious firms speaks to our success. Our innovative system efficiently extracts objective, cross-referenced facts from millions of documents, empowering litigators to secure more victories while conserving invaluable time. This ensures that every client receives the exceptional representation they rightfully deserve.At Wexler, we understand that AI is revolutionizing the legal landscape, yet many existing tools tend to focus on contract law or serve as generalist copilots. We pride ourselves on being the leading generative AI platform specifically crafted for the intricacies of litigation, a fact underscored by our remarkable growth.About the RoleAs our inaugural dedicated security engineer, you will play a pivotal role in establishing and managing the bedrock of Wexler's security framework, encompassing infrastructure, product, and compliance. Your collaboration with engineering, operations, and leadership teams will be essential to not only enhance our security measures but also to provide tangible proof of our commitment to security for our clients.Responsibilities:Take charge of current security tools and introduce new solutions (e.g., endpoint protection, MDM, access controls), ensuring their effective configuration, maintenance, and scalability as the organization expands.Integrate secure-by-design practices throughout the development lifecycle, from secure coding and threat modeling to design reviews and CI/CD hardening.Monitor systems for any anomalies and proactively design detection and prevention mechanisms.Ensure that infrastructure and applications comply with accepted industry standards (e.g., OWASP Top 10, AWS Well-Architected Framework).Conduct and lead risk assessments, including evaluations of third-party vendors and internal processes.

Dec 9, 2025
Apply
companytracebit logo
Full-time|On-site|London

Join us at tracebit, where we empower security teams to swiftly and accurately identify intrusions within their cloud environments. Our innovative product utilizes deceptive canaries—virtual tripwires designed to mislead potential attackers.This is an exhilarating moment to become a part of our founding team:We are supported by top-tier investors including Accel and Tapestry.Our growth trajectory is remarkable; we doubled our Annual Recurring Revenue (ARR) last quarter and have secured major clients like Riot Games, Synthesia, Docker, Coveo, and Snyk, along with several others who we can’t publicly disclose.As one of the most promising startups in the UK, we have received outstanding market feedback and are poised for explosive expansion.We are frequently featured in esteemed startup rankings...Creandum’s Euro Seed Top 50 List, Sifted’s 2025 London Startups To Watch, Notion’s Cloud Top 100, and more.Our research has recently played a crucial role in resolving a critical security vulnerability in Google’s Gemini CLI.Having started with just 2 employees 18 months ago, we have expanded to 18 and plan to triple our team in the coming year.We are addressing substantial challenges for discerning organizations. Our streamlined tech stack empowers us to process billions of events weekly while maintaining robust security.

Sep 2, 2025
Apply
companyIsomorphic Labs logo
Full-time|On-site|London

Isomorphic Labs is looking for a Platform Security Engineer based in London. The focus of this role is to safeguard the company’s technology infrastructure and help secure its main platforms. Key responsibilities Apply security controls and measures throughout company systems and services Carry out vulnerability assessments to find and address potential risks Collaborate with colleagues from various disciplines to strengthen platform security This position centers on practical security work, hands-on risk assessment, and cross-team collaboration to keep Isomorphic Labs' platforms protected.

Apr 22, 2026
Apply
companyCorgi logo
Full-time|£75K/yr - £140K/yr|Hybrid|London, England, United Kingdom

Corgi is a licensed insurance carrier designed for tech startups, powered by AI. With $108M in funding and regulatory approval, Corgi is expanding into the UK and EU markets. The platform is built on Django, integrates Stripe for payments, and features AI-driven underwriting. Role overview Corgi is searching for a Founding Software Engineer based in London. This position calls for someone who brings ideas to life, taking projects from concept to live product. Candidates with a track record of side projects, shipped products, or anything that has gained real user engagement will stand out. This is more than a senior engineer role by title; it’s about building and launching real solutions. What you will do Independently build and deploy products from the ground up Work across the technology stack, handling new challenges as they arise Deliver results quickly, often within hours or days Contribute to a culture that values shipping and iterating frequently Participate in open and transparent decision-making Requirements Demonstrated experience developing and launching projects independently Comfort working across a broad technology stack Strong, experience-backed opinions with a willingness to consider better ideas Ambition and energy suited to a rapid startup pace Focus on delivering results rather than relying on job titles Work culture Decisions made quickly, even with incomplete information Frequent releases and continuous improvements Short review cycles with a focus on shipping and iterating Consistent performance expected beyond just launch periods Transparent, public-first communication style Healthy internal competition that encourages growth This is a hands-on build role. Consistent effort is expected; coasting is not an option. Behaviors that do not fit Engaging in workplace politics, gossip, or avoiding accountability Taking feedback personally instead of using it for improvement Introducing unnecessary bureaucracy rather than simplifying processes Failing to deliver after making commitments How to apply Send links to your GitHub, personal website, or live projects you have built and launched Resumes are not accepted Email: sergio@corgi.com If you cannot show shipped work, this role is not a fit Compensation and location Role based in London (on-site or hybrid) Salary range: £75,000 to £140,000, plus equity options Compensation depends on demonstrated ability to ship, not job title

Apr 27, 2026
Apply
companymlabs logo
Full-time|On-site|London, England, United Kingdom

Backend Platform EngineerWe are looking for a talented Platform Engineer to join our elite team at mlabs, a pioneering software development firm leading the charge in the fintech and digital asset industries. Our organization is a major contributor to one of the world's largest and most dynamic crypto social networks, having generated upwards of $600 million in revenue since early 2024. At the crossroads of high-scale social coordination and decentralized finance, we are committed to revolutionizing the future infrastructure.This role is crucial to maintaining the security, scalability, and integrity of our platform, which is attracting global attention. The ideal candidate will enhance our backend engineering and infrastructure security, executing robust controls across a complex cloud and blockchain ecosystem.Key Responsibilities:Pipeline Security: Develop and maintain a secure CI/CD pipeline, integrating automated security checks throughout the development lifecycle.Infrastructure as Code (IaC): Design and implement infrastructure following IaC principles while adhering to security best practices.Security Automation: Automate security scanning and monitoring of our cloud and blockchain infrastructure for real-time threat detection and mitigation.Container Security: Establish and manage advanced security protocols for high-throughput containerized environments.Observability & Metrics: Create and sustain comprehensive security dashboards to monitor and report on our security posture.Cross-Functional Collaboration: Work alongside development teams to address security issues and enhance code-level security standards.Secrets & Key Management: Design and implement sophisticated solutions for secrets management and cryptographic key handling.Configuration Baselines: Set and enforce secure configuration baselines across our entire cloud infrastructure.

Mar 25, 2026
Apply
companyAnaplan logo
Full-time|On-site|London, United Kingdom

Join Anaplan, a pioneering team dedicated to enhancing business decision-making through our innovative AI-powered scenario planning and analysis platform. Our mission is to empower our customers to surpass their competitors and thrive in the marketplace.At Anaplan, we share a strong commitment to our customers' success and foster a vibrant Winning Culture.Our clientele includes household names from the Fortune 50, such as Coca-Cola, LinkedIn, Adobe, LVMH, and Bayer, among over 2,400 global companies that trust our exceptional platform.Our Winning Culture is the driving force behind our teams of innovators. We celebrate diverse thoughts and ideas, embrace leadership at every level, strive for ambitious goals, and take pride in celebrating our achievements, both large and small.You’ll be inspired, connected, developed, and rewarded here, guided by our principles of strategic focus, values-driven approach, and disciplined execution. We welcome everything that makes you unique; come and help us shape the future together!Anaplan is on the lookout for an enthusiastic PRESALES PLATFORM SECURITY ARCHITECT to play a crucial role in our PRE-SALES team supporting the EMEA region. Bring your energy and join our momentum!This role presents an exciting opportunity to be part of a high-impact pre-sales team where you will lead technical discussions with prospective clients, navigating topics like platform architecture, security, data integration, and compliance. As a trusted advisor, you will facilitate IT approvals and support the wider sales process.You will collaborate cross-functionally with Account Executives, Product Management, and Security teams to align technical solutions with customer needs.

Mar 4, 2026
Apply
companyCorgi logo
Full-time|£75K/yr - £140K/yr|Hybrid|London, England, United Kingdom

Corgi provides insurance for technology startups, using AI to streamline underwriting and operations. With $108 million in funding and full regulatory approval as a licensed carrier, Corgi is expanding into the UK and EU. The platform uses Django, integrates Stripe for payments, and relies on AI-driven processes at every stage. Role overview This founding engineer position is based in London and focuses on building and shipping real products. Joining at an early stage, the role involves shaping both the product and company culture as Corgi grows in new markets. The work is hands-on, with a strong emphasis on delivering live solutions rather than just planning or design. Requirements Track record of independently building and launching projects with real user engagement and polished outcomes Comfort working at a daily pace, prioritizing progress over prolonged planning Ability to work across the technology stack and solve problems directly Strong opinions, balanced by openness to better solutions Humble attitude and genuine drive to build and improve How Corgi works Decisions are made quickly, without waiting for perfect answers Products and improvements are released regularly, not just quarterly Ship-and-iterate mindset keeps momentum high and avoids bureaucracy Consistent intensity during product pushes, with minimal slowdowns Decisions are made transparently High performers help raise the bar for the team This is not a passive or comfortable position. The role suits those who want to build and take ownership. Behaviors that lead to removal Engaging in office politics, avoiding responsibility, or gossiping Treating direct feedback as a personal attack Adding unnecessary complexity instead of improving efficiency Missing deadlines after making commitments How to apply Instead of a resume, send links to your work, such as: GitHub repositories Personal website Live projects Shipped applications Email applications to: sergio@corgi.com Candidates must have demonstrable projects to share. If not, this role is not a fit. Location This position is based in London. On-site or hybrid work options are available. Compensation Salary ranges from £75,000 to £140,000, plus equity. The range reflects a focus on real shipping ability over job titles.

Apr 27, 2026
Apply
companyMarloo logo
Full-time|On-site|London

Your RoleAs a Founding Engineer at Marloo in London, you will play a pivotal role in shaping the future of our product. Your responsibilities will include:End-to-End Full-Stack DevelopmentOwn and develop core product features, working seamlessly from backend infrastructure to engaging frontend experiences, prioritizing rapid delivery and continuous iteration.Architectural LeadershipEstablish sustainable technical patterns and make crucial architectural decisions that align with our growth trajectory. You will be the guiding authority on our codebase and influence our engineering culture significantly.Collaborative Product DevelopmentEngage directly with the founders to convert user feedback into innovative technical solutions. Your understanding of business needs and product development will be as essential as your technical skills.AI-Driven DevelopmentUtilize AI tools daily to enhance your development processes, from architecture to debugging. We expect you to be an adept user of the latest AI development technologies.

Mar 23, 2026
Apply
companyCorgi logo
Full-time|£75K/yr - £140K/yr|Hybrid|London, England, United Kingdom

Corgi is a licensed insurance carrier focused on tech startups, using AI to simplify and speed up coverage. The company has raised $108M and is expanding across the UK and EU. The platform relies on Django, integrates Stripe for payments, and features AI-driven underwriting. Role overview This founding engineer role is based in London and centers on building and launching new products, often independently. Corgi values engineers who turn ideas into live products, rather than following detailed roadmaps. Evidence of shipped side projects, weekend builds, or products that have reached real users is highly regarded. Who succeeds here Track record of independently building and delivering real projects Comfortable working across the full technology stack Delivers results quickly, in hours or days Low-ego, motivated by results rather than titles Open to feedback and willing to adopt better ideas Thrives in a high-energy startup setting How we work Decisions are made quickly; perfection is not the goal Products and processes ship regularly, not just quarterly Iteration happens after shipping, not after long review cycles High intensity during launches, with a steady pace year-round Transparent decision-making; no closed-door policies Internal competition is encouraged to raise standards This is a hands-on role for builders who want to make things happen. Behaviors that don’t fit Office politics, gossip, or avoiding responsibility Taking direct feedback personally instead of constructively Adding unnecessary overhead instead of streamlining Missing deadlines after committing to them Application process Send links to your GitHub, personal website, live projects, or shipped products CVs are not accepted Email applications to: sergio@corgi.com Evidence of shipped work is required for consideration Location and compensation Role is based in London; on-site or hybrid arrangements available Base salary: £75,000–£140,000, plus equity Salary band reflects proven shipping ability, not job titles

Apr 27, 2026
Apply
company
Full-time|£150K/yr - £170K/yr|Hybrid|London, England, United Kingdom

Salary: £150,000 – £170,000Equity: 0.7% - 1.2%This position is in-person with flexible remote workdays.European visa sponsorship is available.About AuroraAurora is redefining the lifestyle operating system for top-performing individuals and organizations worldwide. Our clientele includes elite founders, executives, professional athletes, and families managing intricate and ongoing needs across travel, health, dining, and premium goods.Our platform is conversational, proactive, and accessible 24/7 globally, making it a vital tool for members who engage with it multiple times daily for crucial, time-sensitive decisions. The quality of our product, the soundness of our judgment, and the efficiency of our systems are instantly visible to our customers.The market for agentified premium lifestyle commerce exceeds $10 billion, with traditional concierge services often hampered by disjointed CRM systems and manual processes that lack scalability. Aurora integrates automation, AI agents, and expert human curators into a unified system, engineered for speed, precision, and impact.We have achieved remarkable early success:51% daily active users, 95% weekly active usersTransaction volume and member spending have surpassed industry benchmarks by 5x within the first three monthsBacked by Alex Macdonald, a leading figure in this domain, we have:Secured over $5 million in funding from seasoned operators and top-tier investorsDeveloped a product that boasts industry-leading engagement from paying membersAccumulated a substantial, proprietary dataset of user context (preferences, calendars, health signals) that fuels our proactive AI capabilitiesAs we scale our product and expand our member base, we are looking to grow our founding engineering team.Aurora operates from our offices in London, New York, and Los Angeles. Our engineering team primarily collaborates from our London office in Belgravia, with options for flexible remote work.

Feb 11, 2026
Apply
companyTracer logo
Full-time|On-site|London

About TracerTracer is an innovative early-stage startup that specializes in developing autonomous AI agents for production data pipelines. Backed by seasoned investors and industry leaders, we believe that AI will revolutionize production systems, becoming a key player in enterprise software over the next decade. Our team is composed of highly skilled professionals focused on delivering impactful results. Role OverviewWe are seeking a Founding AI Engineer (Staff) to join our London team. In this pivotal role, you will be responsible for designing the core architecture and launching an AI agent that generates reliable root cause analyses (RCAs) and actionable suggestions for significant alerts. While human oversight remains essential for production decisions, you will empower the agent to handle the intricacies of data management. Our Technology StackPython with LangGraph for multi-agent alert investigationsRust for high-performance systemsClickHouse for scalable event and investigation historyAWS and Terraform for self-managing infrastructureNext.js and TypeScript for an engaging front-end experience Your ResponsibilitiesAs the core architect, you will transform alerts into comprehensive investigations and RCAs. Your key tasks will include:Designing and building the primary alert investigation and RCA pipeline using PythonCreating essential systems such as alert ingestion, context enrichment, hypothesis orchestration, and reportingMaking critical architectural decisions to ensure reliability and observability from the outsetCollaborating with founders to refine and expand high-value alert typesDeveloping customer-ready integrations across the pipeline

Jan 27, 2026
Apply
company
Full-time|Remote|Remote — London, England, United Kingdom

Join weekday-1 as a Founding Software Engineer and become a key player in shaping our innovative technology solutions. As part of a dynamic startup team, you will be responsible for designing, developing, and maintaining cutting-edge software applications that will drive our vision forward.We are looking for an enthusiastic and skilled engineer who thrives in a fast-paced environment and is eager to take on new challenges. Your contributions will directly impact our success, making this an exciting opportunity for those looking to make their mark in the tech industry.

Mar 24, 2026
Apply
companyAppvia logo
Full-time|£90K/yr - £120K/yr|Hybrid|London, England, United Kingdom

Join Appvia as a Principal Azure Platform Engineer and help shape the future of cloud technology!Location: London, UK (Hybrid - typically 1-2 days per month in office)Contract: PermanentCompensation: £90,000 - 120,000 + 10% Bonus + 10% Shares + Comprehensive BenefitsAbout UsAt Appvia, we empower businesses to advance on their cloud and DevOps journey. As a top-tier provider, we leverage innovative technologies and services to facilitate seamless cloud adoption for our clients.Our goal is to enable organizations to efficiently deploy applications in the cloud. We are dedicated to constructing a robust cloud infrastructure that simplifies management and updates for platform engineering teams while providing developers with the flexibility to deploy their applications effortlessly. Our commitment to delivering value drives our passion for our clients' success.About the RoleAs the Principal Azure Platform Engineer, you will play a vital role in guiding our clients towards achieving cloud and DevOps excellence. Your expertise will be instrumental in designing and implementing scalable, resilient, and secure platforms, while aligning strategic initiatives with customer goals.This position presents an exciting opportunity to lead a team of cloud consultants, championing innovation in cloud adoption strategies and contributing to the development of Appvia's internal solutions team during a transformative phase for our organization.Interview Process - 4 StagesInitial discussion with our Talent Acquisition Manager.Technical Assessment in collaboration with the Engineering team.In-depth Technical Interview with Practice Leadership.Final Competency-focused Interview with Engineering Leadership.Important NoteTo be considered, candidates must either hold active SC or be eligible for SC clearance:Must possess a British Passport or ILR.Must have lived in the UK for at least the last 5 years.No criminal records.No financial irregularities.QualificationsAbout YouYou are passionate about emerging technologies and automation, with a proven track record in leading an Engineering Team adhering to Agile and DevOps best practices. You should be able to discuss your:Expertise in continuous integration and deployment practices.Ability to collaborate effectively with individuals at all technical levels.Understanding of industry best practices.Project Management experience.Exceptional interpersonal skills, including the ability to inspire a team towards shared objectives.ResponsibilitiesCollaborate with prospective and current clients to streamline cloud adoption.

Apr 7, 2026
Apply
companyGigs logo
Full-time|On-site|London

About Gigs Gigs builds a platform that lets tech companies add global mobile connectivity to their products. The goal: make integrating telecom as simple as integrating payments. By automating provisioning and removing telecom hurdles, Gigs helps businesses from fintechs to HR platforms offer mobile services without the usual complexity. The team numbers around 100 people, spread across the US and Europe. Gigs has raised close to $100 million from investors including Ribbit Capital, Google, and Y Combinator. The company brings together engineers and product leaders from places like Stripe, Airbnb, and Shopify, all focused on solving technical and regulatory challenges in telecommunications. Curiosity, creativity, and a drive to shape the future of telecom matter here. Gigs welcomes people who want to tackle tough problems and make an impact. Core Values Speed: Move quickly and deliver. Ambitious deadlines are the norm, and each week counts. Ownership: Spot a problem? Step up and fix it without waiting for approval. Customer Obsession: The success of customers is central to every decision. Ambiguity: Work often involves making decisions with incomplete information. Judgment and instinct matter. First Principles: Question assumptions and dig into the reasons behind how things are done. Role Overview: Senior Platform Engineer (London) This role sits at the heart of Gigs’ technical operations. Senior Platform Engineers design, build, and maintain the infrastructure and developer tools that power the company’s connectivity and payments platform. The work enables product teams to ship faster and more reliably, supporting growth at scale. The Foundation team owns the core systems every Gigs engineer depends on: CI/CD pipelines, cloud infrastructure, observability, deployment tools, and shared platform services. Taking on complex infrastructure challenges is a key part of the job, with a focus on keeping systems efficient and dependable.

Apr 20, 2026
Apply
companyAppvia logo
Full-time|£75K/yr - £90K/yr|Hybrid|London, England, United Kingdom

Join Our Dynamic Team as a Senior AWS Platform EngineerLocation: London, UK (Hybrid – typically ~1 day per week on-site)Contract Type: Permanent, Full-timeSalary Package: £75,000 – £90,000 + 10% Bonus + 10% Equity + Additional BenefitsAbout AppviaAt Appvia, we specialize in cloud and platform engineering consultancy, empowering organizations to effectively build, secure, and scale their operations in the cloud. We collaborate with both public and private sector clients to craft cutting-edge cloud platforms, integrate robust engineering practices, and accelerate software delivery.Our expertise lies in platform engineering, DevOps, automation, and cloud-native solutions, establishing a balance between developer agility, security, resilience, and governance.Role OverviewAs a Senior AWS Platform Engineer, you will play an integral role in our platform engineering projects, taking a hands-on approach in designing, building, and managing secure and scalable AWS environments. This position is perfect for an experienced engineer who thrives on tackling intricate technical challenges and collaborating closely with development teams to enhance cloud platforms and delivery pipelines. You will work within multidisciplinary teams, supporting application and platform workloads while guiding customers in adopting modern DevOps and platform engineering methodologies.Your responsibilities will include leading technical deliveries, contributing to solution design, and mentoring junior engineers through knowledge sharing.Interview Process - 4 StagesInitial discussion with Talent AcquisitionTechnical assessment paired with an Engineering team memberIn-depth technical interview with Practice LeadershipFinal competency-based interview with Engineering LeadershipImportant NoteTo be considered for this role, you must either possess an active SC clearance or be eligible for SC, which requires:British Passport or Indefinite Leave to RemainResidence in the UK for at least the last 5 yearsNo criminal convictionsNo financial irregularitiesCandidate ProfileYou are a proficient AWS engineer with a strong background in cloud-native infrastructure and DevOps, comfortable in client-facing environments and directly contributing to project delivery. You will offer:Demonstrable experience in building and operating AWS platformsA comprehensive understanding of modern CI/CD and automation practicesConfidence in collaborating with engineers, architects, and project leadsA pragmatic mindset towards enhancing reliability, security, and developer experienceKey ResponsibilitiesDesign, build, and maintain secure AWS platformsCollaborate with cross-functional teams to deliver high-quality solutionsMentor and guide junior engineersContinuously improve and optimize platform performance

Dec 24, 2025
Apply
companySaturn logo
Full-time|On-site|London

About the Role Saturn is looking for a Platform Engineer in London. This role focuses on building and improving the platforms that power our products. The work centers on designing systems that scale, run efficiently, and support a growing user base. What You Will Do Develop and optimize core platform components Work closely with other engineers to deliver reliable systems Contribute to the design of scalable solutions that handle increasing demand Team and Collaboration Platform Engineers at Saturn collaborate with a skilled engineering team. The group values practical solutions and a shared commitment to quality.

Apr 15, 2026
Apply
companyAbound logo
Full-time|On-site|London

Abound is changing how consumer lending works in the UK and beyond. By combining advanced AI with Open Banking data, the company looks at a person’s complete financial situation, not just a credit score, to make lending decisions that are fairer and more accurate. Since launch, Abound has issued over £1.3bn in loans, with a credit performance that outpaces industry averages. The company became profitable within 2.5 years and has backing from major investors, including Citi and Deutsche Bank. With over £2bn in funding, Abound is recognized as one of Europe’s fastest-growing fintechs. Role overview This Senior Security Engineer position is based in London and sits within the Platform team. The role blends DevSecOps responsibilities, serving as a bridge between product engineering and Corporate IT. As a hands-on contributor, the Senior Security Engineer critically reviews security architecture across both production and internal IT environments. During the first 6 to 12 months, the focus will be on designing and implementing next-generation cloud security architecture in AWS and GCP. The role also involves building and maturing internal SOC capabilities, particularly around detection and response. What you will do Manage Microsoft Sentinel to strengthen SIEM/SOAR capabilities Automate RBAC for identity and access management across AWS, Microsoft Entra, and internal systems Embed security controls into GitLab CI/CD pipelines, including scanning, infrastructure-as-code reviews, and automated policy enforcement Support a shift-left approach by integrating security throughout the software development lifecycle Technology stack Cloud & Compute: AWS, ECS Fargate, Aurora, Lambda, GCP Data Lake: S3, DMS, Glue Security & Identity: Microsoft Defender (XDR), Microsoft Sentinel (SIEM/SOAR), Defender for Cloud (CSPM), Microsoft 365, Entra, Intune Cloud Security Tooling: GuardDuty, Security Hub, Inspector, Security Command Center Code & Infrastructure: Terraform, GitLab CI/CD

Apr 24, 2026
Apply
companyairapps logo
Full-time|On-site|London Metropolitain Area

airapps is hiring a Security Engineer to help safeguard digital assets and infrastructure in the London Metropolitan Area. This role centers on identifying weaknesses, managing security risks, and ensuring strong security measures are in place. Key responsibilities Identify vulnerabilities throughout information systems Reduce and address security risks as they arise Implement and maintain effective security protocols Support efforts to comply with relevant industry standards Help strengthen the company’s overall security posture Location This position is based in the London Metropolitan Area.

Apr 24, 2026
Apply
company9fin logo
Full-time|On-site|London

About 9fin9fin is at the forefront of revolutionizing global debt markets with its innovative AI platform, catering to an asset class worth over $145 trillion.Debt markets are extensive and critical yet often rely on disjointed data, PDFs, and manual processes. 9fin transforms this outdated infrastructure into a cohesive platform that consolidates proprietary credit data, in-depth analysis, and streamlined workflows across international markets.Currently, 9fin empowers teams at over 300 prestigious institutions globally, including major banks, asset management firms, private equity companies, law firms, and consulting agencies. As the business rapidly scales, especially in the US, it enjoys exceptional retention rates driven by robust workflow integration.We are at a pivotal moment in our growth journey. With a validated product-market fit and strong global demand, 9fin is on track to become the leading platform for debt markets around the world.The OpportunityWe are in search of a Senior Platform Engineer with a specialization in security to join our Platform team and take charge of our security framework across both our AWS environment and software development lifecycle.This is a hands-on position focused on creating secure-by-default systems rather than enforcing rigid processes. You will be responsible for designing and implementing security guardrails, tools, and patterns that enable our engineers to operate efficiently without sacrificing security.You will collaborate closely with engineering teams across the organization, as well as our Head of IT & Information Security, to prioritize and execute the most impactful enhancements to our security posture and facilitate our ongoing SOC 2 maturity.Your Responsibilities Will Include:Designing and implementing security guardrails within our AWS multi-account environment (IAM, networking, data protection, logging).Building and maintaining policy-as-code and infrastructure-as-code (Terraform) to enforce secure defaults.Enhancing our software supply chain security (dependency scanning, build integrity, secrets management).Integrating secure development practices into our engineering workflows (CI/CD, GitHub Actions, code review patterns).Driving visibility and detection through logging, monitoring, and alerting.Partnering with engineering teams to threat model new systems and ensure secure design from the outset.

Mar 30, 2026

Sign in to browse more jobs

Create account — see all 2,623 results

Tailoring 0 resumes

We'll move completed jobs to Ready to Apply automatically.