Top Python Jobs in London

Provides technical support for post-integration issues involving payment APIs, e-commerce products, software, hardware, and endpoints. Responsibilities include testing and configuring environments, troubleshooting product behavior, communicating issues to customers and internal teams, creating technical documentation and sample code, and coordinating incident responses. The role includes occasional weekend and holiday on-call coverage.

Supports Celonis Value Engineering by analyzing customer data, identifying process inefficiencies, translating business challenges into platform use cases, quantifying financial impact, and preparing executive presentations. Collaborates with customers, partners, sales teams, and decision-makers to develop proof-of-value projects and data-driven business cases. The intern presents Celonis’ AI and process intelligence capabilities while building technical, analytical, consulting, and customer-facing experience for potential transition into the Orbit Graduate Program.

Leads software engineering projects for a strategic index trading platform, designing and maintaining applications, partnering with quantitative research and trading stakeholders, and driving delivery from requirements through production support. The role emphasizes testing, operational excellence, secure development, Agile practices, platform improvement, and responsible use of AI-assisted engineering tools. Finance or investment banking experience and knowledge of commodities, indexes, or portfolio analytics are preferred.

Lead software engineering projects supporting JPMorganChase’s strategic index platform. Design, develop, test, and maintain applications; collaborate with quantitative research, trading, sales, structuring, and middle-office teams; apply Agile practices; improve platform resilience and delivery automation; govern secure AI-assisted engineering; and own work from requirements through production support.

Design, build, and maintain scalable AWS infrastructure and developer tooling. Enable teams to own systems, support CI/CD, observability, containers, on-call/incident management, and collaborate with SRE/security to ensure resilient, secure services.

Entry-level technical graduate role for recent or upcoming STEM graduates. Responsibilities include completing product and process training, supporting technical team projects, developing technical and workplace skills, and progressing toward greater project responsibility. Candidates should have coding experience in languages such as Java, C, C++, JavaScript, AngularJS, JSON, or Python, plus technical curiosity, creativity, adaptability, and a collaborative mindset. The role is a nine-month, full-time contract based in Windsor or Edinburgh, with potential for permanent employment.

Develops, tests, troubleshoots, and maintains secure, scalable software components within an agile engineering team. Responsibilities include writing Python code, analyzing data, supporting system design, applying SDLC practices, improving automation with authorized AI coding tools, and considering upstream and downstream system impacts. The role requires software development experience, database querying knowledge, testing, operational stability, CI/CD, application resiliency, and secure coding practices.

Conduct real-time security monitoring, alert analysis, incident response, malware analysis, and remote remediation across Windows, Mac, and Linux environments. Develop detection and response processes, communicate findings to customers, provide technical escalation and mentorship, oversee analyst quality, manage programs or teams, and contribute to security thought leadership and process improvements.

Monitor and analyze security alerts, investigate and respond to incidents across Windows, macOS, and Linux, perform malware and forensic analysis, remotely remediate threats, and improve detection and response processes. The analyst communicates findings to customers, mentors junior analysts, provides quality oversight, manages teams or programs, serves as a technical escalation point, and contributes to security thought leadership and process development.

Monitor and analyze security alerts, investigate and respond to incidents across Windows, macOS, and Linux, perform malware and forensic analysis, remotely remediate threats, improve detection and response processes, and communicate findings to customers. The role also involves developing security expertise, contributing to public thought leadership, and using AI technologies to improve decision-making and workflows.

Leads independent price verification and valuation control for Rates and FX derivatives. Oversees market data validation, pricing models, valuation adjustments, prudent valuation, fair value hierarchy, risk analytics, reporting, audits, regulatory compliance, governance, automation, and stakeholder challenge. Partners with Trading, Risk, Quantitative Analytics, Finance, Product Control, and Technology teams while mentoring junior controllers and supporting strategic initiatives.

Provides technical support and customer advocacy for complex SaaS and cloud environments. Investigates incidents, leads escalations and outage bridges, develops automation and monitoring solutions, supports onboarding and operational readiness, analyzes service performance, contributes to product improvements, and mentors junior team members. Requires participation in a 24/7 on-call rotation and effective communication with technical and non-technical stakeholders.

Leads OT security monitoring and triage operations, investigates suspicious activity across industrial networks, validates detections, and escalates findings to incident responders and threat hunters. Maintains the Dragos Platform for customers, including asset classification, vulnerability management, detection tuning, and hardening recommendations. Produces incident reports, mentors analysts, collaborates across cybersecurity teams, and develops expertise in ICS protocols, adversary tactics, and industrial threat intelligence. The role includes shift-based coverage and occasional weekend or on-call work.

Leads data science initiatives from conception through deployment, developing statistical models and machine learning algorithms for trading intelligence. Collaborates with cross-functional teams to productionize solutions, supports data-driven trading strategies, and contributes to trading automation design, development, maintenance, and testing. Communicates insights to stakeholders, mentors junior data scientists, and helps solve complex business problems using large datasets.

Lead security incident response and digital forensic investigations, act as Incident Commander, monitor and analyze security events, build scripts and automated workflows (Python), use SIEM and cloud (AWS/GCP) tooling, mentor engineers, coordinate cross-team remediation, participate in on-call rota aligned to UK/EMEA hours.

Leads the design and operation of highly available, scalable, and observable production infrastructure. Defines SLOs, error budgets, and reliability targets; drives incident response, root-cause analysis, and postmortems; develops automation and deployment tooling; champions monitoring and observability; evaluates platform technologies; and mentors engineers. The role also applies secure AI-assisted engineering practices to improve incident triage, testing, and delivery workflows.

Build and maintain production reliability testing infrastructure and availability reporting. Define and measure SLIs/SLOs (correctness, availability, latency) for large-scale distributed systems. Collaborate with engineering, SRE, and product teams to instrument systems, surface reliability metrics, and drive improvements. Communicate findings and help teams implement reliability plans.

Design and implement secure enterprise architectures across cloud, hybrid, and on-premise environments for financial institutions. Responsibilities include security strategy, threat modeling, risk assessments, remediation, DevSecOps enablement, Zero Trust architecture, regulatory alignment, AI security governance, mentoring, and security awareness. The role also requires collaboration across technical and business teams, responsible use of AI-enabled security tools, and hands-on experience with IAM, endpoint, application, network, SIEM, and firewall technologies.

Lead product analytics for risk controls and regulatory compliance across Wise products. Build risk data infrastructure, control-performance metrics, and control-efficiency frameworks. Analyze risk reduction versus growth impact, support control testing, and partner with product, engineering, compliance, product risk, and financial crime teams. Use data to identify regional risk drivers, monitor local typologies, and influence product decisions. The role requires advanced analytics, stakeholder management, and strong knowledge of banking or financial products.

Leads security engineering initiatives across cloud and on-premise environments. Designs enterprise security controls, embeds SAST, SCA, DAST, and container scanning into CI/CD pipelines, conducts vulnerability assessments and security audits, develops security standards and data protection strategies, and promotes secure SDLC practices. The role also involves security automation, responsible AI-enabled workflows, Zero Trust implementation, mentoring, and collaboration with engineering and client teams.

Lead enterprise security engineering across cloud and on-premise environments. Design security controls, integrate SAST, SCA, DAST, and container scanning into CI/CD pipelines, conduct vulnerability assessments and audits, develop security standards and data protection strategies, and promote secure development practices. The role also involves responsible use of AI-enabled security workflows, human review, mentoring, and collaboration with engineering and financial-services clients.

Leads an AI Controls Enablement team developing, evaluating, and scaling automated controls across Asset and Wealth Management. Translates AI behavior and risks into actionable control findings, oversees tool submissions, conducts simulations and red-team exercises, establishes governance standards, leads the AI Controls Council, and reports progress and impact to senior leadership. Partners with Controls, Technology, and business stakeholders to deliver compliant, sustainable AI solutions.

Lead global deposit pricing strategy and analytics across multi-currency wealth management products. Build data assets, pipelines, models, dashboards, and executive reporting; analyze large datasets and macroeconomic trends to recommend pricing actions. Lead monthly pricing forums, partner across business lines, improve scalable analytics, and coach junior team members.

Leads software engineering for an AI/ML data platform, designing, developing, testing, troubleshooting, and operating secure, scalable Python applications in containerized cloud-native environments. Partners with product and data teams, promotes responsible AI-assisted development, automates recurring remediation, evaluates technology solutions, and mentors junior engineers.

Develop and support secure, scalable software for AI/ML data platforms. Responsibilities include Python architecture and development, cloud-native and containerized application delivery, code review, testing, troubleshooting, operational stability, and automation of recurring remediation. The role also promotes validated AI-assisted engineering practices and collaborates with product managers and data strategy teams. Preferred experience includes graph databases such as AWS Neptune and generative AI engineering pipelines.