ION

About the Company

We're visionary innovators who are delivering mission-critical trading and workflow automation software to financial institutions, corporations, central banks, and governments. By combining our passion for automation with a strategic view on the industries we serve, we design solutions that improve decision-making, simplify complex processes, and empower people. Simply put, we help our customers do more, faster and better than before. We believe our investments in research and development are shaping the future of automation and enabling our customers to transform their business. And we embrace the power of community, working with each other and with our customers to succeed through a positive culture of continuous improvement.

Listed Jobs

Company Name

ION

Job Title

Markets Product Security Engineer

Job Description

**Job Title** Markets Product Security Engineer **Role Summary** Drive security and compliance for product development in a regulated financial services environment. Serve as the primary security advisor throughout the product lifecycle, integrating threat intelligence, risk assessments, and industry standards to strengthen platform security posture. **Expectations** - Align security strategy, design, and controls with product road‑map. - Provide transparent reporting of product control performance and risk to leadership. - Conduct threat modelling and design reviews to ensure compliance with NIST, ISO, GDPR, DORA, and other applicable regulations. **Key Responsibilities** - Monitor security events, emerging threats, and dependencies for assigned product lines. - Act as liaison between CSIRT and product engineering for incident response. - Deliver threat modelling, hunting, and vulnerability assessments; recommend control mitigations. - Participate in architecture and design reviews, ensuring adherence to security strategy and best practices. - Stay current with industry trends, regulatory updates, and security frameworks (CIS, CSF). - Engineer control solutions where gaps exist. - Provide security expertise during incident and problem management. - Produce threat intelligence briefings and other security documentation. - Respond to on‑call and ad‑hoc security guidance requests. **Required Skills** - **Domain Knowledge**: Experience in financial services or other heavily regulated sectors; familiarity with information security governance, compliance, and regulatory frameworks (NIST, ISO, GDPR, DORA, NIS). - **Technical Proficiency**: Understanding of IT systems, network infrastructure, data architecture, cloud security, CIS, CSF. - **Security Tooling**: SIEMs, vulnerability scanners, firewalls, EDR. - **Scripting**: Python, BASH, PowerShell. - **Incident Management**: Detection, response, recovery of escalated incidents; backlog and lessons‑learned management. - **Risk Assessment**: Conduct comprehensive security risk assessments and post‑event analyses. - **Communication**: Translate complex security issues to technical and non‑technical audiences. - **Professional Traits**: Independent work, task prioritization, adaptability, composure under pressure, confidentiality handling. **Required Education & Certifications** - Bachelor’s degree in Computer Science, Information Technology, Cybersecurity, or related field (or equivalent experience). - Preferred certifications: GCIH, CSEC, CSSLP, CISSP, CASP+.

London, United kingdom

On site

30-10-2025

Company Name

ION

Job Title

Platform Security Lead

Job Description

**Job Title** Platform Security Lead **Role Summary** Spearhead the design, implementation, and management of end‑to‑end security controls across on‑premises infrastructure and internal platforms. Oversee threat detection, incident response, and vulnerability management while ensuring secure-by‑design principles. Act as a technical leader and operational responder working closely with product, infrastructure, and security operations teams. **Expectations** - Demonstrate strong communication skills and collaborative mindset. - Drive career advancement within a focused security team. - Apply expertise from prior security architecture or operations roles. **Key Responsibilities** - Serve as senior incident responder: contain, investigate, and remediate emerging threats. - Conduct root‑cause analysis and forensic investigations. - Expand logging and monitoring to enhance system visibility. - Maintain and test incident‑response runbooks, containment strategies, and escalation protocols. - Lead end‑to‑end vulnerability management (discovery to remediation). - Support security‑architecture reviews to align with best practices. - Research current threats, tactics, techniques, and vulnerabilities; assess impact. - Perform proactive threat hunting and manage security‑alert triage. - Develop and document standard operating procedures for operations and architecture activities. **Required Skills** - 7+ years in Information Security or Security Architecture. - Programming/scripting: Python, PowerShell, Bash. - Deep knowledge of Windows/Linux OS. - Familiarity with endpoint security, SIEM, DLP, SWG, CASB, UEBA, IDS/IPS, firewalls, IAM/PIM/PAM, vulnerability management, MDM. - Network security concepts, protocols, and best practices. - Cryptography fundamentals and data‑security controls. - Forensic investigation techniques. - Strong problem‑solving, detail orientation, and quality focus. - Excellent written and verbal communication. - Ability to work independently and manage multiple priorities. **Required Education & Certifications** - Degree/diploma or equivalent experience in a technology‑related field. - Desired certifications: PenTest+, Security+, OSCP, CCSP, CEH, GCIH, GMON.

London, United kingdom

On site

Senior

23-11-2025

Company Name

ION

Job Title

Senior Software Engineer, Italy

Job Description

**Job Title** Senior Software Engineer **Role Summary** Lead the design, implementation, and optimization of complex software solutions in a high‑performance, multi‑disciplinary environment. Mentor junior engineers, drive technical quality, and collaborate across teams to deliver robust, scalable systems. **Expectations** - Proficiency in multiple programming paradigms (object‑oriented, concurrent, functional, asynchronous). - Strong knowledge of Java, C++, .NET, JavaScript, or TypeScript ecosystems. - Experience with ATDD/TDD, CI/CD pipelines, Git, Maven, Jenkins, Nexus, Docker, AWS, and IDEs (Eclipse, VS Code). - Minimum 3 years of senior software engineering in demanding contexts. - Ability to handle complex problem domains, translate functional requirements into technical solutions, and manage cross‑functional collaboration. **Key Responsibilities** 1. Design, code, test, and debug software components. 2. Enhance performance and maintainability of existing codebases. 3. Provide technical guidance and training to fellow engineers. 4. Oversee migration, upgrades, and component integrations. 5. Evaluate and recommend new technologies to boost productivity. 6. Lead technical decision‑making for projects and supervise project execution. 7. Investigate and resolve software‑related incidents, ensuring optimal operation. 8. Participate in regular team meetings, contributing ideas and solutions. **Required Skills** - Programming paradigms: object‑oriented, concurrent, functional, asynchronous. - Languages: Java, C++, .NET, JavaScript, TypeScript. - Testing: ATDD, TDD. - CI/CD: Git, Maven, Jenkins, Nexus, Docker, AWS. - IDEs: Eclipse, Visual Studio Code. - Strong analytical and problem‑solving abilities. - Excellent communication and mentorship capabilities. **Required Education & Certifications** - Bachelor’s, Master’s, or PhD in Computer Engineering, Computer Science, or related STEM disciplines. - Preferred certifications in Java, C++, .NET, or cloud platforms (e.g., AWS).

Any-martin-rieux, France

Hybrid

Senior

26-11-2025

Company Name

ION

Job Title

Graduate Software Developer, 2026 Leadership Development Program, Woking

Job Description

**Job title** Graduate Software Developer – 2026 Leadership Development Program **Role Summary** Graduate Software Developer participates in a 36‑month Leadership Development Program that includes three 12‑month rotations across the product lifecycle. The role focuses on Agile end‑to‑end development for large financial institutions, delivering code, testing, continuous integration, and architecture design for complex, distributed finance systems. **Expactations** - Deliver high‑quality software within Agile sprint schedules. - Rapidly learn new domains (fixed income, FX, derivatives, treasury automation). - Transition into a specialist track after rotation period. **Key Responsibilities** - Analyze business requirements and propose technical solutions. - Design architecture using modern software engineering patterns. - Write, test, and integrate code in languages such as Java, C++, or Python. - Participate in continuous integration/delivery pipelines (CI/CD). - Automate complex business workflows to improve efficiency. - Resolve technical and business issues and communicate solutions to internal teams and external clients. **Required Skills** - Hands‑on programming experience (Java, C++, Python, or equivalent). - Familiarity with Agile methodologies, version control (Git), and CI/CD. - Strong analytical and problem‑solving abilities. - Effective verbal and written communication, with ability to explain technical concepts to non‑technical stakeholders. - Self‑motivated, proactive attitude, and continuous learning mindset. **Required Education & Certifications** - Expected to graduate in 2026 with a Bachelor's or Master’s degree in Computer Science, Data Science, Quantitative Finance, or related STEM field. - Minimum 2:1 or higher undergraduate GPA (or equivalent). - Demonstrated programming experience through coursework, projects, or professional work.

Woking, United kingdom

On site

Junior

29-12-2025