Feel good about your work again.
Senior Software Engineer, Firefox Security
Location
Sweden
Posted
1 day ago
Salary
kr513K - kr684K / year
Seniority
Senior
Job Description
Senior Software Engineer, Firefox Security
Mozilla
• Advance Firefox's security architecture and cryptography stack: Contribute to improvements in Firefox's core security systems, with a focus on cryptographic protocols, WebPKI, and security-sensitive web APIs. Help implement and maintain security features that support the evolution of public key infrastructure on the web. • Design and implement web platform security features: Develop and ship web platform features in collaboration with teammates and the broader web community. Contribute to standards-based, secure, and interoperable implementations across Firefox. • Improve browser reliability, performance, and resource efficiency: Investigate and resolve issues impacting stability, correctness, and performance. Analyze and improve memory usage and efficiency within a complex, multi-threaded browser environment. • Collaborate on security initiatives: Partner with engineers across teams to identify, prioritize, and address security issues. Participate in debugging, root cause analysis, and implementation of effective long-term solutions. • Contribute to technical design and planning: Participate in technical discussions, design reviews, and project planning for security-related initiatives. Help evaluate tradeoffs and contribute to engineering decisions within your area of work.
Job Requirements
- Strong software engineering and security fundamentals: Experience in software engineering, with proficiency in C/C++ and a solid understanding of security principles, including cryptographic protocols and implementations.
- Experience building and maintaining complex software systems: Ability to contribute to the design, implementation, testing, and maintenance of software in large-scale or security-sensitive environments.
- Strong debugging and problem-solving skills: Expertise in diagnosing and resolving issues in multi-threaded, cross-platform native applications, including performance and memory-related challenges.
- Collaborative and effective communicator: Ability to work effectively with distributed teams, communicate technical concepts clearly, and collaborate constructively to solve problems.
- Growth mindset and willingness to learn: Demonstrated curiosity and desire to deepen expertise in browser security, cryptography, and systems programming while continuously improving engineering skills.
- Web platform and modern systems experience: Familiarity with web technologies and interest or experience in Rust. Comfortable working within large, complex, multi-language codebases.
Benefits
- Generous performance-based bonus plans to all eligible employees - we share in our success as one team
- Rich medical, dental, and vision coverage
- Generous retirement contributions with 100% immediate vesting (regardless of whether you contribute)
- Quarterly all-company wellness days where everyone takes a pause together
- Country specific holidays plus a day off for your birthday
- One-time home office stipend
- Annual professional development budget
- Quarterly well-being stipend
- Considerable paid parental leave
- Employee referral bonus program
- Other benefits (life/AD&D, disability, EAP, etc. - varies by country)
Related Guides
Related Categories
Related Job Pages
More Security Engineer Jobs
• Advance Firefox's security architecture and cryptography stack: Contribute to improvements in Firefox's core security systems, with a focus on cryptographic protocols, WebPKI, and security-sensitive web APIs. Help implement and maintain security features that support the evolution of public key infrastructure on the web. • Design and implement web platform security features: Develop and ship web platform features in collaboration with teammates and the broader web community. Contribute to standards-based, secure, and interoperable implementations across Firefox. • Improve browser reliability, performance, and resource efficiency: Investigate and resolve issues impacting stability, correctness, and performance. Analyze and improve memory usage and efficiency within a complex, multi-threaded browser environment. • Collaborate on security initiatives: Partner with engineers across teams to identify, prioritize, and address security issues. Participate in debugging, root cause analysis, and implementation of effective long-term solutions. • Contribute to technical design and planning: Participate in technical discussions, design reviews, and project planning for security-related initiatives. Help evaluate tradeoffs and contribute to engineering decisions within your area of work.
Senior Specialist, PSOC Systems & Services
Molina HealthcareMolina Healthcare is a Fortune 500 managed care company with a storied history that dates back to 1980 and the opening of a medical clinic by Dr. C. David Molina. As an employer, M
Role Description Provides senior level support for Molina Protection Services Operations Center (PSOC) enterprise applications. Responsible for executing and managing the applications that support physical security operations, business continuity management, crisis management, emergency response, and health and safety across the Molina enterprise. Implements, supports and maintains Molina's business applications, analyzes system requirements and performs and/or coordinates system and regression testing for business applications. - Represents as a technical subject matter expert for the Protection Services Operations Center (PSOC), and supports the business with the continued operation, maintenance, and enhancements to security, business continuity, crisis management, emergency response, and health and safety applications. - Meets with application owners/users to review upcoming maintenance, system enhancements and support-related issues on a periodic basis. - Liaises with stakeholders to ensure system strategy alignment and continuous delivery of enhancements to support growing business operations. - Supports incident response and crisis management activities during disruptive events as needed. - Provides training and guidance to the user community on the use of related applications. - Provides guidance and assistance to service desk for issues involving applications. - Evaluates system requirements and coordinates regression testing for business applications. - Engages with the information technology (IT) infrastructure team for technical design, configurations and ongoing operations of applications. - Develops and maintains systems documents, standard operating procedures (SOPs), and user training documents. - Collaborates with information technology (IT) business analysts on new system requirements and solutions based on those requirements. - Facilitates change management, training, and communication to the user community for applications. - Collaborates with third parties for ongoing support and maintenance of applications. - Ensures that the technical service catalog is kept up-to-date for existing and new applications. - Provides regular status reports and develops metrics for business applications for reporting to leadership. - May be required to work outside of normal business hours (nights, evenings, and weekends) if responding to emergencies. Qualifications - At least 5 years experience in physical security services, physical security operations, and/or threat intelligence, and at least 3 years of experience as a related systems/support analyst, or equivalent combination of relevant education and experience. - Comprehensive understanding of practices, principles, processes and tools related to physical security, threat intelligence, business continuity, risk management, health and safety, and emergency response. - Business continuity/security systems/technology integration experience. - Ability to create, run and analyze queries. - Advanced data analysis and reporting experience. - Understanding the flow of data, business processes, technical interfaces that would be created or impacted. - Ability to meet and manage project delivery deadlines. - Critical-thinking and problem-solving capabilities. - Demonstrated ability to organize information, and manage tasks and projects to support business needs. - Ability to flexibly accept dynamically changing priorities. - Strong project management experience/skills. - Strong verbal and written communication skills, and ability to present information to internal/external stakeholders. - Microsoft Office suite (including advanced Excel), and applicable software program(s) proficiency. Preferred Qualifications - Project Portfolio Management (PPM) experience. - Business Continuity Institute (BCI) and/or Disaster Recovery Institute International (DRII) certification. Benefits Molina Healthcare offers a competitive benefits and compensation package. Company Description Molina Healthcare is an Equal Opportunity Employer (EOE) M/F/D/V.
Senior Security Engineer
CynclyA Cyncly é uma potência global em tecnologia com mais de 2.400 funcionários e mais de 70.000 clientes em mais de 100 países. A Cyncly transforma a forma como produtos e espaços personalizáveis são imaginados, projetados, vendidos, gerenciados e fabricados. Nossas soluções de software de ponta a ponta conectam designers profissionais, varejistas e fabricantes ao maior repositório de conteúdo de produtos do mundo. A Cyncly traz mais de 30 anos de experiência para oferecer mais valor aos nossos clientes por meio de um portfólio expandido de soluções de ponta a ponta. Nossa presença global nos permite fornecer suporte e vendas de classe mundial com um toque local, garantindo a melhor experiência possível para o cliente. A Cyncly está embarcando em uma jornada empolgante enquanto continuamos a expandir por meio de um forte crescimento orgânico e aquisições complementares, apoiadas por empresas de private equity líderes especializadas em tecnologia.
Role Description In this role, you will be responsible for supporting the organization’s security posture through proactive risk management, operational readiness, and process improvement initiatives. You will collaborate closely with cross-functional teams to ensure secure practices are embedded across IT operations, and you will contribute to the development and enforcement of security policies and procedures. The ideal candidate will have a strong understanding of cybersecurity principles, excellent communication skills, and a proactive approach to identifying and mitigating risks. This role offers the opportunity to work in a dynamic environment where your contributions directly impact the resilience and integrity of our digital infrastructure. Key Responsibilities - Work in a 24×7 operational environment, including night shifts, weekends, and holidays, as per roster. - Oversee identity and access management (IAM) operations, including user provisioning, role-based access control, privileged access reviews, and account lifecycle tasks such as unlocking, disabling, and multi-factor authentication resets. - Contribute to the development and enforcement of access policies and conditional controls to strengthen account security. - Support the implementation and monitoring of endpoint protection and threat detection tools to enhance organizational resilience. - Develop and maintain standard operating procedures (SOPs) for key security processes, including onboarding, offboarding, and access governance. - Participate in the rollout and enforcement of data protection policies to prevent unauthorized data exposure. - Respond to security-related service requests and incidents, ensuring timely resolution and compliance with internal controls. - Collaborate with cross-functional teams to support compliance initiatives, risk assessments, and internal audits. - Ensure continuous monitoring, response, and support for critical systems and services. - Participate in shift rotations and handovers with clear documentation of ongoing activities, incidents, and priorities. - Maintain high alertness and responsiveness during non-business hours, when risk exposure is higher. - Monitor, detect, and respond to security incidents or operational issues in real time. - Ensure timely escalation of high-severity incidents as per defined SLAs. - Maintain audit trails and documentation for all actions taken during shifts. Qualifications - Bachelor’s degree in Cybersecurity, Information Technology, Computer Science, or a related field (or equivalent practical experience). - 3+ years of experience in IT with 2+ years of experience in information security is a must. - Solid understanding of cybersecurity principles, frameworks (e.g., NIST, SOC2), and best practices. - Experience with security tools such as SIEM, vulnerability scanners, endpoint protection, and identity management systems. - Familiarity with incident response, threat analysis, and risk assessment methodologies. - Strong analytical and problem-solving skills with attention to detail. - Excellent communication skills, both written/verbal, with the ability to collaborate across teams. - Ability to manage multiple priorities in a fast-paced environment. - Experience working with ticketing systems and documenting security processes. Desired Skills - Incident detection and response. - Familiarity with security tools (e.g., SIEM, EDR). - Knowledge of ISO 27001, NIST, or similar frameworks. - Process-driven and detail-oriented. - Risk assessment and mitigation. - Strong analytical and problem-solving abilities. - Clear written and verbal communication. - Documentation and reporting proficiency. - Task and time management. - Commitment to continuous learning. - Maintain professionalism and decision-making consistency across all teams. - Be prepared to handle critical situations independently during off-hours. - Adhere to organizational policies, security guidelines, and operational procedures. - Ensure all actions during shifts are logged, traceable, and compliant with internal controls. - Support continuous improvement of shift processes and operational efficiency. Benefits - Expected salary range is $40,000 - $60,000 USD, depending on location, experience, and qualifications. - This role may also be eligible for additional compensation such as bonuses, commissions, or equity. - Comprehensive benefits package. Equal Opportunity Employer Statement Cyncly is committed to equal opportunity and does not discriminate based on race, color, creed, religion, gender, age, sexual orientation, national origin, disability, veteran status, or any other characteristic protected by law. Applicants must be legally authorized to work in the country in which they are applying to work (United States or Canada). This role is not eligible for employer sponsorship now or in the future.
• Advance Firefox's security architecture and cryptography stack: Contribute to improvements in Firefox's core security systems, with a focus on cryptographic protocols, WebPKI, and security-sensitive web APIs. Help implement and maintain security features that support the evolution of public key infrastructure on the web. • Design and implement web platform security features: Develop and ship web platform features in collaboration with teammates and the broader web community. Contribute to standards-based, secure, and interoperable implementations across Firefox. • Improve browser reliability, performance, and resource efficiency: Investigate and resolve issues impacting stability, correctness, and performance. Analyze and improve memory usage and efficiency within a complex, multi-threaded browser environment. • Collaborate on security initiatives: Partner with engineers across teams to identify, prioritize, and address security issues. Participate in debugging, root cause analysis, and implementation of effective long-term solutions. • Contribute to technical design and planning: Participate in technical discussions, design reviews, and project planning for security-related initiatives. Help evaluate tradeoffs and contribute to engineering decisions within your area of work.

