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About the Role

We are seeking a Backend Software Engineer with a strong security background to join our Paris-based product development team. This role focuses on building innovative features to enhance security protection for both B2B and B2C users, researching and developing product capabilities that improve user protection, strengthen identity and access controls, reduce security risks, and elevate the overall security posture of the Dashlane experience. You will design, build, and operate backend services for security-sensitive features in close partnership with product, design, infrastructure, and the Security organization. This is an ideal position for an engineer experienced in building security-relevant product features in a SaaS environment, understanding application security fundamentals, and contributing to secure, scalable backend systems.

Responsibilities

Research, design, implement, and maintain backend services supporting user-protection features across B2B and B2C products.
Build features related to identity, authentication, access control, threat prevention, and other security-sensitive user journeys.
Collaborate with Product and Security teams to assess opportunities, translate security requirements, and risk assessments into effective product features.
Contribute to threat modeling and apply security best practices throughout the software development lifecycle.
Improve system resilience against common attack patterns like account abuse, privilege misuse, insecure integrations, and identity-related vulnerabilities.
Participate in architecture discussions and make pragmatic trade-off decisions balancing security, usability, maintainability, and delivery speed.
Write high-quality, well-tested, maintainable code and support services in production with appropriate observability and operational ownership.
Collaborate with cross-functional stakeholders to deliver technically sound and valuable security features.

Requirements

Professional experience as a backend software engineer with hands-on delivery of production systems in a SaaS or cloud-based environment.
Strong curiosity about security-related topics.
Strong experience building features that protect users and improve product security.
Solid understanding of application security best practices, including secure design principles and threat modeling.
Experience working closely with a CISO, Security team, or equivalent security stakeholders.
Proficiency in backend development with modern languages and frameworks, ideally Node.js and TypeScript.
Experience designing APIs, integrating external systems, and operating services in production.
Good communication skills and ability to work effectively in a cross-functional environment with Web/Client engineers, Product Managers, and Product designers.
Fluency in English.
Strong knowledge in cryptography.
Familiarity with Identity and Access Management frameworks and protocols, such as Passkeys, SAML, OAuth, SCIM, or similar experience in working with other security-related features.
Experience building enterprise security features for administrators and managed business environments.
Experience with authentication hardening, account recovery flows, access governance, or fraud and abuse prevention.
Familiarity with modern passwordless authentication patterns and user identity lifecycle management.
Experience contributing to security reviews, incident follow-ups, or remediation plans.
Exposure to consumer-scale and business-scale product constraints in the same environment.

Skills

Node.js
TypeScript
AWS
ECS
RDS
Redis
S3
GitLab
Terraform
SonarQube
ELK
Datadog
Cryptography
Identity and Access Management
Passkeys
SAML
OAuth
SCIM
Authentication hardening
Account recovery flows
Access governance
Fraud and abuse prevention
Passwordless authentication
User identity lifecycle management
Security reviews
Incident follow-ups
Remediation plans

Location

Paris

Work Type

Hybrid

Experience Level

Backend Software Engineer

Benefits

Industry-leading innovations
Patented zero-knowledge security
Unmatched user experience
Flexibility of remote work
Strengthen team connections
Support individual productivity
Work-life balance

About the Company

Dashlane's mission is to deliver the credential security every business and employee needs to thrive.
Millions of consumers, and over 25,000 brands worldwide, such as Michelin, Air France, and Forrester, trust Dashlane for industry-leading innovations, patented zero-knowledge security, and an unmatched user experience.
Founded in Paris, Dashlane has since established offices in New York and Lisbon, and has grown to more than 300 Dashlaners globally.
We're looking for people who actively use AI tools to drive efficiency, creativity, and impact in their work.
At Dashlane, we drive innovation and value learning, strive for excellence in everything we do, and thrive as one team.
Learn more about life at Dashlane, including how we work, how we hire, and the benefits of being a Dashlaner.

Equal Opportunity

As a truly international company—founded in France and distributed across France, US and Portugal—Dashlane thrives off diverse perspectives.
We value all aspects of diversity: gender identity, sexual orientation, ability, ethnic origin, social background, age, lifestyle, and more.
We are committed to hiring a diverse community and fostering a culture where everyone is heard and belongs.