Senior Software Engineer, Identity – PortugalThis role places you at the core of building secure, scalable identity systems that power modern digital platforms. You will design and maintain authentication and authorization infrastructure used by a large global developer base, ensuring every interaction remains secure and reliable. Working in a distributed, high‐scale environment, you'll tackle complex challenges across OAuth, SSO, and token‐based systems. As AI‐driven workflows evolve, you'll help define how non‐human actors securely interact with platforms. The position offers a strong mix of backend engineering, system design, and cross‐functional collaboration. You'll contribute to shaping next‐generation identity models in a forward‐thinking, remote‐first environment that values autonomy and technical excellence.AccountabilitiesDesign, build, and maintain authentication and authorization infrastructure supporting large‐scale distributed systemsImplement and evolve identity protocols such as OAuth 2.0, OIDC, SAML/SSO, session management, and JWTEnsure high reliability, performance, and security across identity services, from APIs to user‐facing authentication flowsDrive architectural improvements with a strong focus on scalability, resilience, and security best practicesDevelop identity solutions for AI and agent‐based workflows, including attribution and trust mechanismsCollaborate cross‐functionally with platform, security, and product teams to define identity standards and capabilitiesContribute to code reviews, incident response, and ongoing improvements to engineering quality and processesRequirementsStrong experience building backend systems using TypeScript/Node.js and PostgreSQL in production environmentsDeep expertise in authentication and identity standards (OAuth 2.0, OIDC, SAML, JWT, session management)Proven track record designing and operating distributed systems at scale, with a solid understanding of trade‐offs and failure scenariosSecurity‐focused mindset with knowledge of threat modeling, trust boundaries, and least‐privilege principlesAbility to work autonomously and take ownership of projects end‐to‐end in a remote setupStrong collaboration and communication skills across technical and non‐technical teamsExperience with Go, Lua, or cloud platforms is a plusBenefitsFlexible and remote‐friendly work environment across EuropeCompetitive salary package with location‐based compensationStock options program to share in company successComprehensive healthcare coverage and wellness benefitsSupportive, collaborative, and highly skilled international teamOpportunities for continuous learning, growth, and career developmentHealthy work‐life balance with flexibility for personal and family needsData Privacy Notice:By submitting your application, you acknowledge that Jobgether will process your personal data to evaluate your candidacy and share relevant information with the hiring employer. This processing is based on legitimate interest and pre‐contractual measures under applicable data protection laws (including GDPR). You may exercise your rights (access, rectification, erasure, objection) at any time.#J-18808-Ljbffr