Xsolla

Staff Software Engineer — Identity & Access Management

Serbia

Full-Time

Remote

TLDR

Own the authentication and authorization architecture and strategy, shape OAuth 2.0 / OIDC flows, drive cross-team decisions, de-risk production, and mentor broad engineering efforts.

Responsibilities

Own IAM Architecture & Strategy — Own the technical strategy and architecture of our IAM platform, covering authentication, authorization, and session management at scale.

Design Auth Protocols — Design and evolve our OAuth 2.0 / OIDC flows, token lifecycle, and security primitives to meet both product and compliance requirements.

Drive Cross-Team Technical Decisions — Drive decisions on protocol design, data modeling, and platform reliability, and build buy-in across engineering and security teams.

De-Risk Proactively — Identify systemic risks and performance bottlenecks; lead initiatives to resolve them before they become incidents.

Set Engineering Standards — Define engineering standards, review critical code and designs, and create leverage for the team through documentation, tooling, and mentorship.

Align with Stakeholders — Collaborate with product, security, and infra teams to align on roadmap and translate business needs into well-scoped technical plans.

Own Production Escalations — Serve as the go-to escalation point for complex production issues in the IAM domain.

Requirements

Identity & Security

OAuth 2.0 / OIDC Depth — Deep understanding of OAuth 2.0, OIDC, and related auth flows: authorization code + PKCE, client credentials, device flow, token introspection, refresh strategies.
Web Security Fundamentals — Solid grasp of cookie security, CSRF, XSS, token storage, TLS, and secure session management.
Production IAM Experience — Experience designing or operating production-grade IAM or auth systems.

Backend Engineering

Go Engineering — Strong Go (Golang) engineering skills: idiomatic code, concurrency patterns, performance profiling.
Distributed Systems — Experience with distributed systems and their trade-offs (consistency, availability, failure modes).

Data & Infrastructure

PostgreSQL — Schema design, query optimization, migrations at scale.
Kubernetes — Deploying, operating, and debugging services in a k8s environment.
Message Streaming — Kafka or NATS — event-driven patterns, consumer groups, at-least-once delivery.
Git & CI/CD — Git and modern CI/CD practices.

Leadership

Cross-Team Initiative Leadership — Proven ability to lead multi-quarter technical initiatives across teams.
Architectural Influence — Track record of influencing architecture and standards beyond your immediate team.
Written & Verbal Communication — You write RFCs and design docs that people actually read.

Nice to Have

Hands-on experience with the Ory ecosystem (Hydra, Kratos, Keto) — operating it in production or building on top of its APIs

Experience with CockroachDB or other distributed SQL databases (multi-region deployments, clock skew handling, survivability trade-offs)

Familiarity with compliance requirements relevant to IAM: SOC 2, ISO 27001, GDPR data minimization, audit logging

Contributions to open-source security or identity projects

Experience building or integrating with SCIM, SAML, or enterprise SSO (LDAP / Active Directory)

Background in platform or infrastructure engineering — building systems other engineers build on top of

Hands-on, up-to-date experience with modern AI tools (e.g. Claude, Copilot, Cursor) for code generation, review, and accelerating day-to-day engineering work

About Xsolla

Xsolla is a global commerce company with robust tools and services to help developers solve the inherent challenges of the video game industry. From indie to AAA, companies partner with Xsolla to help them fund, distribute, market, and monetize their games. Grounded in the belief in the future of video games, Xsolla is resolute in the mission to bring opportunities together, and continually make new resources available to creators. Headquartered and incorporated in Los Angeles, California, Xsolla operates as the merchant of record and has helped over 1,500+ game developers to reach more players and grow their businesses around the world. With more paths to profits and ways to win, developers have all the things needed to enjoy the game.

For more information, visit xsolla.com.

How We Work

Xsolla operates across multiple time zones, and the IAM platform underpins authentication and authorization for every product we ship. Strong written communication is essential — your architectural decisions and designs need to stand on their own and be actionable without you in the room.

We value directness, technical depth, and follow-through. If a design or production issue has real security or reliability implications, we expect you to say so clearly, defend your position with evidence, and stay engaged until it's resolved.

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Xsolla

Xsolla is a global commerce company that empowers game developers by providing tools and services to tackle the complexities of the video game industry. Catering to both indie and AAA developers, Xsolla partners with them to enhance funding, distribution, marketing, and monetization of their games. With a mission to connect opportunities and innovate resources, Xsolla has supported over 1,500 game creators in expanding their reach and growing their businesses worldwide.

Founded: Founded 2005
Employees: 201-500 employees
Industry: Diversified Financial Services

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Staff Software Engineer