Senior Go Developer (IAM)
At EMCD · Belgrade, Belgrade, Serbia
- Engineering
- Full-time
- Senior
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Open to Serbia
“Belgrade, Belgrade, Serbia”
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- First seen by us
- 15 October 2026
- Last checked
- 3 hours ago
Job description
From EMCD’s job post, as they wrote it.
EMCD is a global crypto ecosystem building products across mining, wallets, payments, custody, and digital asset infrastructure.
We are looking for a Senior Go Developer to join the IAM team and take ownership of the services behind authentication, registration, MFA, identity, and user access across EMCD products.
The role combines hands-on backend development with technical ownership of the IAM domain, including Keycloak-based infrastructure and legacy Go services.
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Responsibilities
* Own the architecture of the IAM domain, including Keycloak-based infrastructure and legacy Go services
* Make architectural decisions and document them through ADRs
* Break down larger initiatives into repository-level tasks, estimate delivery, and take ownership of key milestones
* Review code and support the technical development of engineers within the team
* Own production reliability for authentication and registration flows: investigate incidents, write postmortems, and drive follow-up actions to completion
* Work closely with CISO, Compliance, Support, and product teams including Coinhold, Mining, and Backoffice
* Improve existing IAM services while reducing technical debt and simplifying legacy components
Requirements
* 4+ years of production development experience with Go
* Strong understanding of OAuth 2.0 and OpenID Connect at protocol level: Authorization Code + PKCE, refresh token rotation, token exchange, Direct Grant and its risks, JWT signing, claims, and resource-side validation
* Production experience with Keycloak: realms, clients, authentication flows, required actions, identity brokering with Google, Apple, or external OIDC providers, and major-version upgrades
* Strong experience with MFA: TOTP, SMS and email OTP, push authentication, passkeys and WebAuthn, including origin / RP ID specifics for web and mobile
* Understanding of step-up authentication and trust levels using LOA / ACR
* Experience managing user sessions and devices, session revocation, session hijacking protection, and secure cookie configuration
* Strong Go backend experience. Our stack includes echo, pgx, goose, Redis, Kafka (segmentio/kafka-go), gRPC, protobuf, and OpenTelemetry
* Strong PostgreSQL knowledge: schema design, indexes, JSONB, query performance at scale, and zero-downtime migrations
* Experience with event-driven systems and patterns such as transactional outbox, idempotency, retries, and DLQ
* Experience with hexagonal architecture and integration testing using testcontainers
What We Offer
* Fully remote work from anywhere in the world
* Flexible working hours focused on results
* 20 paid vacation days + 12 additional bonus days
* 100% paid sick leave
* Paid English lessons
* Support for courses, certifications, and professional training
* Technical ownership of a core IAM domain used across multiple EMCD products
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