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Open nowFirst seen 39 hours ago

Senior Go Developer (IAM)

EMCD14 open roles

Where
Belgrade, Serbia, Remote
Work mode
Remote
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Your applicationOpen nowSenior Go Developer (IAM)EMCD · Belgrade, Serbia, Remote

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Share of postings closed within
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  2. 4.4%3 days
  3. 11.9%7 days
  4. 18.6%14 days
  5. 35.6%30 days
  6. 45.1%60 days
This job: first seen 39 hours ago

The posting

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.

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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