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Senior Elixir Engineer

2 days, 4 hours ago
Sweden, Europe, Germany, Greece, Poland, Romania
Full-time
Senior
Backend Engineer
Software Development
Beam CI/CD Docker Ecto Elixir Erlang Grafana JavaScript Kubernetes Microservices OWASP Phoenix PostgreSQL Prometheus REST API Tailwind CSS
Apply Now
Hack The Box

Hack The Box

Hack The Box serves as a premier Cybersecurity Performance Center, providing advanced training and certification resources for both aspiring security professionals and established teams to enhance their skills and drive peak cyber performance.

Internet Software & Services
51-250
Founded 2017
$70M raised
View All Jobs 11

Description

  • Design and build production Phoenix applications, REST APIs, LiveView interfaces, and real-time PubSub or Channels features.
  • Model and evolve data with Ecto and PostgreSQL, including query optimization and zero-downtime migrations.
  • Build fault-tolerant OTP systems using supervision trees, GenServers, and distributed BEAM patterns.
  • Own background processing and scheduled workloads with Oban, supported by Telemetry and metrics.
  • Develop secure-by-default authentication, authorization, data-access, and input-handling patterns.
  • Deploy and operate services on Kubernetes and GCP while contributing to CI/CD and release quality.
  • Collaborate with product, design, and security researchers to translate complex workflows into user experiences.
  • Mentor engineers through code reviews, design sessions, and coding standards.
  • Document technical decisions and collaborate effectively in a remote-first, asynchronous environment.

Requirements

  • 5+ years of professional backend or full-stack development experience, including 3+ years shipping production Elixir/Phoenix.
  • Strong knowledge of OTP and the BEAM, including processes, supervision, GenServer, and GenStage.
  • Hands-on Phoenix LiveView experience with components, streams, and JavaScript hooks.
  • Deep Ecto and PostgreSQL experience, including schema design, indexing, query optimization, and migrations.
  • Experience with background job systems—Oban preferred—and event-driven architectures.
  • Strong testing practices with ExUnit, including property-based and integration testing.
  • Familiarity with Docker, Kubernetes, and CI/CD best practices.
  • Security-minded engineering experience, including OWASP fundamentals, authentication patterns, and secure user-data handling.
  • Excellent written and verbal communication skills, particularly in remote and asynchronous environments.

Benefits

  • Fully remote work across Europe or hybrid work from the Athens Tech Hub, with flexible working hours.
  • 25 annual leave days and paid parental leave.
  • 10% relocation bonus, 50% income-tax reduction, and initial accommodation support for eligible relocations to Greece.
  • Home office allowance and state-of-the-art equipment.
  • Dedicated training and professional development budget, including conference participation.
  • Full access to Hack The Box lab offerings.
  • Supportive environment with opportunities for continuous learning, autonomy, and growth.

Interested in this position?

Apply directly on the company website

Apply Now

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