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Urgent! Senior Software Engineer (Golang) Job Opening In Spain – Now Hiring OpenVPN Inc.

Senior Software Engineer (Golang)



Job description

We’re seeking a Senior Software Engineer to help build and evolve the Gateway , the edge enforcement and routing component of our AI-driven Zero Trust Network Access (ZTNA) platform.

The Gateway is central to the architecture, responsible for real-time policy enforcement, DNS aliasing, and risk-aware access control across multi-tenant environments.

You’ll design and develop secure, high-performance, distributed systems that make the overlay network resilient, intelligent, and autonomous — whether deployed on-prem, in the cloud, or at the edge.

Responsibilities

  • Design and build services powering Gateway nodes — including DNS proxy , firewall rule orchestration , policy enforcement , and device posture validation .

  • Collaborate with the Controller (back-end) and AI teams to enable adaptive, AI-driven access policies .

  • Engineer and optimize real-time communication (gRPC/REST/WebSockets) between Gateways, Connectors, and the Controller.

  • Develop observability and telemetry pipelines for Gateway nodes — logs, metrics, traces.

  • Contribute to the Gateway clustering model , ensuring scale-out routing, load balancing, and fault tolerance.

  • Collaborate closely with the Architects and DevOps team to align with CipherScale’s reference architecture and deployment blueprints.

  • Participate in design reviews, architecture discussions, and end-to-end testing (performance, resilience, and compliance).

  • Responsible for Quality of the Code – Write and maintain unit, integration, end-to-end, performance tests using AI, scripts, and code quality check tools.

Job requirements

  • 5+ years of software engineering experience, designing and deploying distributed systems at scale.

  • 3+ years of hands‑on experience with Go (Golang) , including concurrency, memory management, networking, and performance tuning.

  • Deep understanding of network‑level protocols and enforcement (TCP/IP, UDP, DNS, TLS, iptables/nftables, conntrack).

  • Proven experience building multi‑tenant, security‑sensitive systems with strict SLA and HA requirements.

  • Familiarity with authN/authZ protocols (OAuth 2.0, OpenID Connect, JWT, SMAL, Certificates) and risk‑based access control .

  • Experience building and managing systems using Docker, Kubernetes, ArgoCD , and CI/CD pipelines .

  • Strong understanding of observability patterns — metrics, distributed tracing, and log pipelines.

  • Proven ability to work cross‑functionally with architecture, AI, and infrastructure teams in a remote‑first and distributed environment.

Nice to Have

  • Background in VPN technologies , access management , or cybersecurity
  • Experience with policy engines (e.g., OPA , Cedar )
  • Familiarity with Cloudflare (e.g., Workers , DNS , WAF )
  • Exposure to SaaS infrastructure and Kubernetes orchestration
  • Experience scaling high‑traffic , production‑grade systems
  • Prior experience in a startup environment
  • BSc/MSc in Computer Science, Engineering, or related field

Benefits

  • Competitive pay rates
  • Fully remote work environments
  • Self‑managed time off

Seniority level

Mid‑Senior level

Employment type

Contract

Job function

Computer and Network Security

Madrid, Community of Madrid, Spain 6 days ago

#J-18808-Ljbffr


Required Skill Profession

Informática Y Tecnología



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