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About the Role

We are looking for a Platform Engineer to help build internal platform capabilities that enable engineering teams to move quickly without compromising security, reliability, or operational control. This role is more software and product-oriented than a traditional infrastructure role, focusing on treating the platform as a product with engineers as users.

Responsibilities

Build and improve internal platform capabilities used by engineering teams and customers across ACRA.
Design and implement tooling, automation, workflows, and integrations to improve developer velocity and operational consistency.
Collaborate with backend engineers to simplify service building, testing, deployment, observation, security, and operation.
Build platform primitives for application lifecycle management, environment provisioning, deployment automation, configuration, secrets, observability, and controlled execution.
Construct and enhance golden paths, reusable templates, and self-service workflows for engineering teams.
Utilize Kubernetes, Docker, Terraform, Argo CD, GitOps, GitHub Actions, Helm, Kustomize, container registries, secrets management, and CNCF tooling.
Write code and automation in languages such as Go, Python, TypeScript, or JavaScript.
Improve CI/CD pipelines, release workflows, deployment safety, rollback strategies, and environment management.
Integrate platform tools into coherent workflows.
Evaluate, introduce, and operationalize CNCF tools to enhance the platform.
Build systems that operate across GCP, on-premise, bare-metal, sovereign cloud, air-gapped, and customer-managed environments.
Contribute to observability, alerting, logging, tracing, dashboards, and production debugging workflows.
Define platform standards, golden paths, reusable templates, and operational patterns.
Collaborate with infrastructure engineers on the boundaries between platform tooling and core infrastructure.
Take ownership of defined projects and grow into broader technical responsibility.

Requirements

Experience in platform engineering, DevOps, infrastructure engineering, backend engineering, SRE, or developer tooling.
Strong hands-on experience with Kubernetes, Docker, CI/CD, and modern deployment workflows.
Proficiency in writing production-quality automation or tooling in Go, Python, TypeScript, or JavaScript.
Familiarity with infrastructure as code and GitOps workflows, including Terraform, Argo CD, Helm, Kustomize, or similar tools.
Experience with CI/CD systems such as GitHub Actions or similar.
Good understanding of application building, containerization, deployment, configuration, monitoring, and operation.
Strong system design fundamentals, focusing on reliability, scalability, observability, failure handling, and maintainability.
Product-minded approach to platform engineering, understanding the 'why' behind platform development.
Demonstrated ability to build useful tools, automation, deployment systems, reusable templates, self-service workflows, or platform capabilities for other engineers.
Comfortable collaborating with backend engineers and understanding application-level requirements.
Ability to move quickly while building understandable, maintainable, and safe systems.
Self-driven, curious, and comfortable taking ownership of work areas.
Adaptable to a startup environment with changing priorities and broad technical exposure.
Strong communication skills for cross-functional collaboration without adding unnecessary process.
Experience building internal developer platforms, paved roads, golden paths, or platform-as-a-product capabilities (Nice to have).
Experience working in startups, product engineering teams, infrastructure teams, or platform teams with broad ownership (Nice to have).
Experience with GCP, on-premise, bare-metal, air-gapped, or restricted deployment environments (Nice to have).
Experience with service mesh, network policy, ingress and egress control, or secure service-to-service communication (Nice to have).
Familiarity with secrets management tools such as Vault, OpenBao, SOPS, Sealed Secrets, External Secrets, or cloud-native secret managers (Nice to have).
Familiarity with supply-chain security concepts such as image signing, vulnerability scanning, SBOMs, artefact verification, admission control, or policy-as-code (Nice to have).
Experience with CNCF tools such as cert-manager, External Secrets, OPA, Kyverno, Gatekeeper, Crossplane, Backstage, Argo Workflows, Flux, Prometheus, Grafana, Loki, OpenTelemetry, Istio, Cilium, or Envoy (Nice to have).
Experience with backend engineering, APIs, microservices, event-driven systems, or Go services (Nice to have).
Experience contributing to systems where auditability, traceability, and operational evidence are important (Nice to have).
Experience with secure or regulated environments, such as defence, government, fintech, healthcare, critical infrastructure, sovereign cloud, or customer-managed deployments (Nice to have).

Skills

Kubernetes
Docker
CI/CD
Go
Python
TypeScript
JavaScript
Terraform
Argo CD
GitOps
GitHub Actions
Helm
Kustomize
CNCF tooling
Observability
Alerting
Logging
Tracing
System Design
Infrastructure as Code
Service Mesh
Secrets Management
Supply-Chain Security
Backend Engineering
APIs
Microservices
Event-Driven Systems

Location

London HQ

Work Type

Hybrid

Experience Level

Platform Engineering
DevOps
Infrastructure Engineering
Backend Engineering
SRE
Developer Tooling

Benefits

Equity
Competitive salary
Employer pension contributions
Private health insurance
Hybrid work setup
Rewarding company retreats and meetups

About the Company

Valarian Technologies is a dual-use technology company building critical tools to safeguard the future in an era of evolving global security challenges.
We're rethinking security beyond traditional military domains, addressing asymmetric threats that impact our technological advantage, economic strength, and democratic institutions.
We build Acra – the platform foundation for everything we do as a dual-use technology company.
The platform’s name, rooted in the Greek word for citadel (or, fortress), reflects the design and purpose of our infrastructure-agnostic secure enclaves: protecting critical data.
Some of the government and commercial workflows include: increased operational resiliency for mission-critical systems and functions; enabling organisations to more quickly and widely adopt emerging technologies while ensuring the integrity of their intellectual property; information flow during disaster response scenarios, and zero-trust / least-privilege environments for M&A, attorney-client privileged communications, etc.
At our core, we're driven by a shared mission and a belief in making a tangible impact on our world.
Whether you join our London HQ or the wider global organisation, you’ll be a part of collaborative, high-performing teams, creating cutting-edge software, platforms, and infrastructure.
Our culture is built on inclusivity, compassion and flexibility – we want everyone to be empowered to achieve their goals at Valarian.
The work we do is vital, but so are the connections that make it happen.
We thrive on the shared energy, spontaneous conversations, and mutual trust built when we spend time together.
We operate on a hybrid model, gathering in our London office 3 days a week to support one another and collaborate.

Equal Opportunity

Valarian Technologies Limited is an equal opportunity employer and welcomes applications from individuals regardless of race, colour, religion, sex, sexual orientation, gender, identity or expression, national origin, age, disability, genetic information, marital status, veteran, amnesty, or any other legally protected characteristic.
We are committed to ensuring a fair and inclusive recruitment process and providing employment opportunities to all applicants.
Decision recruitment, hiring, and employment are based solely on qualifications, skills, and experience relevant to the job requirements.