DevOps/SysOps Engineer with email technology flavor

### About the company

Vereign is a vendor and producer of business applications built on top of Decentralized Key Management (DKMS) and Self-Sovereign Identity (SSI). Our solutions re-define digital trust and data ecosystems. Our Secure Edge Application Layer (SEAL) technology is being used by Secure Edge Mail in Switzerland where we secure half a million interactions each month for the Swiss healthcare system, allowing doctors and others to securely communicate with patients on unsecured edge devices. Combining end-to-end encryption, verified identity, and edge delivery, this solution is ideal for sensitive communication in sectors like healthcare, legal, finance, and government. Vereign is also a member of the European Health Data Association (EHDA) as well as a founding member of the DKMS Alliance, focusing on decentralized key management technologies and interoperability at scale, ensuring security, privacy, and authenticity are built in from the start.

### Role

You’ll bridge the gap between mail-server fundamentals and modern container-native operations. Day-to-day this means onboarding new customer deployments, integrating Verimesh with existing mailbox/groupware backends (Exchange, Mail-in-a-Box, Postfix/Dovecot, etc.), diagnosing real-world delivery problems, and feeding lessons learned back into our deployment scripts, Helm charts and documentation.

With the rapid expansion of our Bulgarian office, we are looking for а highly-motivated person to join our DevOps team.

To keep it short, here are some key responsibilities

### Responsibilities

• Deploy and maintain Verimesh instances at customer sites (Docker Compose, Helm/k8s, OpenShift, VM images)

• Integrate with customer mail backends: Exchange/Office 365 connectors, Postfix relays, Dovecot, MIAB, smarthosts

• Configure DNS (MX, SPF, DKIM, DMARC, PTR), TLS and S/MIME certificate flows

• Diagnose SMTP delivery problems end-to-end: queue analysis, header tracing, content filters, greylisting, mail loops, NAT/firewall issues

• Operate and troubleshoot secure tunnels between gateways

• Improve installation/onboarding scripts, Compose files and Helm charts

• Set up monitoring, log shipping (Promtail/Loki) and alerting for customer instances

• Write and maintain customer-facing and internal documentation

• Provide support for customers and integrators

### Required

• Solid Linux administration (systemd, networking, iptables/nftables, DNS, TLS)

• Deep working knowledge of SMTP and mail internals: Postfix configuration, transport maps, content filters, header rewriting, queue management, greylisting, SPF/DKIM/DMARC

• S/MIME (X.509 certs, signing, encryption, key management) – or willingness to ramp up fast

• Docker and Docker Compose in production

• Kubernetes (Helm, manifests, troubleshooting workloads); OpenShift exposure a plus

• Comfort on the command line, shell scripting (bash), reading logs and tcpdumps

• Git-based workflows (GitLab/GitHub)

• Ability to communicate clearly with both technical and non-technical customers in writing

### Nice to have

• Microsoft Exchange / Exchange Online (connectors, hybrid, send/receive connectors, transport rules)

• WireGuard or other VPN/overlay networks

• HashiCorp Vault, MinIO/S3, PostgreSQL ops

• Prometheus/Grafana/Loki

• IaC (Terraform, Ansible) and CI/CD pipelines

• German and/or French (most customers are CH-based)

### What you’ll work with

Postfix, Dovecot, OpenSSL, S/MIME, WireGuard, Docker Compose, Kubernetes, Helm, OpenShift, HashiCorp Vault, MinIO, PostgreSQL, OPA/Rego policies, Prometheus, Loki, Grafana, GitLab CI.

### Benefits

* Remote work flexibility with weekly team meetings

* Opportunity to work with state-of-the-art technologies

* Freedom to introduce and implement your own ideas

* A supportive and friendly working environment

* Employee Share Ownership rewards program

* Access to our modern and custom-designed office in Sofia

* Additional health insurance

### Company Culture

Our cultural north star are the „Unicorn Project“ and „Phoenix Project“ novels. The approach is one of engineering excellence, built on top of an agile methodology in which team members are being trusted to take responsibility, and make the best possible decisions with the information available. We believe in open exchange, learning together from our mistakes, and take pride in always delivering more than our partners and customers expect from their experience with other teams.

We are a close-knit, but welcoming group of highly talented individuals who enjoy working together in the environment we have created for ourselves and each other, while working on meaningful problems that have the potential to improve the life of people anywhere in the world.

In our team, you will have the opportunity to contribute to the selection of technology and frameworks, be empowered and expected to make the right choices on tools and approaches for the task at hand. Furthermore, you will have a significant impact on the product’s direction and development, leaving a lasting impression on our users and the industry as a whole.

Let’s talk soon!