Senior Software Engineer

St Petersburg · Remote · USD 115,000-160,000 · 6+ years experience · Remote · Posted Oct 15, 2026

At a glance

DigiCert is hiring a Senior Software Engineer to build and run the platform behind certificate management, TLS, vulnerability monitoring, uptime, and security products.
This role involves owning features end to end across a TypeScript monorepo utilizing Fastify, Express, Next.js, React, MySQL, and Redis, deployed on AWS and Kubernetes.
The position also requires maintaining and retiring a legacy .NET estate while building a growing set of AI-assisted features and internal tooling.

Design, build, and ship features across the full stack including Fastify or Express APIs, Next.js and React frontends, MySQL schemas and migrations, SQS-driven workers, and infrastructure.
Own services in production with observability via Sentry and Grafana, on-call participation, incident root-causing, and follow-through fixes.
Build and evolve security and monitoring products that scan, probe, and score real customer infrastructure at scale.
Maintain and incrementally retire legacy .NET and Python components, moving behavior into the TypeScript platform with verified parity.
Extend CI/CD and infrastructure using Azure DevOps pipelines, Docker images, Helm charts, and Terraform for EKS, RDS, SQS, and related AWS services.
Integrate third-party and partner APIs such as certificate authorities, scanners, and identity providers to keep integrations resilient.
Use AI-assisted development tools as part of daily work and build AI-backed features where they genuinely improve the product.
Review code, write tests, and raise the bar on standards that apply to human and AI-generated code alike.
Mentor other engineers and write up decisions so others can act on them without you in the room.

6+ years building and operating production web services and the frontends on top of them.
Strong TypeScript and Node.js, including a modern API framework (Fastify preferred, Express acceptable) and a React framework (Next.js preferred).
Production experience in more than one language or ecosystem, and at least one stack change you drove or adapted to in the last few years.
Solid relational database skills on MySQL or Postgres: schema design, migrations, indexing, query performance, and transaction and locking behavior.
Comfort owning what you ship including logging, metrics, alerting, and calm, evidence-led debugging in production.
Security awareness as a habit including authentication and authorization flows, secrets handling, input validation, and dependency hygiene.
Clear written communication to explain a design, a trade-off, or an incident to engineers and non-engineers.

Hands-on AWS (compute, queues, storage, secrets) and the ability to read and change Terraform.
Containers and Kubernetes at a working level like writing a Dockerfile, reading a Helm chart, or debugging a failing pod.
CI/CD pipeline work in Azure DevOps or similar, plus Cloudflare or AWS WAF experience.
Grafana, Sentry, or equivalent observability tooling beyond basic dashboards.
Experience with PKI, TLS, or certificate lifecycle management, or with monitoring and scanning products.
OAuth 2.0 and OpenID Connect implementation experience, especially multi-tenant identity providers.
C# and .NET enough to read, maintain, and migrate legacy services.
Python for data pipelines, scanners, or tooling.

Show all 15 skills