Senior Software Engineer – AI-Driven Security Platform

WithSecure; Poznań; On-site; PLN 250,000 - 350,000; Full time

Job summary

WithSecure is seeking a Senior Software Engineer to join a small, experienced team building and operating the web applications and backend services behind our detection and response offering.

You’ll design, build, and operate production features across front end and back end, own the components you work on, and collaborate with product management, security analysts, and other engineering teams in a Vue 3/Python/TypeScript stack on AWS.

Qualifications

• Several years of commercial software development experience.
• Strong experience building modern front-end applications, preferably with Vue 3.
• Confidence with JavaScript-based front-end applications (Vue codebases use JavaScript).
• Solid backend development experience with Python or Node.js/TypeScript, and willingness to work in both.
• Experience with Rust is beneficial but not required.
• Experience in agile teams with Jira or similar tools.
• Experience using AI coding assistants in real codebases with good judgment.
• Practical AWS experience and understanding of serverless architectures.
• Experience with infrastructure as code (Terraform) and CI/CD pipelines (GitHub Actions).
• Good written and spoken English.

Responsibilities

• Design, build, and maintain Vue 3 front-end applications with shared components and API integrations.
• Build and operate backend services, serverless functions, and reporting pipelines in Python and Node.js/TypeScript.
• Contribute to Rust services and AI capabilities within the product.
• Work with AWS services (Lambda, S3, DynamoDB, etc.) and related tooling.
• Participate in CI/CD modernization and migrate pipelines to GitHub Actions.
• Own technical design decisions and document them clearly for the team.
• Contribute to incident handling and operational support for owned services.

Skills

Vue 3

JavaScript

Python

Node.js/TypeScript

AWS

CI/CD

Agile/Scrum

Code review

English communication

Tools

GraphQL

Terraform

GitHub Actions

OpenSearch

S3

Bedrock

Job description

WithSecure is seeking a Senior Software Engineer to join a small, experienced team building and operating the web applications and backend services behind our detection and response offering.

You’ll design, build, and operate production features across front end and back end, own the components you work on, and collaborate with product management, security analysts, and other engineering teams in a Vue 3/Python/TypeScript stack on AWS.