Senior Backend & Cloud Engineer — AI-Driven Security

Cloud Protection by WithSecure; Helsinki; On-site; EUR 90,000 - 130,000; Full time

Job summary

Cloud Protection by WithSecure is seeking a senior backend engineer to design, build, and operate Python services that power Security Core on AWS. You will develop detection pipelines for malware, phishing, and identity-based attacks, and implement observability to measure latency, throughput, and reliability.

You will drive architecture decisions for scalable, secure, and cost-effective cloud infrastructure, while collaborating with threat intelligence and product teams.

Qualifications

• Deep engineering fundamentals: solid professional experience in system design, distributed systems, concurrency, and API design.
• Proven ability to design cloud architecture on AWS: choosing the right services and making trade-offs between scalability, reliability, security, and cost.
• Hands-on experience building and operating production services on AWS, including infrastructure as code.
• Fluency with AI-assisted development as a daily way of working, with engineering judgment to validate results.
• Confident Python backend development.
• A practical, well-grounded approach to software testing.
• Clear communication and the ability to collaborate across engineering, threat intelligence, and product.
• Fluent English.

Responsibilities

• Design, build, and operate the Python services that make up Security Core on AWS
• Build and evolve the detection pipelines that detect malware, phishing, and identity-based attacks
• Implement the metrics and observability that show detection quality, latency, and availability in production
• Drive architecture decisions on scalability, reliability, security, and cost
• Own infrastructure as code and the delivery of production environments
• Build internal tooling for threat analysts
• Work closely with the Salesforce app and threat intelligence teams

Skills

System design

Distributed systems

Concurrency

API design

Python backend

AI-assisted development

Software testing

AWS

Infrastructure as code

Communication

Tools

AWS

Job description

Cloud Protection by WithSecure is seeking a senior backend engineer to design, build, and operate Python services that power Security Core on AWS. You will develop detection pipelines for malware, phishing, and identity-based attacks, and implement observability to measure latency, throughput, and reliability.

You will drive architecture decisions for scalable, secure, and cost-effective cloud infrastructure, while collaborating with threat intelligence and product teams.