Senior Application Security Engineer

Unlimit; Belgrade (MT); On-site; USD 120,000 - 160,000; Full time

Job summary

Unlimit is seeking a Senior Application Security Engineer to be a hands-on security expert for applications, APIs, and development processes. You will help engineering teams identify and remediate security risks early, automate security testing, and integrate security into CI/CD pipelines.

Ideal candidates combine strong software engineering fundamentals with practical offensive security knowledge and a passion for scalable, developer-friendly security solutions powered by automation and AI.

Qualifications

• Hands-on technical expert in securing applications, APIs, and development processes.
• Experience identifying and remediating security risks early in the SDLC.
• Ability to automate security testing and integrate security into modern CI/CD pipelines.

Responsibilities

• Improve security of Unlimit's applications, APIs, and development processes.
• Identify and remediate security risks early in the SDLC.
• Automate security testing across CI/CD pipelines.
• Integrate security seamlessly into development workflows.

Skills

Application security

CI/CD security

Automation

Software engineering fundamentals

Offensive security

Job description

About Unlimit

Unlimit is a global fintech ecosystem built to eliminate financial borders holding businesses back. The company provides the extensive infrastructure needed to scale globally, integrating payment processing, multi-currency business accounts, BaaS and crypto gateways into a single, intelligent platform.

Across 17 offices globally, Unlimit bridges hyper-local expertise with a high-capacity financial network, giving companies the agility to expand across regions with operational confidence and speed. Driving the evolution of payments, Unlimit is transforming its infrastructure from human-operated fintech into AI-native financial infrastructure — where APIs are consumed by machines, integrations are negotiated by agents, and systems evolve continuously through intelligent automation. Our next users are not only humans. They are AI agents acting on behalf of humans and businesses.

Unlimit serves more than the needs of businesses today; we are building the nervous system for a borderless global economy.

Your Challenge

As a Senior Application Security Engineer, you’ll be a hands-on technical expert responsible for improving the security of Unlimit’s applications, APIs, and development processes. You’ll help engineering teams identify and remediate security risks early, automate security testing, and integrate security seamlessly into modern CI/CD pipelines.

This role is ideal for someone who combines strong software engineering fundamentals with practical offensive security knowledge and enjoys building scalable, developer-friendly security solutions through automation and AI.