Application Security Engineer

Big Stars is an end-to-end product engineering company based in Belgrade, Serbia. We create a space where people take initiative and go big.

We focus on:
- turning outdated systems into high-performing engines
- creating clean products that users actually love
- designing stable and secure environments
- building complex tech products

We invite a Senior Application Security Engineer to join our team on-site.

‼️ This is a 100% office-based role – no remote or hybrid options. We provide relocation support if your current location is different.

✅ Responsibilities:
✔️ Demonstrated ability to collaborate with other teams to achieve complex objectives.
✔️ Responsible for security architecture design from cloud infrastructure to application through the implementation of "secure by design" principles.
✔️ Collaborate with product managers, architects, and developers on the implementation of the security controls platform ecosystem and products.
✔️ Proof security implementations within infrastructure and application deployment manifests and the CI/CD pipelines.
✔️ Define required policies, controls, and capabilities for the protection of products and environments.
✔️ Build and validate declarative threat models automation.
✔️ Participate in engineering teams’ product planning cycles and committees.
✔️ Oversee the product security aspects for migration of products and services from Data Center to public cloud, e.g., AWS.
✔️ Serve as a trusted cyber security advisor to product and application teams.

✅ Minimum Requirements:
✔️ Experience integrating security scanning/tooling into the development pipeline.
✔️ Experience in analysing and securing microservices and applications developed using JavaScript and Typescript.
✔️ Experience with CI/CD pipelines (such as Gitlab, Jenkins) and infrastructure-as-a-code models (such as Terraform, Helm, or CloudFormation).
✔️ Hands-on development experience in Python/shell scripting.
✔️ Strong understanding of supply chain security, software integrity, and secure software delivery.
✔️ Experience with Docker and mesh technologies (such as ISTIO).
✔️ Experience with architecture and security reviews, threat modelling, and application risk is highly desired.
✔️ Experience working with Agile methodologies.
✔️ Knowledge of privacy laws and regulations, such as GDPR desired.
✔️ Familiarity with industry regulations, frameworks, and practices. For example, PCI, ISO 27001, NIST, etc.

✅ PREFERRED QUALIFICATIONS:
✔️ In-depth experience with architecting secure services on Kubernetes.
✔️ Extensive experience with architecting secure services on AWS or on-prem data centers.
✔️ Security-related professional certifications e.g., CISSP, CISM, CCSK, CCSP, CEH, are highly desirable.

✅ We offer excellent benefits, including but not limited to:
🏝 24 vacation days annually 
🤒 6 sick days without a medical certificate 
🏥 Premium Health Insurance (coverage up to 5,000 EUR annually) 
🎉 Special occasion gifts: birthday, wedding, newborn 
📚 Learning & Development budget (for conferences, courses and certifications) 
🌍 Corporate events: international parties, team buildings, activities 
📈 Career growth opportunities in a fast-growing company 
✈️ Relocation package for international candidates 
🏋️ Sports package (FitPass membership) 
🗣️ Language classes: Serbian & English (company-covered)

Big Stars paves the way to excellence by helping people grow.