Senior Application Security Engineer

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Senior Application Security Engineer

Type of employment:Full time jobPlace of employment:Kyiv, Ukraine

Responsibilities

• Assess the existing AI-native platform, mapping architecture, APIs, sensitive data flows and trust boundaries; prioritize security findings and remediation.
• Review code for authentication, authorization, input handling, data isolation, secrets and privileged operations; reproduce vulnerabilities and verify fixes.
• Secure AI agent identities, tool permissions, data access, execution isolation and third-party integrations.
• Test prompt injection and tool misuse scenarios; implement approvals, execution limits, interruption and recovery controls for sensitive actions.
• Establish secure review practices for AI-generated code, with accountable engineering owners and specialist review of security-sensitive changes.
• Integrate code, dependency, secret and deployment security checks into CI/CD, and create meaningful security regression tests.
• Review AI coding agents' access to repositories, credentials and deployment systems; coordinate independent testing and ensure critical/high-risk findings are resolved and retested before release.

Requirements

• Strong software engineering background and the ability to review, debug and modify production code.
• Hands-on experience building or significantly contributing to an AI agent platform, including implementing and validating security and safety controls.
• Proven application security and architecture review experience, including finding, fixing and retesting vulnerabilities.
• Solid knowledge of authentication, authorization, API security, data isolation, secrets management and secure cloud deployment.
• Experience with manual code review, security testing and automated analysis, and the ability to distinguish genuine security risks from tool noise.
• Practical experience using AI development tools while independently checking generated code, tests and configuration changes.
• Clear English communication skills and the ability to collaborate with developers, architects and engineering leads.

As A Plus

• Hands-on application penetration testing and familiarity with OWASP ASVS or comparable application security standards.
• Experience introducing secure development practices into teams using AI coding agents.
• Security assessment of agent runtimes, tool servers, retrieval systems and third-party integrations.

We Offer

• Competitive salary
• Flexible schedule
• Social package
• Courses, webinars, and seminars to increase professional skills
• Possibility to work remotely and onsite
• Horizontal hierarchy. No micromanagement pressure
• Open company culture where your ideas and initiatives are valued
• Regular team building & corporate events
• International projects

Benefits of working in Edsson

• Growth

  At Edsson we welcome growth on a professional and personal level. We apply incentive programs to motivate our team.

• Education

  We strongly believe in education and provide our employees with additional resources for professional improvement.

• Innovation

  We thrive in an innovative environment and keep up to date with the latest software trends and development.

Comfortable office

We work from modern offices, filled with greenery and positive energy. Our team consists of friendly and supportive professionals. At Edsson there’s always place for growth and self-improvement. There’s time for work and time for pleasure. Our team enjoys team building and corporate events. Our parties are fun and amazing. Join us.

Regular events

There’s time for work and time for pleasure. Our team enjoys team building and corporate events. Our parties are fun and amazing. Join us.

Friendly team

Our team consists of friendly and supportive professionals. At Edsson there’s always place for growth and self-improvement.

Submitting a resume

Resume processing

and initial acquaintance

Technical interview

Job offer

FAQ

The trial period for all employees is the same and lasts three months.

We apply a standard 8-hour workday and schedule is flexible and can be adjusted.

All the Ukrainian holidays are taken into account, and employees take days off according to the holidays.

If an employee works overtime, this is reflected in the payroll.

We have a social package for employees and sick leaves are covered.

Regular vacation entitlement will be 24 (twenty-four) calendar days per annum.

This is discussed individually with each employee. The decision is taken considering employee's best interests.

Definitely. Each employee can grow professionally in the company and has a personal mentor.

Once a year planned evaluations take place. Employees’ salary increases based on their qualifications and performance evaluation.

Edsson provides additional resources for professional development according to employee’s needs and requirements.

Edsson is interested in employee's professional growth. Our top professionals participate in local and international events and conferences.