Senior Full-Stack Engineer

Bitdefender
Bucharest, Romania
On-site

Who this role is best for

Cybersecurity professionals with backend engineering expertise and AI integration experience will find this role in Bucharest offers a chance to lead technical design in a high-growth environment.

Best fit for

  • Candidates with at least five years of experience delivering complex systems and a backend focus in cloud environments
    — “at least five years of software engineering experience and a proven track record of independently delivering complex production systems”
  • Individuals who have worked on AI-powered systems and understand their integration into production applications
    — “experience building or integrating AI-powered systems into production applications”
  • Engineers comfortable with distributed systems and cloud-native architectures who value collaboration across teams
    — “collaborate with engineering, product, QA, security, and other stakeholders to clarify requirements”

Things to consider

  • The role demands ownership of features from discovery to ongoing improvement
    — “Own features throughout their lifecycle, from discovery and implementation to testing, deployment, monitoring, and ongoing improvement”
  • Strong emphasis on secure coding and automated testing practices is expected
    — “You write secure, maintainable code and apply appropriate automated testing practices”

How to stand out

  • Highlight your experience with cloud-native architectures and AI integration in your resume and interview responses
    — “Use AI-assisted tools, automation, and appropriate new technologies to improve engineering quality”
  • Showcase your ability to make sound architectural decisions and document trade-offs in past projects
    — “Lead the technical design and delivery of complex features and services, making sound architectural decisions”
  • Demonstrate your comfort with ambiguous requirements and your ability to define practical delivery paths
    — “You are comfortable working with ambiguous requirements, identifying risks, making technical trade-offs”
Pace · Fast PacedCollaboration · HighAutonomy · MediumDecision Impact · Team

Derived from job-description analysis by Serendipath's career intelligence engine.

What success looks like

  • design and deliver complex features and services
  • monitor production systems
  • collaborate with stakeholders
  • provide code and design reviews
Typical background
Bachelor's degree in computer science, engineering, or a related field5+ years of software engineering experience

Skills & requirements

Required

CybersecurityFull-stack DevelopmentCloud Application ProtectionBackend DevelopmentFrontend DevelopmentCloud-based ApplicationsDistributed ServicesAutomated TestingCode ReviewsEngineering Practices

Preferred

Ai-assisted ToolsAutomationNew Technologies

Stack & domain

PythonPHPTypescript/javascriptSQLNoSQLAi-assisted ToolsAutomationCloud SecurityEndpoint ProtectionTeamworkProblem-solvingCommunicationCuriosityFeedbackCybersecurityCloudData ProtectionDigital IdentityCyber Resilience

About the role

Original posting from Bitdefender via Greenhouse

Bitdefender is a cybersecurity leader delivering best-in-class threat prevention, detection, and response solutions worldwide. Guardian over millions of consumer, enterprise, and government environments, Bitdefender is one of the industry’s most trusted experts for eliminating threats, protecting privacy, digital identity and data, and enabling cyber resilience. With deep investments in research and development, Bitdefender Labs discovers hundreds of new threats each minute and validates billions of threat queries daily. The company has pioneered breakthrough innovations in antimalware, IoT security, behavioral analytics, and artificial intelligence and its technology is licensed by more than 180 of the world’s most recognized technology brands. Founded in 2001, Bitdefender has customers in 170+ countries with offices around the world. For more information, visit https://www.bitdefender.com

We are looking for motivated senior full-stack engineer (backend-focused) to join our  engineering team as part of a high-growth Cybersecurity company. You will be designing and building product features to bring Bitdefender's cutting-edge security technologies, from endpoint security to cloud application protection.

You have a strong interest in cybersecurity technology and enjoy the fast-paced and dynamic culture of building in the Cloud. You have a builder mindset and are always curious about emerging cybersecurity technology.

You will have the rare opportunity to gain insights on how Bitdefender protects and defends against malicious hackers for millions of users worldwide, from small business to large enterprise and law enforcement agencies.

You are an individual who is humble, values feedback, is curious and eager to be part of a winning team.

About the Role

Lead the technical design and delivery of complex features and services, making sound architectural decisions and documenting important trade-offs.

Own features throughout their lifecycle, from discovery and implementation to testing, deployment, monitoring, and ongoing improvement.

Deliver new capabilities while maintaining, improving, and scaling existing applications and data-processing services.

Monitor production systems, troubleshoot complex issues, participate in incident response, and implement improvements that prevent recurrence.

Collaborate with engineering, product, QA, security, and other stakeholders to clarify requirements, manage technical risks, and deliver successful outcomes.

Provide thoughtful code and design reviews, mentor other engineers, and help improve engineering practices across the team.

Use AI-assisted tools, automation, and appropriate new technologies to improve engineering quality and efficiency without introducing unnecessary complexity.

About You 

You have a bachelor's degree in computer science, engineering, or a related field, or equivalent practical experience.

You have at least five years of software engineering experience and a proven track record of independently delivering complex production systems.

You are proficient in one or more of Python, PHP, TypeScript/JavaScript, SQL / NoSQL databases systems and are comfortable contributing across frontend and backend systems.

You have experience designing, building, troubleshooting, and operating cloud-based applications and distributed services.

You write secure, maintainable code and apply appropriate automated testing practices.

You are comfortable working with ambiguous requirements, identifying risks, making technical trade-offs, and developing a practical path toward delivery.

You communicate concepts clearly and support other engineers through mentoring, feedback, documentation, and knowledge sharing.

You balance delivery speed with quality, maintainability, technical risk, and long-term product needs.

You have a growth mindset and proactively identify opportunities to automate repetitive engineering tasks, improve team efficiency, and expand your capabilities.

You have experience building or integrating AI-powered systems into production applications, with an understanding of how to evaluate their performance, reliability, security, and practical value.

Bonus Points if You Have 

Experience working effectively in distributed or remote-first teams.

Experience building cloud products, particularly in cybersecurity, cloud security, or endpoint protection.

Experience with CI/CD pipelines, containers, and Kubernetes.

Experience with MongoDB, Redis, or large-scale database systems.

Hands-on experience with AWS, Azure, or GCP services and cloud-native architectures.

Experience developing or integrating AI-powered solutions.

#LI-BM1

Source: Bitdefender careers (Greenhouse)

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