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3Pillar Global Logo 3Pillar Global · IT - Software Development

Senior Software Engineer - C/C++ (LLVM compilers)

Romania · Job Posted January 07, 2026
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Job Description

Elevate your expertise to new heights at 3Pillar, the premier destination for trailblazing senior software engineers like yourself. Picture collaborating with industry leaders, spearheading transformative projects that redefine urban living, establishing new media channels for enterprise companies, or driving innovation in healthcare. Our mission is to revolutionize the tech landscape, and your skills are integral to achieving this ambitious goal. Your role extends beyond the realm of code composition; you will architect transformative solutions that reshape entire industries. Join us and spearhead the charge toward a tech future that transcends the ordinary.

Job Responsibility

  • Facilitate effective communication with client project stakeholders regarding project status and recommendations.
  • Craft client code that is not just efficient but also performant, testable, scalable, secure, and of the highest quality.
  • Actively participate in accurate planning and estimation efforts, utilizing project methods and tools.
  • Proficiently gather requirements and organize/present developed features for clients.
  • Execute complex activities within the current methodology and quality standards, showcasing success across diverse engagements.
  • Promote client success across the team by collaborating with engineers, designers, and managers to understand user pain points, anticipate potential problems, and iterate on solutions that drive client success.
  • Engage in agile software development, including daily stand-ups, sprint planning, team retrospectives, and other governance activities.
  • Actively participate in the Engineering Practice community, mentoring others through Communities of Practice (CoPs) or on project teams and supporting the growth of technical capabilities.
  • Independently drive project delivery within defined architecture, demonstrating autonomy and accountability in all stages from conceptualization to deployment.

Requirements

  • A minimum of 5+ years of experience/expertise in the following areas specified below*:
  • C/C++ 5 years of experience
  • Linux 3 years of experience
  • Linux Application Skills: Experience debugging a complex software stack on Linux
  • Contributions to LLVM/Clang and other open source compiler projects
  • Strong compiler development skills. LLVM and CLang (Strongly prefer)
  • Knowledge of state-of-art compilers, developer and productivity tools
  • Experience in Agile software development methodologies.
  • Good understanding of code integration tools (e.g. Git and github)
  • Expertise in applying Object-Oriented Programming principles (abstraction, encapsulation).
  • Experience in creating and implementing well-tested, scalable, and performant enterprise-level systems.
  • Practice and initiative mentoring other engineers and decision-makers throughout the organization.
  • Good understanding of SOLID principles.
  • Good knowledge of REST API and serialization formats
  • Have an intermediate understanding of networking principles
  • Familiarity with OWASP.
  • Proficiency in the English language.

Nice to have

  • Architectural and Design Patterns
  • Unit Testing
  • Containers using Docker/Kubernetes
  • Specific client-engagement technologies, which will be determined and vetted at the time of the interview.

What we offer

  • flexible work environment – whether it's the office, your home, or a blend of both
  • remote-first approach
  • part of a global team, learning from top talent around the world and across cultures
  • wellbeing – fitness offerings, mental health plans (country-dependent), generous time off
  • accelerate career growth and development opportunities - across projects, offerings, and industries.
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