Lead C++ Software Engineer

Role : Lead C++ Software Engineer

Skills: Modern C++ (17/20/23), Multithreading, Data Structures, NoSQL data modeling, CI/CD toolchains (GitHub Actions); scripting (Python/Bash)

Location Cracow Poland, (Hybrid preferred)

Type: B2b/UoP

Role and Responsibilities

• Own technical design and architecture for mission-critical C++ backend services, driving scalability, performance, and long-term maintainability
• Provide technical leadership by mentoring engineers, leading design reviews, and establishing engineering standards and best practices
• Design, implement, and evolve high-performance, low latency microservices using modern C++ within CI/CD ecosystem
• Drive performance optimization across distributed systems, including advanced multithreading, memory management, and profiling in a cloud-native (GCP, containerized) environment
• Design, execute, and analyze performance, load, stress, and scalability tests to identify bottlenecks and validate system behavior under production-like workloads
• Perform application profiling and performance diagnostics, driving continuous improvements in latency, throughput, resource utilization, and overall system efficiency
• Own service lifecycle quality, including reliability, security, observability, and integration with platform services
• Act as the technical escalation point for complex issues, leading root-cause analysis, post-incident reviews, and systemic improvements
• Collaborate with Product and Architecture teams to translate business requirements into robust, scalable technical solutions

Approach and Behaviors

• Own the outcome end-to-end
• Set and maintain high engineering standards
• Lead through clear decisions and trade-offs
• Mentor and support the team
• Communicate early and work well across teams

Qualifications and Education Requirements

• Minimum 5+ years of professional experience as a C++ Developer, and 2+ years as a Team Leader
• Bachelor’s degree in computer science or a related field
• Expertise in: Modern C++ (17/20/23), Multithreading, Data Structures, and performance tuning (memory management, low-latency optimization)
• Proficiency in the C++ Standard Library (STL) and Boost C++ Libraries
• Expertise in: GCP Pub/Sub, and REST/JSON APIs (gRPC is nice to have)
• Understanding of: OAuth2, JWT, and cloud security best practices
• Solid knowledge of algorithmic thinking and distributed systems architecture, including consistency, durability, and failure/resiliency considerations
• Fluency in Git-based workflows and large-scale CI/CD toolchains (GitHub Actions); scripting (Python/Bash) to support automation, tooling, and operations
• Strong understanding of NoSQL data modeling and document design, including denormalization strategies and evolution/versioning of schemas
• Experience building migration/ETL processes, data backfills, and reconciliation/validation tooling to ensure functional equivalence during cutover
• Strong understanding of object-oriented programming principles, common design patterns, and clean code best practices
• Good Unix/Linux knowledge and experience developing, debugging, profiling, and operating services in Linux environments (including large-scale/legacy codebases)
• Experience working with AI Tools (Copilot/Agentic)
• Experience migrating or modernizing persistence layers, including rewriting applications from legacy object databases (e.g., Versant) to distributed NoSQL platforms (e.g., Couchbase)
• Hands-on experience with Couchbase, including buckets, scopes/collections, indexing, N1QL querying, and use of Couchbase SDKs (C++ preferred)

Nice To Have Skills:

• Travel/airline domain experience with understanding of airline inventory workflows and ability to translate business needs into technical solutions