Principal C++ Architect

Coforge; Kraków; Hybrid; PLN 260,000 - 380,000; Full time

Job summary

Coforge Kraków is seeking an experienced senior C++ software engineer to own the design and delivery of mission-critical backend services. You will champion modern C++ practices, multithreading, and low-latency architectures in a hybrid work setup.

You will collaborate across product and architecture teams to define standards, optimize performance, and ensure reliability in a cloud-native GCP environment with CI/CD.

Qualifications

• 8+ years of professional C++ software engineering experience.
• Expert in Modern C++ (17/20/23) and performance engineering.
• Strong Linux/Unix development, debugging, and profiling skills.
• Experience with NoSQL data modeling and distributed systems.

Responsibilities

• Own technical design and architecture for mission-critical C++ backend services.
• Lead end-to-end execution of business and technical features.
• Define architecture standards and best practices across services.
• Design and evolve high-performance, low-latency microservices in CI/CD.
• Drive performance optimization across distributed systems in a cloud-native (GCP, containers) environment.
• Lead capacity planning and architectural reviews for future growth.
• Plan and execute performance, load, stress, endurance testing strategies.
• Own service reliability, observability, security, and disaster recovery.
• Act as technical escalation point for production issues and root-cause analysis.
• Collaborate with Product and Architecture to translate requirements into solutions.
• Evaluate emerging technologies and drive adoption where appropriate.

Skills

Modern C++

Multithreading

Data Structures

NoSQL data modeling

CI/CD toolchains

Scripting

Education

Bachelor's degree in CS or related field

Tools

GCP

Pub/Sub

REST/JSON APIs

GitHub Actions

Boost C++ Libraries

gRPC

Job description

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, resiliency, and long-term maintainability
• Lead the end-to-end execution of business and technical features
• Define architecture standards, engineering best practices, and technical direction across multiple services and domains
• Design, implement, and evolve high-performance, low latency microservices using modern C++ within a CI/CD ecosystem
• Drive performance optimization across distributed systems, including advanced multithreading, memory management, profiling, benchmarking, and performance engineering in a cloud-native (GCP, containerized) environment
• Design and review scalable distributed architectures capable of handling high-throughput, mission-critical transaction workloads with strict latency and availability requirements
• Lead capacity planning, scalability assessments, and architectural reviews to ensure systems can support future business growth and traffic demands
• Design, execute, and analyze performance, load, stress, endurance, and scalability testing strategies to identify bottlenecks and validate system behavior under production-scale workloads
• Own service lifecycle quality, including reliability, security, observability, disaster recovery, and integration with platform services
• Act as the technical escalation point for complex production 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
• Evaluate emerging technologies and architectural approaches, providing technical recommendations and driving technology adoption where appropriate

Qualifications And Education Requirements

• Minimum 8+ years of professional experience as a C++ Software Engineer, including significant experience in designing and architecting large-scale distributed systems
• Bachelor’s degree in computer science or a related field
• Expertise in Modern C++ (17/20/23), Multithreading, Data Structures, Algorithms, and Performance Engineering
• 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)
• Strong understanding of distributed systems architecture, including consistency, durability, scalability, fault tolerance, resiliency, and failure recovery patterns
• Proven experience designing, optimizing, and operating high-throughput, low-latency, business-critical systems in production environments
• Deep expertise in performance tuning including memory management, CPU optimization, concurrency, profiling, benchmarking, and bottleneck analysis
• Hands-on experience with performance testing, load testing, stress testing, endurance testing, and scalability validation
• Experience using performance analysis and observability tools such as perf, Valgrind, gprof, Google Benchmark, Grafana, Prometheus, OpenTelemetry, Flame Graphs, or equivalent
• Understanding of OAuth2, JWT, and cloud security best practices
• 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, clean code practices, and software architecture patterns
• 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)

Nice To Have Skills

• Travel/airline domain experience with understanding of airline inventory workflows and ability to translate business needs into technical solutions
• Experience architecting inventory, reservation, retailing, pricing, or other high-scale transaction processing platforms
• Experience defining technical strategy and architecture roadmaps across multiple teams or product domains