Senior C++ Software Engineer

TL;DR

Senior C++ Software Engineer: Building high-performance C++ components and libraries for local and cloud-based data workflows underpinning Bentley's product ecosystem with an accent on SQLite-backed iModels, performance optimization, and scalability. Focus on profiling CPU/memory/I/O/multithreading, enhancing storage engine internals, and ensuring determinism across desktop, iTwin, Cesium, and cloud services.

Location: Vilnius or Kaunas, Lithuania (Office-Based or Hybrid). Ability to work fully remote from home.

Salary: from 4000 EUR gross (Lithuania, before taxes), depending on experience.

Company

World-leading software company providing solutions for architecture, engineering, construction, and infrastructure digital twins.

What you will do

• Build high-performance C++ components and maintain structured, versioned libraries with clear APIs and documentation.
• Ensure correctness, determinism, and performance of SQLite-backed iModels across local and CloudSQLite workflows.
• Profile and optimize CPU, memory, I/O, multithreading; contribute to storage engine internals like file formats, indexing, transactions.
• Debug and validate software in virtualized/containerized environments; enhance observability with metrics, tracing, logs.
• Expand automated testing, benchmarking, performance gates, and API compatibility.
• Deliver features, lead medium-sized designs, improve shared infrastructure; collaborate via GitHub, design reviews.

Requirements

• Bachelor’s or Master’s in Computer Science, Engineering, or equivalent.
• Strong proficiency in modern C++ (C++17/20) and shipping production systems.
• Optimizing performance-critical code (CPU, memory, I/O, synchronization).
• Understanding of concurrency, multithreading, race conditions, deadlocks.
• Building shared libraries, SDKs, platform components with stable APIs.
• Strong testing discipline: unit, integration, performance tests, benchmarks.
• Experience with backend services, APIs, data workflows in local/cloud.
• Familiarity with observability (metrics, tracing, logs); problem-solving, communication.

Nice to have

• Distributed systems (retries, idempotency, backpressure).
• SQL/SQLite storage engines, indexing, transactions.
• Sanitizers, fuzzing, stress testing.
• Cross-platform (Windows/Linux; MSVC/Clang/GCC).
• Docker/VM environments.
• API versioning, compatibility practices.
• TypeScript/JavaScript experience.

Culture & Benefits

• Great team and inclusive culture with global initiatives and resource groups.
• Attractive salary, health/accidents insurance 24/7, additional leave (marriage, moving, bereavement, volunteering).
• Training, certifications, conferences, professional development.
• Referral bonuses.
• Commitment to sustainable infrastructure and colleague wellbeing.