Senior Backend Engineer (C# / Azure)

Location: Vilnius or Kaunas, Lithuania (Hybrid)

Why Bentley Systems?

• A Genuinely Hard Problem: Scheduling synchronization - keeping large, interdependent construction schedules consistent across desktop and cloud, with concurrent edits, at scale.

• Innovative Projects: Work on SYNCHRO, a cutting-edge 4D construction planning and project management suite used on some of the world's largest infrastructure projects.

• Professional Growth: Continuous learning opportunities and clear paths for career advancement.

• Competitive Compensation: Salary starting from 5000 gross (before taxes, Lithuania), depending on experience and skillset.

• Flexible Work Environment: Hybrid setup with flexible working hours, alongside a passionate and talented team.

• Great Culture & Benefits: Supportive and collaborative culture, health insurance, additional annual leave days, and a pet-friendly office.

About the Role

Are you ready to start a new journey with a team of energized professionals advancing and connecting the world's infrastructure? Bentley is looking for a Senior Backend Engineer to help design, build, and operate the cloud services behind SYNCHRO.

A core part of this work is schedule synchronization. Construction schedules are large, densely interconnected graphs of tasks and dependencies, edited concurrently by multiple people across desktop and cloud, and often exchanged with external planning tools. Keeping them consistent - reconciling concurrent changes, preserving intent, and doing it reliably and fast at real-world scale - is one of the more interesting distributed-systems problems in our domain. If correctness under concurrency is the kind of problem you enjoy, you will find plenty of it here.

This is a senior role, and we mean it. You will own significant parts of our backend architecture end to end - from shaping requirements with product, through design and implementation, to running services in production. You will make technical decisions that outlive individual features, raise the engineering standard around you, and help others on the team grow.

We are looking for an engineer who is not only technically strong but also demonstrates ownership, accountability, and care for their work. We value engineers who care deeply about quality, maintainability, and long-term impact.

Your work will directly contribute to Bentley's mission of delivering innovative software and services for the enterprises and professionals who design, build, and operate the world's infrastructure - advancing both the global economy and environment for an improved quality of life.

Responsibilities:

• Schedule Synchronization: Design and build the services that keep schedule data consistent across clients and the cloud - handling concurrency, conflict resolution, and data integrity at scale.

• Architecture & System Design: Lead the design of backend services and APIs, with a focus on scalability, resilience, security, and maintainability. Make and document decisions with clear trade-offs.

• Implementation: Build and evolve cloud microservices in C# and modern .NET (10+), using ASP.NET Core and Azure platform services.

• Data: Design and optimize relational data models and queries; make deliberate choices about data access, caching, and consistency.

• Production Ownership: Operate what you build - instrumentation, monitoring, alerting, diagnosing and resolving production issues.

• Performance & Reliability: Profile and optimize services for throughput, latency, and cost; design for failure and graceful degradation.

• Testing: Drive a strong automated testing culture - unit, integration, and contract tests - and hold the bar in review.

• CI/CD & DevOps: Build and improve fully automated pipelines to production; follow DevOps practices from design through delivery.

• Security: Apply secure development practices - authentication and authorization, secrets management, and dependency hygiene.

• Technical Leadership: Mentor engineers, lead code and design reviews, and help set standards across the team.

• Collaboration: Work effectively with product managers, frontend and desktop engineers, QA, and the teams whose services we consume or who depend on ours.

Qualifications:

• Substantial professional experience (typically 5+ years) building backend systems in C#, including modern .NET (8/9/10).

• Strong experience with ASP.NET Core and designing well-structured HTTP APIs.

• Proven experience designing, deploying, and operating cloud microservices in production.

• Hands-on experience with a major cloud provider - Azure strongly preferred (e.g. Azure Functions, Azure Storage, Application Insights, Azure Batch).

• Experience with concurrency, data consistency, or conflict resolution in distributed systems - or a clear appetite to work on it.

• Strong relational database skills, including schema design and query performance - MSSQL/Azure SQL preferred.

• Practical experience with data access using EF Core and/or Dapper, and a clear view on when each fits.

• Experience with message-based and event-driven architectures, and with patterns such as CQRS and mediator.

• A test-driven mindset and a track record of building maintainable, well-tested systems.

• Solid CI/CD experience and comfort owning delivery all the way to production.

• Proficiency with Git and modern branching / review workflows.

• Understanding of the short- and long-term implications of technical decisions, and pragmatism about when to refactor and when to ship.

• Clear verbal and written communication skills, including with non-engineering stakeholders.

• Self-driven mindset with the ability to work both independently and collaboratively, and to mentor others.

Nice to Have

• Docker and Kubernetes, and experience running containerized workloads.

• PostgreSQL experience alongside SQL Server.

• Applied security experience - threat modelling, secure design reviews, or working to a security standard.

• Exposure to C++ or willingness to work across a C++/.NET boundary.

• Experience with Azure DevOps.

• Experience working in Scrum / Agile environments at scale.

About SYNCHRO

SYNCHRO is a cutting-edge 4D construction planning and project management suite that transforms how infrastructure projects are designed, built, and delivered. By combining model-based scheduling, real-time collaboration, and connected workflows, SYNCHRO enables stakeholders to stay aligned and make informed decisions.

Learn more about SYNCHRO here.

This is a Hybrid role.

What We Offer:

• Step into a collaborative work environment where ideas flourish, and teamwork propels us forward towards shared success.
• An attractive salary and benefits package.
• Bentley Impact Day: take a day off from work to volunteer with an organization of your choice.
• Celebrate milestone achievements and moments that matter through our colleague recognition award programs and our Bentley Achievers platform.
• A commitment to inclusion, belonging and colleague wellbeing through global initiatives and resource groups.
• Be part of a company committed to making a real difference by advancing the world’s infrastructure for better quality of life, where your contributions help build a more sustainable, connected, and resilient world. Discover our latest user success stories for an insight into our global impact.

Who We Are:

Bentley Systems (Nasdaq: BSY) is the infrastructure engineering software company. We provide innovative software to advance the world’s infrastructure - sustaining both the global economy and environment. Our industry-leading software solutions are used by professionals, and organizations of every size, for the design, construction, and operations of roads and bridges, rail and transit, water and wastewater, public works and utilities, buildings and campuses, mining, and industrial facilities. Our offerings, powered by the iTwin Platform for infrastructure digital twins, include MicroStation and Bentley Open applications for modeling and simulation, Seequent’s software for geoprofessionals, and Bentley Infrastructure Cloud encompassing ProjectWise for project delivery, SYNCHRO for construction management, and AssetWise for asset operations. Bentley Systems’ 5,200 colleagues generate annual revenues of more than $1 billion in 194 countries.

Equal Opportunity Employer:

Bentley is proud to be an equal opportunity employer and considers for employment all qualified applicants without regard to race, color, gender/gender identity, sexual orientation, disability, marital status, religion/belief, national origin, caste, age, or any other characteristic protected by local law or unrelated to job qualifications.