Senior Backend .NET Core Developer
This is the employer's own posting, not a copy on a job board.
What we know
Is it still open?
Confirmed still open
Last checked 6h ago — checked against the employer's own applicant tracking system, which is the company answering directly.
We re-read the employer's own applicant tracking system and the posting was still there. That is the company answering directly.
How old is it?
Posted 147d ago
The date the source published, not the day we noticed it (2026-04-21). Last seen at its source just now.
Is it remote?
Marked remote on the employer's board
Their board carries a remote setting on this posting — a field they filled in, not wording we read. The location field names somewhere specific, which is usually where the team or the entity sits.
Who may apply?
Egypt
The description states no restriction of its own. This is the source's own tag.
Pay not stated
Similar roles pay €70.6k–104k/yr
Middle 50% of 40 listings that do state pay — Engineering · Senior · EMEA · EUR/year. This employer has published no salary; this is what comparable listings we hold disclose, never converted between currencies or periods. How this is calculated.
Skills named in the ad
Recognised terms only, from a fixed vocabulary — this is what CV matching compares against.
Carried by 1 source
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workable employer's own board first seen 10d ago · last seen just now
The listing
Position: Senior Backend .NET Core Developer
About us:
We develop smart, sustainable, and scalable digital solutions that help organizations simplify and manage business processes efficiently and effectively, transform data into decisions, and unlock new opportunities for growth and innovation.
Website: www.lamdax.sa
Role Overview
We are seeking a Senior Backend .NET Core Developer to design and implement highly scalable microservices using Domain-Driven Design (DDD), event-driven architectures, and gRPC APIs. You’ll build performance, secure data layers with EF Core and MS SQL Server, integrate robust authentication/authorization, and drive best practices across the team.
· Architect & develop microservices – apply DDD to define bounded contexts and aggregates; implement CQRS; build modular .NET Core services
· Design event-driven solutions – implement publish/subscribe workflows with RabbitMQ/Azure Service Bus/Kafka; handle event contracts, serialization, idempotency
· Optimize data access & performance – model schemas in MS SQL Server; tune EF Core queries; profile and resolve bottlenecks (caching, indexing, async patterns)
· Enforce security & compliance – integrate JWT, OAuth 2.0/OpenID Connect (OpenIddict/IdentityServer); apply secure coding practices, encryption, secrets management
· Collaborate & mentor – partner with Product Owners, QA, Front-end, and Mobile teams to clarify requirements; lead code reviews and share best practices
· Estimate & plan – provide high-level effort estimates with strong accuracy and adjust plans under pressure
Required Qualifications
· Bachelor’s in Computer Science/Engineering or equivalent
· 6+ years hands-on .NET Core and C# experience; deep understanding of both .NET Framework and .NET Core
· Deep understanding of microservices and distributed systems programming models
· Proven background in event-driven architectures (pub/sub, event sourcing)
· Expert with Entity Framework Core and MS SQL Server (T-SQL, indexing, migrations)
· Solid experience with authentication & authorization frameworks (JWT, OAuth2, OpenID Connect)
· Strong knowledge of GOF design patterns and SOLID principles
· Strong understanding of network fundamentals (HTTP, TCP/IP)
· Demonstrated ability to profile and optimize high-throughput services
· Strong experience with multithreading programming models
· Excellent analytical, problem-solving, estimation, and communication skills
· Agility and ability to work effectively under pressure while keeping commitments