{"id":2365884,"url":"https://alion.io/job/lamdax-senior-backend-net-core-developer","title":"Senior Backend .NET Core Developer","company":{"id":4416538,"name":"Lamdax","domain":"lamdax.sa","url":"https://alion.io/company/lamdax-2","size_band":null,"is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Workable","truth_index":{"grade":"B","score":75,"open_postings":5,"ghost_share":0,"stale_share":1,"repost_share":0,"time_to_fill_p50_days":null,"computed_at":"2026-10-13T05:45:00Z"}},"role":"Backend","role_family":"Backend","seniority":"senior","employment_type":"contractor","work_mode":"remote","remote_scope":"stated_countries","remote_scope_basis":"board_field","remote_working_hours":null,"hiring_geo_confidence":"structured","locations":[],"countries":[],"hiring_countries":["EG"],"hiring_countries_total":1,"salary":null,"salary_estimate":{"min_usd":64000,"max_usd":186000,"period":"year","method":"global_role_cell_scaled_by_country","sample_n":6426},"experience_years_min":null,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":".NET","optional":false},{"name":"Apache Kafka","optional":false},{"name":"Azure","optional":false},{"name":"C#","optional":false},{"name":"Entity Framework Core","optional":false},{"name":"IdentityServer","optional":false},{"name":"MS SQL","optional":false},{"name":"RabbitMQ","optional":false},{"name":"TCP/IP","optional":false},{"name":"gRPC","optional":true}],"status":"live","first_seen_at":"2026-04-21T00:00:00Z","employer_posted_date":"2026-04-21","last_verified_at":"2026-10-13T14:50:59Z","board_verified":true,"closed_at":null,"days_open":175,"trust":{"level":"stale","repost_count":0,"flags":["stale"],"days_open":175},"description":"Position: Senior Backend .NET Core Developer\nAbout us:\nWe 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.\nWebsite: www.lamdax.sa\nRole Overview\nWe 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.\n· Architect & develop microservices - apply DDD to define bounded contexts and aggregates; implement CQRS; build modular .NET Core services\n· Design event-driven solutions - implement publish/subscribe workflows with RabbitMQ/Azure Service Bus/Kafka; handle event contracts, serialization, idempotency\n· Optimize data access & performance - model schemas in MS SQL Server; tune EF Core queries; profile and resolve bottlenecks (caching, indexing, async patterns)\n· Enforce security & compliance - integrate JWT, OAuth 2.0/OpenID Connect (OpenIddict/IdentityServer); apply secure coding practices, encryption, secrets management\n· Collaborate & mentor - partner with Product Owners, QA, Front-end, and Mobile teams to clarify requirements; lead code reviews and share best practices\n· Estimate & plan - provide high-level effort estimates with strong accuracy and adjust plans under pressure\nRequired Qualifications\n· Bachelor’s in Computer Science/Engineering or equivalent\n· 6+ years hands-on .NET Core and C# experience; deep understanding of both .NET Framework and .NET Core\n· Deep understanding of microservices and distributed systems programming models\n· Proven background in event-driven architectures (pub/sub, event sourcing)\n· Expert with Entity Framework Core and MS SQL Server (T-SQL, indexing, migrations)\n· Solid experience with authentication & authorization frameworks (JWT, OAuth2, OpenID Connect)\n· Strong knowledge of GOF design patterns and SOLID principles\n· Strong understanding of network fundamentals (HTTP, TCP/IP)\n· Demonstrated ability to profile and optimize high-throughput services\n· Strong experience with multithreading programming models\n· Excellent analytical, problem-solving, estimation, and communication skills\n· Agility and ability to work effectively under pressure while keeping commitments","description_format":"text","description_chars":2514,"description_truncated":false,"requirements":{"experience_years_min":null,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":{"level":"bachelor","optional":false},"security_clearance":false,"languages":[]},"benefits":[],"hiring_locations":[{"name":"Egypt","iso":"EG","kind":"country"}],"hiring_excludes":[],"relocation_offered":false,"industries":[],"lifecycle":[{"event":"open","at":"2026-10-12T16:39:05Z"}],"visa":[],"liveness":{"score":7,"band":"cold","label":"Long shot","p_open":1,"p_active":0.239,"p_room":0.28,"age_days":175,"expected_fill_days":29,"reasons":["conf:2","win:tail","crowd:"],"computed_at":"2026-10-13T05:45:00Z"},"pay":null,"html_url":"https://alion.io/job/lamdax-senior-backend-net-core-developer","json_url":"https://alion.io/job/lamdax-senior-backend-net-core-developer.json","meta":{"generated_at":"2026-10-13T16:56:41Z","cache_seconds":300,"methodology":"https://alion.io/methodology","terms":"https://alion.io/terms","contact":"https://alion.io/contact","api":"https://alion.io/developers","about":"Alion is a live layer of people, companies and AI agents: who they are, whether they are real and active right now, what they do and how to work with them, readable by people and by agents and paid per call.","catalog":"https://alion.io/catalog.json","usage":{"tier":"crawler_verified","counted_by":"address","units_charged":1,"used_today":25761,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-10-14T00:00:00Z"}},"offers":[{"id":"company.slices","title":"One company in depth, by slice","status":"live","price":{"credits":0.02,"usd":0.002,"plus_per_slice":{"credits":0.05,"usd":0.005}},"unit":"per company, plus each slice with data","note":"the employer in depth","call":{"mcp_tool":"get_company","arguments":{"id":4416538},"rest":"https://alion.io/mcp/rest/get_company?id=4416538"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Flamdax-senior-backend-net-core-developer"},{"id":"market.stats","title":"A market slice: pay, demand and time to fill","status":"live","price":{"credits":1,"usd":0.1},"unit":"per slice","note":"pay, demand and time to fill for this role and place","call":{"mcp_tool":"market_stats"},"human":"https://alion.io/catalog?offer=market.stats&for=job%2Flamdax-senior-backend-net-core-developer"},{"id":"job.search","title":"Open jobs by role, technology, place, pay and visa","status":"live","price":{"credits":0.02,"usd":0.002},"unit":"per posting in a list","note":"similar open postings","call":{"mcp_tool":"search_jobs"},"human":"https://alion.io/catalog?offer=job.search&for=job%2Flamdax-senior-backend-net-core-developer"},{"id":"company.verify","title":"Is this company real and active right now","status":"pilot","price":null,"unit":"per company","request":{"url":"https://alion.io/catalog/request","method":"POST","body":"{\"offer\": \"company.verify\", \"for\": \"job/lamdax-senior-backend-net-core-developer\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Flamdax-senior-backend-net-core-developer"}]}