Software Engineer

CAMP Systems Private Limited; Polska; Hybrid; PLN 394,000 - 551,000; Full time

Job summary

CAMP Systems Private Limited is seeking a senior .NET API engineer for a remote role. You will design and extend GraphQL APIs over Quantum ERP data, ensure efficient data access with EF Core and Oracle, and fortify security with JWT-based authentication.

You will also write tests and help align API behavior with business rules across multi-tenant environments. You will collaborate with front-end and backend teams, document schemas, and contribute to performance benchmarking while delivering

Qualifications

• 4+ years building production APIs in C# / .NET (ASP.NET Core or Web API).
• Strong object-oriented C# and layered service architecture.
• Hands-on EF Core/EF6 and strong SQL; Oracle experience is a plus.
• Practical understanding of API security: JWT / bearer tokens.
• Proven unit tests experience and code coverage.
• Experience with ERP data models (finance / inventory).
• Clear written communication; document schemas and questions.

Responsibilities

• Design, build, and maintain GraphQL types, queries, mutations, and resolvers for Quantum ERP data.
• Extend EF Core data layer and Oracle wrappers; write efficient queries.
• Optimize GraphQL execution; use DataLoader to avoid N+1 queries.
• Maintain JWT-based authentication and multi-tenant scope.
• Translate business processes into API behavior consistent with Quantum rules.
• Write and maintain unit tests across API, business, and data layers.
• Support Angular client and keep schema/contracts in sync.
• Contribute to worker scheduled tasks and code reviews.
• Document graph types and Oracle dependencies surface relies on.
• Coordinate early with parity teams to avoid duplicating capability.

Skills

C# / .NET

EF Core / EF6

SQL

JWT / API security

Unit testing

ERP data modeling

Documentation & communication

Tools

GraphQL

Oracle

DataLoader

Job description

CAMP Systems Private Limited | Full time

CAMP Systems is the industry’s leading Aircraft Maintenance and Regulatory Compliance Management solution for fixed and rotor wing aircraft. CAMP’s product suite includes Maintenance Management, Engine Health Monitoring, Inventory Management, Flight Scheduling and shop floor Enterprise Information Systems. The key to CAMP solutions is our Aircraft Analysts who are experienced aviation professionals with a deep knowledge of your aircraft model and its specific maintenance programs and requirements. Today, CAMP supports 20,000 aircraft, 32,000 engines, and 1,500 maintenance facilities. The company has a long standing history of excellence and is the factory recommended maintenance tracking provider for Airbus ACJ, Beechcraft, Bell, Boeing BBJ, Bombardier, Cessna, Daher, Dassault, Embraer, Gulfstream, HondaJet, Leonardo, Piaggio, Pilatus, Viking, and numerous other aircraft. CAMP is the exclusive Engine Health Monitoring provider for all Pratt & Whitney Canada engines and for Honeywell TFE, HTF and TPE engines. CAMP is committed to providing the highest quality products and services to the business aviation community across the globe. CAMP is privately held by Hearst.

Job Description

This is a remote position.

• Design, build, and maintain GraphQL graph types, queries, mutations, and resolvers that expose Quantum ERP data (work orders, purchase orders, GL/AP/AR, companies, inventory) accurately and safely.
• Extend the Entity Framework Core data layer and Oracle package wrappers and repositories, writing correct, performant queries against the Quantum Oracle schema.
• Optimize GraphQL execution: use DataLoader to avoid N+1 queries, apply sensible result limits, and keep resolver work efficient.
• Maintain JWT-based authentication and authorization and respect multi-tenant scoping on every request and query.
• Translate business-layer process steps into API behavior that maintains parity with Quantum's business rules.
• Write and maintain unit tests across the API, business, and data layers, and use the benchmark projects to catch performance regressions.
• Support the Angular client where it consumes the GraphQL API, and keep the schema and client contract in sync.
• Contribute to worker scheduled tasks where API and background work overlap.
• Document graph types, queries, and the Oracle-side dependencies each surface relies on.
• Participate in code review, the weekly integration sync, and discovery sessions, and coordinate early with the Corridor / Aviate parity teams so we do not build the same capability two ways.

Requirements

• 4+ years building production APIs in C# / .NET (ASP.NET Core or ASP.NET Web API).
• Strong object-oriented C# and a solid grasp of layered service architecture (data, business, API).
• Hands-on Entity Framework (EF Core or EF6) and strong SQL. Comfortable reading schemas, writing efficient queries, and reasoning about ORM behavior and N+1 problems. Oracle experience is a strong plus.
• Practical understanding of API security: JWT / bearer tokens, authentication and authorization, and input validation.
• A track record of writing unit tests and treating test coverage as part of the definition of done.
• Comfort working against real business or ERP data models where correctness and auditability matter (finance, accounting, or inventory domains).
• Clear written communication and the discipline to document schemas and open questions.