ASP.NET Core Web API jobs

Senior .Net Developer

ICONMA, LLC · Posted Nov 9, 2026

Open

Houston, Texas, United States
Hybrid
Senior
10+ years

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Senior .Net Developer

ICONMA, LLC · Posted Nov 9, 2026

Open

Houston, Texas, United States
Hybrid
Senior
10+ years

Apply with Referso

Solutions Engineer

American Express Global Business Travel · Posted Nov 2, 2026

Open

Manchester, England, United Kingdom
On-site
Full-time · Entry
3+ years

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Junior contributor working with software engineering team on business travel booking platforms, advancing REST APIs, developing new features, and supporting platform operations.

Responsibilities

Monitor and support existing platform processes
Manage back‑office support contracts and engineers
Capture requirements and build solutions
Troubleshoot and resolve production issues

Requirements

Nice to have: AI-related opportunities and solutions
Nice to have: Vendor management
Nice to have: Financial processes and terminology

Skills

C#.NET Core ASP.NET Core Web API SQL AWS cloud services Test‑Driven Development JIRA Software Development Lifecycle MS Excel

Software Engineer III, EMR Platform

Experity · Posted Aug 19, 2026

Open

Bengaluru, Karnataka, India
Mid
5+ years

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As a Senior Software Engineer, you will own complete features across our product portfolio—from API design through application delivery. You will contribute to event-driven services, real-time systems, and cloud-based healthcare applications.

Responsibilities

Architect and build production-grade REST APIs with full OpenAPI spec coverage
Design and own domain-driven services aligned to clinical workflows
Write comprehensive test suites — unit, integration, and contract tests
Build and maintain features across desktop and web-based healthcare applications, including real-time capabilities
Integrate with cloud services and event-driven workflows

Requirements

Nice to have: VB.NET
Nice to have: Python
Nice to have: LaunchDarkly
Nice to have: React
Nice to have: Next.js

Skills

C#.NET Core .NET Framework ASP.NET Core Web API WPF XAML MVVM

Software Engineer II, EMR Platform

Experity · Posted Aug 12, 2026

Open

Bengaluru, Karnataka, India
On-site
Full-time
5+ years

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Architect and build production-grade REST APIs, design domain-driven services for clinical workflows, and maintain features across desktop and web healthcare applications.

Responsibilities

Architect and build production-grade REST APIs with full OpenAPI spec coverage
Design and own domain-driven services aligned to clinical workflows
Write comprehensive test suites — unit, integration, and contract tests — and hold the team to that standard in code review
Build and maintain features across desktop and web-based healthcare applications, including real-time capabilities
Integrate with cloud services and event-driven workflows

Skills

C#.NET Core .NET Framework ASP.NET Core Web API WPF XAML MVVM LLBLGen Pro ORM TypeScript

Lead Software Engineer (Full Stack)

BPM LLP · Posted Nov 6, 2026

Open

Bengaluru, Karnataka, India
Senior
9+ years

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Lead a development team, own architecture and technical delivery across integrated web applications for a tax and professional services firm.

Responsibilities

Partner with Product Owner, business stakeholders, and vendors to clarify needs, assess feasibility, and shape the technical roadmap.
Lead estimates, dependencies, and scope trade-offs; communicate progress and elevate risks.
Set technology direction and design shared sign‑in, APIs, data contracts, and reusable components.
Guide intuitive navigation and interfaces with frontend engineer and users.
Build foundational components and complex features, review production code.

Requirements

Bachelor's degree in computer science, information technology, or a related field, or equivalent practical experience
Nice to have: tax
Nice to have: accounting
Nice to have: financial services
Nice to have: enterprise systems

Skills

.NET/C#Java/Spring Python Node.js JavaScript/TypeScript

Senior .NET Developer

Fulcrum Digital · Posted Nov 2, 2026

Open

Coimbatore, Maharashtra, India
Full-time · Senior
6–8 years

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We are looking for an experienced Senior .NET Developer with 6–8 years of strong hands-on experience in backend application development. The candidate should have a solid understanding of .NET, .NET Core, Web Services, REST APIs, HTTPS, SQL and GraphQL, along with experience in designing scalable backend solutions and integrating with external systems.

Responsibilities

Strong hands-on experience with C#, .NET and .NET Core.
Develop RESTful APIs and backend services using .NET Core.
Implement GraphQL Queries, Mutations, Schemas, Resolvers and GraphQL APIs.
Manage SQL Server databases including queries, joins, CTEs, and stored procedures.
Design and implement scalable and maintainable backend services using microservices and service-oriented architecture.

Requirements

Nice to have: Object-Oriented Programming (OOP)
Nice to have: SOLID principles
Nice to have: Asynchronous programming
Nice to have: Multithreading

Skills

C#.NET .NET Core ASP.NET Core Web API REST APIs GraphQL

Tech Lead .NET

Weekday AI · Posted Nov 5, 2026

Open

Bengaluru, Karnataka, India
Full-time · Manager
₹2M–₹3M per year
10+ years

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Lead the design, development, and delivery of lending modules, APIs, and microservices while managing a team of engineers.

Compensation

Salary range: Rs 2000000 - Rs 3000000 (ie INR 20 - 30 LPA)

Responsibilities

Lead the design, development, and delivery of lending modules, APIs, and microservices.
Drive low-level design, technical implementation, coding standards, and engineering best practices.
Conduct code reviews and ensure code quality, maintainability, scalability, and performance.
Optimize application performance and database queries, particularly within SQL Server environments.
Lead, mentor, and manage a team of 5–10 developers, providing technical guidance and supporting their professional growth.

Requirements

Nice to have: Lending and FinTech domain experience
Nice to have: GitHub Copilot
Nice to have: Gemini Code Assist
Nice to have: AI-assisted software development

Skills

C#.NET 6/7/8 ASP.NET Core Web API SQL Server

Microsoft Dynamics 365 CRM Developer

arianerealestate · Posted Nov 5, 2026

Open

Doha, Baladiyat ad Dawhah, Qatar
Mid
3–6 years

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Develop and customize Microsoft Dynamics 365 CRM and Dataverse solutions, build plugins, JavaScript customizations, Power Automate flows, and REST APIs, and integrate with Business Central and other platforms.

Responsibilities

Develop and customize Dynamics 365 CRM / Dataverse tables, forms, views, dashboards, business rules and business process flows
Build and maintain C# plugins, JavaScript customizations, Power Automate flows and CRM-side business logic
Implement sales workflows for leads, opportunities, bookings, units, availability and pricing
Enhance leasing contracts, renewals, transfers, amendments, cancellations and related approvals
Develop collection processes covering payment plans, installments, cheques, rescheduling and payment status

Requirements

Bachelor's degree in Computer Science, Information Technology or related discipline
Nice to have: Experience integrating CRM with Business Central
Nice to have: Experience integrating CRM with third-party portals or mobile applications

Skills

C#.NET ASP.NET Core Web API JavaScript

.NET API Developer

Cognizant · Posted Nov 5, 2026

Open

Remote, United States
Remote
Full-time · Mid
$63K–$107K per year
5–8 years

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Design, develop, and maintain scalable, secure, and high‑performing APIs and microservices for critical banking applications.

Compensation

The annual salary for this position is between $62,500 - $107,000 depending on experience and other qualifications of the successful candidate.

Responsibilities

Design, develop, and maintain RESTful APIs and microservices using C#, .NET Core, ASP.NET Core Web API, and ASP.NET MVC Core.
Own the API lifecycle, including design, development, testing, deployment, versioning, and production support.
Build scalable microservices architectures that promote resiliency, performance, security, and maintainability.
Develop and optimize database integrations, data models, and SQL queries to support business and application requirements.
Collaborate within Agile teams, participating in sprint planning, code reviews, technical design discussions, and continuous improvement initiatives.

Requirements

Bachelor's degree in Computer Science
Bachelor's degree in Engineering
Bachelor's degree in Information Technology
Nice to have: banking or financial services applications
Nice to have: cloud-native application development

Skills

C#.NET Core

Software Engineer

US Bank - TOS · Posted Nov 3, 2026

Open

Hopkins, Minnesota, United States
Hybrid
Contract · Mid
3+ years

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Software Engineer for a 5-month contract focused on UI development, modernizing pipelines from Jenkins to GitLab, and implementing observability.

Responsibilities

Upgrading Jenkins deployment pipelines to Gitlab pipelines
Updating/Modernizing obsolescent components
Patching vulnerabilities
Documenting test cases in PractiTest
Automating functional test cases wherever possible

Requirements

Nice to have: Playwright
Nice to have: Postman
Nice to have: Practitest
Nice to have: Jira

Skills

react.js Gitlab Pipelines Agile C#.NET Framework .NET Core .NET 8 ASP.NET MVC ASP.NET Core Web API

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