Senior .NET Engineer: Modernization & API in Azure

Tech Holding; United States; Hybrid; USD 140,000 - 190,000; Full time

Benefits offered by this job

Family health insurance cover.

Education / Certification reimbur­se­­

Multiple leave types

Flexible work schedule.

Work from home policies.

Job summary

Tech Holding seeks a hands-on Senior Software Engineer to drive application modernization, legacy code stabilization, service/API extraction, and secure integrations. The role combines C#/.NET, Angular, SQL Server with TypeScript/Node.js, gRPC, PostgreSQL, and Azure.

You will guide architecture decisions and ensure reliable, secure, and maintainable systems. Required 8+ years of experience in software development, strong hands-on skills in C#, .NET, Angular, and SQL Server, plus experience with

Qualifications

• Minimum 6 years of software development experience.
• Strong hands-on experience with C#, .NET Framework, and modern .NET.
• Experience building enterprise web apps with Angular.
• Strong SQL Server skills including stored procedures and optimization.
• Proven ability to stabilize legacy systems and extract services.
• Experience with TypeScript/Node.js and API design (REST/gRPC).
• Experience deploying on Microsoft Azure and with Git version control.
• Ability to lead architecture discussions and mentor engineers.

Responsibilities

• Design, develop, modernize, and maintain enterprise apps using C#/.NET and Angular.
• Stabilize legacy code, reduce technical debt, improve reliability and performance.
• Design and implement service/API extraction strategies to decouple monoliths.
• Build secure integrations between platforms, focusing on authentication and data protection.
• Develop and optimize SQL Server queries and data access layers.
• Lead integration development using TypeScript/Node.js and modern API architectures.
• Design service-to-service communication with gRPC and Protobuf.
• Build, deploy, and support Azure-based integrations.
• Define API contracts, integration patterns, observability and security standards.
• Mentor engineers, participate in design reviews, and support delivery planning.

Skills

C#

.NET

Angular

SQL Server

TypeScript

Node.js

gRPC

Protobuf

PostgreSQL

Azure

REST APIs

Git

Architecture reviews

Mentoring

Tools

TypeScript

Node.js

Angular

SQL Server

Azure

Protobuf

Job description

Tech Holding seeks a hands-on Senior Software Engineer to drive application modernization, legacy code stabilization, service/API extraction, and secure integrations. The role combines C#/.NET, Angular, SQL Server with TypeScript/Node.js, gRPC, PostgreSQL, and Azure.

You will guide architecture decisions and ensure reliable, secure, and maintainable systems. Required 8+ years of experience in software development, strong hands-on skills in C#, .NET, Angular, and SQL Server, plus experience with