Sr .Net Full Stack Developer

Spire Soft; Fresno (CA); Hybrid; USD 62,000 - 103,000; Full time

Job summary

Spire Soft LLC is hiring a .NET Full Stack Software Engineer with 7+ years of experience. You will build commercial-grade software, owning the full feature lifecycle from architecture to deployment, while designing scalable backend services in .NET Core/C#.

The role includes frontend work with Angular/TypeScript and optimizing performance across SQL, Redis, and Azure-based infrastructure. Hybrid work with remote-first culture and direct collaboration with a seasoned tech veteran.

Qualifications

• 7+ years of expertise in C#, .NET Core/MVC, and building robust Web APIs.
• Frontend: Angular (TypeScript); Vue/React familiarity is a plus.
• Data: MS SQL Server data architecture and query optimization.
• Cloud/Platform: Microsoft Azure (Functions, App Services, Service Bus) and containerization with Docker/Kubernetes.
• Tooling: Python scripting and Git-based workflows.

Responsibilities

• End-to-End Ownership: manage feature lifecycle from architecture to deployment.
• Architect for scale: design backend services with .NET Core/C# for Legal-Tech and PM suites.
• Modernize & refactor: evolve codebase to high-performance architectures.
• Build seamless UIs: develop responsive frontend with Angular/TypeScript.
• Performance engineering: optimize stack (SQL, API latency, Redis) with Azure tools.
• Quality autonomy: own testing strategy (Unit, Integration, TDD).
• Technical mentorship: provide code reviews and knowledge transfer.
• DevOps integration: refine Azure CI/CD pipelines and cloud infra.

Skills

C#

.NET Core

Web APIs

Angular

TypeScript

MS SQL

Azure

Docker

Kubernetes

Git workflows

Python

Tools

Azure Functions

Service Bus

CI/CD pipelines

Redis

SQL Server tools

Job description

We are a bootstrapped, remote-first product startup. We build software that works—currently powering productivity through a SaaS suite in the Project Management and Legal-Tech sectors.

As we expand, we need builders who thrive with high autonomy. We don’t micromanage; we expect extreme ownership.

We hire unconventional thinkers who view "I don’t know" as an invitation to learn and who prefer building products over just "clearing tickets."

The Role

We are looking for a .NET Full Stack Software Engineer with 7+ years of experience to build commercial-grade, highly maintainable software. This is a high-visibility role; you will work directly with a 20+ year tech veteran, moving rapidly from concept to production.

Key Responsibilities

• End-to-End Ownership: Manage the full feature lifecycle—from architecture and schema design to deployment and optimization.
• Architect for Scale: Design performant backend services using .NET Core and C# for our Legal-Tech and Project Management suites.
• Modernize & Refactor: Lead the evolution of our codebase, transitioning legacy patterns into modern, high-performance architectures.
• Build Seamless UIs: Develop responsive, "product-first" frontend experiences using Angular and TypeScript.
• Performance Engineering: Proactively optimize the stack (SQL, API latency, Redis caching) using Azure-native tools.
• Quality Autonomy: Own your testing strategy (Unit, Integration, TDD) to ensure stability at high velocity.
• Technical Mentorship: Act as a sounding board for the team through shared learning and rigorous code reviews.
• DevOps Integration: Refine Azure CI/CD pipelines and cloud infrastructure to keep deployment frictionless.

Requirements:

Technical Requirements

• Backend Mastery: 7+ years of expertise in C#, .NET Core/MVC, and building robust Web APIs.
• Modern Frontend: Proficient in Angular (TypeScript). Familiarity with Vue.js or React is a significant plus.
• Data Architecture: High proficiency in MS SQL Server, including complex schema design and query optimization.
• Cloud & Infrastructure: Hands-on experience with Microsoft Azure (App Services, Functions, Service Bus) and containerization (Docker/Kubernetes).
• Tooling: Proficiency in Python for specialized scripting and a strong grasp of Git-based workflows.

Work Authorization

• Must be a U.S. Citizen or Permanent Resident.
• No Visa Sponsorship: Please apply only if you are authorized to work in the U.S. without current or future sponsorship.
• Direct Mentorship: Daily collaboration with a 20+ year tech veteran. No layers, just direct knowledge transfer.
• Hybrid Flexibility: We prioritize output and milestones over desk time. Work where you are most productive.
• Zero Bureaucracy: Fast execution with no approval hurdles. If you have a better way to build it, own it.
• Performance-Linked Rewards: Bonuses tied directly to product success and company milestones.
• Modern Tech Stack: Solve real-world problems using the latest tools and high-growth methodologies.
• High-Impact Environment: A startup culture where initiative is the primary currency.

Compensation

The compensation for this position is $45–$75 per hour, commensurate with expertise, experience, and technical skill set.

Preferred

Who Should Apply

• The "Founding-Mindset" Engineer: You want to build a business, not just a feature. You value learning the "how" and "why" of product strategy directly from a 20-year industry veteran.
• The Self-Starter: You thrive in ambiguity. If a process doesn't exist, you build it.
• The Lifelong Learner: You view "bootstrapped" as an opportunity to wear multiple hats—architect, developer, and product thinker.
• The Quality Obsessive: You write clean, maintainable code because you know you’ll be the one scaling it tomorrow.
• The Future Leader: You are looking for a path that leads to an Engineering Lead role as the company scales.

Who This Is NOT For

• Preference for Rigid Structure: If you need detailed, pre-written specs for every task, you won't be happy here.
• Discomfort with "Zero-to-One": This role is for those who enjoy building from scratch with minimal supervision.
• Silo Seekers: If you prefer the specialized, siloed roles of a large corporation over the broad impact and high visibility of a core product team, this isn't the right fit.