Sign up to access all features of our service.
  • Job search
  • Favorites
  • Create a CV
    New
  • Salaries
  • Subscriptions

.NET backend developer

Connect For Purpose

Connect For Purpose (CFP) is a Muslim-led nonprofit working to build a worldwide community of Muslim talent solving global challenges through holistic, values-based solutions.

The TOES Project (The Organic Educare System ) is one of out key edu- tech initiatives to support our education transformation mission. We are now looking for an experienced .NET backend developer to help architect, build, and stabilize the server side of this platform.

Role Overview

We are seeking a .NET Backend Developer with strong experience in C# and modern .NET (preferably .NET Core/.NET 6+) to handle the backend work for the TOES project. You will design and implement APIs, manage data flow and integrations, and ensure the platform is secure, scalable, and reliable.

This role is ideal for someone who wants to use their technical skills in the path of impact and contribute to a mission-driven, values-centered project.

Key Responsibilities

  • Design, develop, and maintain backend services and RESTful APIs for the TOES platform.
  • Collaborate with the UI/UX and frontend team to connect user interfaces with backend logic.
  • Build and optimize database schemas, queries, and stored procedures (e.g., SQL Server).
  • Implement authentication, authorization, and security best practices.
  • Ensure performance, scalability, and reliability of backend components.
  • Write clean, testable, well-documented code and participate in basic code reviews.
  • Troubleshoot and debug backend issues, fix bugs, and improve existing code.
  • (Optional) Work with cloud deployment (Azure/AWS) and CI/CD pipelines if available.

Required Skills & Experience

  • Solid experience with C# and .NET / .NET Core for backend development.
  • Experience building REST APIs (ASP.NET Core Web API or similar).
  • Strong understanding of relational databases (e.g., SQL Server, PostgreSQL) and Entity Framework (or another ORM).
  • Familiarity with version control (Git) and collaborative development workflows.
  • Good understanding of API security, error handling, and logging.
  • Ability to work independently, communicate clearly, and meet agreed timelines.

Nice to Have

  • Experience with cloud platforms (Azure preferred) and deployment.
  • Experience with microservices, background jobs, or message queues.
  • Familiarity with frontend integration (e.g., React, Next.js, or similar) is a plus.
  • Previous work on nonprofit, edtech, or social impact projects.

What We Offer

  • The opportunity to contribute your skills to a mission-driven, Islamic values–aligned project.
  • Experience building a real product used by parents, students, and/or schools.
  • Collaboration with a small, passionate, multi-disciplinary team.
  • A reference or recommendation letter upon successful completion of your commitment.
  • (If applicable) Flexible hours and remote-friendly collaboration.

How to Apply

Please email us at View email address on click.appcast.io with:

  • A short introduction (who you are and why you’re interested in TOES/CFP).
  • Your CV or LinkedIn/GitHub profile.
  • 1–2 examples of .NET backend projects you’ve worked on (links, repos, or description).
  • Your approximate availability (hours/week and start date).
Vacancy posted 4 days ago
Similar jobs that could be interesting for youBased on the .NET backend developer in San Jose, CA vacancy
  •  ...Title - Net Backend Developer Client name: Retail domain Remote Visa - USC (H4, GC, GC-EAD- Non edited only) Don't share edited or fake visa copy. .NET, SQL Server Retail experience - major plus Preferred skills: IIS, Dynatrace Migrating away from... 
    Suggested
    Remote work

    Kasmo Global

    Cupertino, CA
    5 days ago
  •  ...is must] • 5+ yrs professional experience, predominantly designing and implementing Node.js & NestJS & Go RESTful services • Developed, deployed, and supported cloud-based NestJS and GO services and supporting software • 5+ years of Experience with NestJS & GO. Experience... 
    Suggested

    Sparktek

    San Jose, CA
    2 days ago
  • We are seeking a highly skilled engineer to join the cloud and data center infrastructure team with at least 5 years of systems development, deployment, and related operations experience. The candidate must have experience with distributed systems, open source development...
    Suggested

    Samsung

    San Jose, CA
    1 day ago
  • $100k - $150k

     ...Lead Backend Developer - Remote Bright Vision Technologies is a technology consulting and software development company delivering cloud, AI, data, and enterprise solutions across the United States. This is a fantastic opportunity to join an established and well... 
    Suggested
    Full time
    H1b
    Local area
    Immediate start
    Remote work
    Visa sponsorship

    Bright Vision Technologies

    San Jose, CA
    15 hours ago
  •  ...Job Title:.Net Developer Locations: Pittsburgh, PA & Milpitas, CA (Onsite) Duration: Full time Only We are specifically looking for a developer with the following skillset. Please share profiles matching this requirement. Skills Required: Total IT 8 Years... 
    Suggested
    Full time

    Syntricate Technologies

    Milpitas, CA
    3 days ago
  •  ...proven technical lead and architect experience ~ Proficiency in Entity Framework and code first design. ~ Proficient in ASP.NET as well as ASP.NET MVC web frameworks ~ Experienced with C#, Javascript, JQuery, AJAX, HTML, and CSS ~ Development experience... 

    3B Staffing LLC

    San Jose, CA
    1 day ago
  •  ...Senior Lead.NET Developer (Web/Windows) Location: San Jose, California (ONSITE) Job Type: 6 Months Skills Needed: XSLT, XSD, Azure environment, Microsoft.NET framework development, Application Programming Interface (API) development, Microsoft SQL Server Stored... 

    Argyle Infotech

    San Jose, CA
    1 day ago
  •  ..., build, and maintain efficient, reusable, and reliable C#, VB.NET, and T-SQL code Ensure the best possible performance, quality,...  ...Familiarity with NoSQL solutions such as mongoDB and Redis Experience in developing and maintaining online e-commerce systems that are both... 

    Jobsbridge

    Milpitas, CA
    1 day ago
  •  ...Job Title .Net Full Stack Architect (Hands On) Job Description HCL's Professional Services team works across every technology and system to deliver solutions to customers in every industry. As a.NET Full Stack Architect on our Services team, you will have the... 

    Omega Solutions

    Santa Clara, CA
    1 day ago
  •  ...Position Title: Senior Lead .NET Developer Location: San Jose, IL Objective: This Resource deliverables will design, create, and test all interfaces and data exchanges required for two projects: Inmate Records Information System (IRIS) and Integrated Justice... 
    Work at office

    TriOptus LLC

    San Jose, CA
    14 hours ago
  •  ...Join the client News team and help us create a great user experience around news that delights millions of customers every day. As a backend engineer, you will be helping the team to build micro‑services and improve the content ingestion pipeline. Description We are... 

    Winmax Systems

    Cupertino, CA
    1 day ago
  • $170k - $200k

     ...model it reasons over, so we`re building both. Your code ships to paying customers, not a demo. You You`ll be hands-on with building backend systems that real customers depend on and contribute to a product from day one. Have built and operated backend systems that real... 

    SproutsAI

    San Jose, CA
    1 day ago
  • $51 - $56 per hour

     ...Experience with Java and/or Python. Knowledge of REST APIs and backend development. Familiarity with SQL databases such as MySQL or...  ...Strong problem-solving skills. Responsibilities: Develop and maintain backend services and APIs. Write clean, efficient... 

    Cynet Systems

    Sunnyvale, CA
    5 days ago
  • $237.8k

     ...About the Role Now we are looking for a Middle/Senior C# Developer to join the team that works on Veeam Backup for Office 365....  ...bit of C++, C++CLI), REST, PowerShell, WPF   ~ Latest .NET frameworks  ~ Visual Studio or Rider  ~ Azure DevOps... 
    Base plus commission
    Work at office
    Local area
    Remote work
    Worldwide
    Flexible hours

    Veeam Software

    San Jose, CA
    4 days ago
  •  ...Persimmons Ai Compiler Developer Persimmons is building the infrastructure that will power the next decade of AI. Founded in 2023 by...  ...based large language models by applying sophisticated mid- and backend compiler techniques to target Persimmons.ai's custom accelerator... 

    Persimmons, Inc.

    San Jose, CA
    14 hours ago
  •  ...at the bleeding edge of AI. About the Role We’re looking for a Backend Engineer (Mid‑Level) who thrives in a fast‑paced, high‑ownership...  ...‑moving team. Key Responsibilities Core Development Design, develop, and maintain RESTful APIs and backend services using Python (FastAPI... 

    Tessera Labs

    San Jose, CA
    1 day ago
  • $100k - $150k

     ...Join to apply for the Backend Engineer role at Peppr AI (YC W25) This range is provided by Peppr AI (YC W25). Your actual pay will be based on your skills and experience — talk with your recruiter to learn more. Base pay range $100,000.00/yr - $149,998.00/yr What You’ll... 
    Full time

    Peppr AI (YC W25)

    Cupertino, CA
    1 day ago
  • $180k - $225k

     ...for you ! Role Overview FlexAI is looking for a Senior Backend Engineer (Infrastructure & AI Platform) with deep Golang...  ...Core Platform & Infrastructure Backend: Architect and develop high-performance Golang services for FlexAI's AI PaaS and infrastructure... 
    Work at office

    FlexAI

    San Jose, CA
    4 days ago
  •  ...Role: Backend developer Location: Sunnyvale, CA Duration: Long Term Contract • Experience building n-tier, highly scalable, fault-tolerant, and reactive microservices using: # Java, Scala, and Go # Apache Camel, Spring Framework #... 
    Long term contract

    AceStack LLC

    Sunnyvale, CA
    15 hours ago
  • $170k - $400k

     ...naturally with people and the real world. To get there, we’re developing multimodal models and next-generation AI hardware together - designed...  ...era of intelligent systems. About the Role You’ll build the backend systems that make Hark’s AI agent actually work — reliable,... 
    Full time

    Hark

    San Jose, CA
    1 day ago
  • $122.57k - $316.8k

     ...Responsibilities Confidential Client’s Creation Platform team builds the backend platform that powers content creation workflows at scale. As a Backend Software Engineer on this team you will design, build, and evolve large-scale distributed backend services that support... 
    Full time
    Local area

    Edkey, Inc.

    San Jose, CA
    1 day ago
  •  ...Full Stack Developer Duration: 6+ months Location: Santa Clara, CA 100% Onsite Type...  ..., and version control workflows. C++, C#.NET Core, MS-SQL Proficient in designing and...  ...of modern UI/UX principles. Backend Troubleshooting & System Integrations... 
    Contract work

    Diverse Lynx

    Santa Clara, CA
    3 days ago
  • $70.3k

     ...WordPress Developer Our client, a leading organization in the technology sector, is seeking a WordPress Developer to join their dynamic team. As a Web Developer, you will be an integral part of the Digital Solutions Department. Annual Salary: $70,304.00 — Full‑time Business... 
    Hourly pay
    Full time
    Temporary work
    Local area

    Indotronix International Corporation

    Sunnyvale, CA
    2 days ago
  • $155k - $225k

     ...Staff Back-End Developer Location: Milpitas, CA (hybrid) At Arlo, we're passionate about creating innovative and reliable solutions...  ...in designing, developing, and optimizing secure, scalable backend systems. This role will have a direct impact on product performance... 

    Arlo Inc

    Milpitas, CA
    1 day ago
  •  ...Lambda, Postgres, NoSQL, Kafka, and much more. Our company is still young so this role will get a chance to work across the entire backend and help bring our product to market. This is a high-impact/high ownership role and is expected to grow as our company does. What you... 
    Remote work

    Monetize Now

    San Jose, CA
    1 day ago
  • We are seeking a Senior Backend Developer with strong expertise in Java, Spring Boot, and microservices architecture. The ideal candidate will have hands-on experience with cloud platforms, event-driven systems, and containerization technologies. This role involves designing... 
    Work experience placement

    Compunnel

    Sunnyvale, CA
    4 days ago
  •  ...Description Our Direct Client in San Jose is looking for Full Stack Developer with Node.js backend and React.js front end. Requirement: Full Stack Developer...  ...please share your resume and send it to srele at etouch.net Snehal Rele| Sr Recruiter| Software Engineering eTouch... 

    eTouch Systems

    San Jose, CA
    3 days ago
  •  ...Python Backend Engineer Location: San Jose (CA), Onsite @ San Jose, CA is mandatory Role Overview: We are looking for a Python Backend Engineer to build the backbone of our platform. You will be responsible for creating high-performance APIs, integrating advanced... 

    E-Solutions

    San Jose, CA
    3 days ago
  •  ...Role: PHP Fullstack Reactjs Developer (Java backend + Reactjs Frontend) Location: Santa Clara, CA, 95054xPrinceton, NJ, 08543xMorrisville, PA, 19067xMorrisville, NC, 27560xDublin, NC, 28332xWoodbridge, NJ, 07095xBellevue, WA, 98009xCharlotte, NC, 2827... 

    Zortech Solutions

    Santa Clara, CA
    4 days ago
  • $145k - $180k

     ...celebrates all of our team members. What You’ll Do Architect, develop, and scale the core services and infrastructure that power our...  ...delivered reliably and at scale. Design and maintain scalable backend systems, APIs, and data pipelines to support applications powered... 
    Local area

    Archer

    San Jose, CA
    1 day ago

Do you want to receive more vacancies?

Subscribe and receive similar vacancies to .NET backend developer. Be the first to apply!