Top C# Development Companies in California
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List of the Best C# Development Agencies and C# Developers in California
Certain agencies may be featured through sponsored placements. Rankings and SF Scores remain unbiased and are based solely on our evaluation methodology.
68 Companies
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California
5.0 (1 Reviews)
24
SF Score
SF Score is calculated using our SARM methodology to evaluate agency expertise, market presence, and overall credibility. View Ranking Methodology
24
SF Score
SF Score is calculated using our SARM methodology to evaluate agency expertise, market presence, and overall credibility. View Ranking Methodology
Leverage technology for your growth
Since more than ten years ago, Aspire Software Consultancy has specialised in offering services to its clients globally for all types of bespoke software development and maintenance. The company is a software outsourcing and offshore software development company.
View Aspire Software Consultancy Profile
$25-$49/hr
$1,000+
50 - 249
San Francisco, USA
Verified Client Review
Logistics Software Upgrade for Medical Device Firm
Reviewed by: Mans Johansson, CMO at Dentnet View all 1 Reviews
5.0 (1 Reviews)
20
SF Score
SF Score is calculated using our SARM methodology to evaluate agency expertise, market presence, and overall credibility. View Ranking Methodology
20
SF Score
SF Score is calculated using our SARM methodology to evaluate agency expertise, market presence, and overall credibility. View Ranking Methodology
Delivering Innovative Solutions
Xavor Corporation is a multinational technology and management consulting company that was founded in 1995 with the goal of providing cutting-edge tech solutions to both startups and Fortune 500 companies. Although we have experience with web and mobile app development, Oracle Agile PLM, and Microsoft 365 technologies, we are now focused on utilizing AI and robotics to transform the healthcare sector. Based in Irvine, Shanghai, and Lahore - 44+ R&D Labs - 500+ Clients Served - 200+ Engineers and Experts - 1500+ Successful Projects - 88+ PhD Researchers & Thought Leaders - Microsoft Gold Partner - AWS Partner - Salesforce Consulting Parter
View Xavor Corporation Profile
$25-$49/hr
$10,000+
50 - 249
Irvine, USA
Verified Client Review
Agile-PLM Tool Dev for Cardiac Monitoring Solutions Company
Reviewed by: Dan Tylutki, COO at Cardiac Insight, Inc View all 1 Reviews
4.8 (1 Reviews)
20
SF Score
SF Score is calculated using our SARM methodology to evaluate agency expertise, market presence, and overall credibility. View Ranking Methodology
20
SF Score
SF Score is calculated using our SARM methodology to evaluate agency expertise, market presence, and overall credibility. View Ranking Methodology
Transforming Businesses with Innovative IT and Digital Solutions
Nextwebi, a technology-driven digital transformation company delivering intelligent, AI-powered solutions to businesses of all sizes. We partner with startups, SMEs, and enterprises to help them adopt modern technologies that improve efficiency, enhance customer experiences, and unlock new growth opportunities. Our service portfolio is comprehensive and designed to support end-to-end digital transformation, including: AI Development and Consulting Solutions Web Application Development Services SharePoint Development Services Mobile App Development Services E-commerce Development Services Software Development Services Enterprise Application Development Services Website Design and Development Services Resource Outsourcing Services Cyber Security Services Digital Marketing Services CRM and ERP Development Services Cloud and Hosting Infra Support Services Nextwebi has collaborated with clients across diverse industry domains such as healthcare, retail, manufacturing, e-commerce, fintech, education, real estate, and media. Our experience across industries, combined with a strong focus on innovation and quality, enables us to deliver scalable and reliable digital solutions aligned with business goals. We follow a structured and agile development approach that emphasizes collaboration, transparency, and timely execution. Our solutions are built with a strong focus on performance, security, and scalability, ensuring long-term value and measurable business impact. With Nextwebi, businesses gain a trusted technology partner committed to driving digital transformation through AI and innovation.
View Nextwebi It Solutions Pvt Ltd Profile
Undisclosed/hr
$1,000+
50 - 249
San Francisco, USA
Verified Client Review
Digital Marketing, PPC, and SEO Services for Web Development Firm
Reviewed by: Jeyaprabhakaran Peter, Data Analyst at Web Development Company View all 1 Reviews
0.0 (0 Reviews)
0.0 (0 Reviews)
18
SF Score
SF Score is calculated using our SARM methodology to evaluate agency expertise, market presence, and overall credibility. View Ranking Methodology
18
SF Score
SF Score is calculated using our SARM methodology to evaluate agency expertise, market presence, and overall credibility. View Ranking Methodology
A technology vision with a human touch
Sibedge: Your Premier Partner in Global Software Engineering Solutions Sibedge is a leading software engineering firm specializing in digital transformation and innovative software solutions. With over 15 years of experience, we've successfully completed more than 350 projects across 27+ countries, making us a trusted partner for businesses worldwide. Our headquarters in Australia, combined with a network of skilled engineers globally, positions us to deliver high-impact services tailored to your unique needs. Our service framework is built around agile methodologies, ensuring flexibility and speed in project delivery. We offer five key services that prioritize collaboration and excellence: - Team Extension: Quickly augment your workforce with our remote teams of 3-5 engineers, ready to seamlessly integrate into your existing operations. - Agile Software Development: Experience effective project management that minimizes risks and maximizes business value through our agile approach. - Squads Product Development: Leverage our multidisciplinary squads, including UX designers and quality engineers, for comprehensive product development that drives continuous improvement. At Sibedge, we believe in strong partnerships. Our process includes understanding your needs, building dedicated teams, and managing smooth transitions to ensure your success. Choose Sibedge for your software development needs and watch your business thrive.
View Sibedge Profile
$25-$49/hr
$10,000+
50 - 249
Cupertino, USA
0.0 (0 Reviews)
18
SF Score
SF Score is calculated using our SARM methodology to evaluate agency expertise, market presence, and overall credibility. View Ranking Methodology
18
SF Score
SF Score is calculated using our SARM methodology to evaluate agency expertise, market presence, and overall credibility. View Ranking Methodology
IT Solutions That Match Your Needs!
We serve two distinct regions: the United States and the Gulf Cooperation Council. NCIT Solutions' goal is to offer affordable, practical outsourcing solutions. We provide you with offshore services that are customized to meet your unique needs. Our affordable IT solutions give you a competitive advantage and produce noticeable outcomes. We can handle all of your IT demands because we work with a wide variety of systems, including Linux, UNIX, Solaris, Windows, iOS, and Android. Our software team's primary skills include software design and graphic design.
View NCIT Solutions Profile
N/A
$1,000+
10 - 49
McCook, USA
0.0 (0 Reviews)
18
SF Score
SF Score is calculated using our SARM methodology to evaluate agency expertise, market presence, and overall credibility. View Ranking Methodology
18
SF Score
SF Score is calculated using our SARM methodology to evaluate agency expertise, market presence, and overall credibility. View Ranking Methodology
Powering smarter eCommerce through innovation and expertise.
Founded in 2001, Smith Consulting is a trusted leader in DNN, Orchard, and WordPress eCommerce development and ERP integration solutions. With over 25 years of combined experience in software engineering and payment processing, we deliver secure, scalable, and customized platforms that optimize online sales, streamline transactions, and drive business growth worldwide.
View Smith Consulting Profile
$100-$149/hr
$10,000+
10 - 49
Laguna Niguel, USA
0.0 (0 Reviews)
0.0 (0 Reviews)
18
SF Score
SF Score is calculated using our SARM methodology to evaluate agency expertise, market presence, and overall credibility. View Ranking Methodology
18
SF Score
SF Score is calculated using our SARM methodology to evaluate agency expertise, market presence, and overall credibility. View Ranking Methodology
Enterprise Software Solutions for Smarter Operations
At BNMA, we don't just create software; we revolutionize the operational landscape for organizations, enabling them to achieve more with less effort. As a premier provider of bespoke software solutions tailored for enterprise clients, we specialize in digital transformation and process optimization. Our approach blends strategic consulting with innovative development, addressing the operational challenges that hinder your organization’s potential. We partner with a wide array of clients, from Fortune 500 companies to burgeoning SMEs, empowering them to enhance efficiency, minimize waste, and simplify intricate workflows. Why Partner with BNMA? - Tailored Solutions for Your Needs: Our systems are designed around your team's workflows, enhancing productivity without forcing you to adapt to a rigid framework. - Measurable Business Impact: Every project focuses on delivering tangible operational and financial outcomes, whether it's expediting quoting processes or improving visibility and reducing rework. - Expert Leadership: Our team, led by a former military CTO with over 30 years of tactical experience, has a proven track record of delivering scalable solutions across various sectors. - Exceptional Code Quality: We guarantee that every line of code we produce is clean, maintainable, and scalable, designed for sustainable growth. Our Core Offerings Include: - Custom Software Development - Web & Mobile Application Development - UI/UX Design - Software & ERP Integrations - Business Process Automation - Code Audits & Technical Consulting - AI-Enhanced Tools & Workflows At BNMA, we are dedicated to supporting operational leaders in streamlining their systems with precision and integrity, all with an unwavering focus on achieving remarkable results.
View BNMA Profile
$50-$99/hr
$75,000+
2 - 9
Carlsbad, USA
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0.0 (0 Reviews)
17
SF Score
SF Score is calculated using our SARM methodology to evaluate agency expertise, market presence, and overall credibility. View Ranking Methodology
17
SF Score
SF Score is calculated using our SARM methodology to evaluate agency expertise, market presence, and overall credibility. View Ranking Methodology
Elevating Technology with Excellence
Enhancing Technology through Superiority For the past ten years, NanoByte Technologies, a US-based IT firm, has been offering cutting-edge software design and development services, worldwide IT solutions, and outstanding websites, mobile apps, and web applications. Prioritizing time, quality, and money, we strive for 100% client satisfaction with a perfect success rate. For unrivaled service that constantly goes above and above, choose us.
View NanoByte Technologies Profile
$25-$49/hr
$10,000+
10 - 49
Sacramento, USA
0.0 (0 Reviews)
17
SF Score
SF Score is calculated using our SARM methodology to evaluate agency expertise, market presence, and overall credibility. View Ranking Methodology
17
SF Score
SF Score is calculated using our SARM methodology to evaluate agency expertise, market presence, and overall credibility. View Ranking Methodology
Full-Stack Software Development with Global Expertise
Softbinator is a full-stack software development company with headquarters in Silicon Valley and Bucharest, delivering world-class digital products to clients across the US and Europe. With 80% of our clients based in the United States, we build dedicated, product-focused development teams that combine technical expertise with a results-driven mindset to turn ideas into scalable, high-value software solutions. We offer end-to-end product development services, including design, coding, deployment, and marketing. Our core services include team augmentation for flexible, skilled support, custom software development tailored to business needs, AI/ML integration for automation and predictive solutions, UI/UX product design for user-centered experiences, and product marketing to maximize go-to-market success. Softbinator stands out for its agile culture, client-centric approach, and English-proficient teams that work seamlessly across multiple time zones. We deliver Silicon Valley-quality engineering at 50% lower cost, offering flexibility, proactive communication, and dedicated support to ensure your project meets its goals. Whether you’re a startup or an enterprise, Softbinator empowers businesses to scale faster, innovate confidently, and bring digital products to life with efficiency, reliability, and measurable impact.
View Softbinator Technologies Profile
$50-$99/hr
$100,000+
50 - 249
San Mateo, USA
0.0 (0 Reviews)
0.0 (0 Reviews)
17
SF Score
SF Score is calculated using our SARM methodology to evaluate agency expertise, market presence, and overall credibility. View Ranking Methodology
17
SF Score
SF Score is calculated using our SARM methodology to evaluate agency expertise, market presence, and overall credibility. View Ranking Methodology
Setting the Standard for Staff Augmentation and IT Solutions
Cyber InfraStructure INC. (CIS), founded in 2003, is a global IT consulting and staff augmentation leader with offices in Central India, the USA, and the UK. We specialize in delivering top-tier technology solutions, helping businesses scale their teams and optimize operations efficiently. With experience serving over 2,100 clients across 100+ countries, we support industries including education, finance, travel, retail, manufacturing, gaming, and healthcare. CIS is recognized for excellence, holding CMMI Level 3, ISO 9001:2018 certifications, and partnerships such as Microsoft Gold Partner, Magento Silver Solution Partner, and memberships with Drupal and Joomla. Our focus is delivering innovative, reliable IT solutions that drive measurable business results.
View CIS Profile
< $25/hr
$10,000+
250 - 999
San Jose, USA
0.0 (0 Reviews)
12
SF Score
SF Score is calculated using our SARM methodology to evaluate agency expertise, market presence, and overall credibility. View Ranking Methodology
12
SF Score
SF Score is calculated using our SARM methodology to evaluate agency expertise, market presence, and overall credibility. View Ranking Methodology
Custom Web, Mobile & Software Development That Drives Growth.
Delight IT Solutions is a global IT services company dedicated to helping businesses accelerate their digital transformation through innovative, reliable, and scalable technology solutions. We specialize in custom website development, mobile application development, eCommerce solutions, enterprise software, UI/UX design, cloud integration, and digital marketing services tailored to businesses of all sizes. With a team of experienced developers, designers, and digital strategists, we deliver high-quality solutions that combine creativity, performance, and security. Whether you're a startup looking to launch your first product or an established enterprise seeking to modernize your digital presence, we provide end-to-end services that turn ideas into successful digital experiences. Our expertise includes WordPress development, PHP, Laravel, React.js, Node.js, Android and iOS app development, API integrations, CRM solutions, website maintenance, SEO, PPC advertising, social media marketing, and branding. Every project is built with a strong focus on user experience, search engine optimization, responsive design, and long-term scalability. At Delight IT Solutions, we believe technology should empower businesses to grow faster, improve efficiency, and stay ahead of the competition. Our client-first approach, transparent communication, and commitment to excellence have earned us the trust of clients across multiple industries worldwide. From strategy and design to development, deployment, and ongoing support, we work as your technology partner to deliver measurable business results. Whether you need a corporate website, custom web application, mobile app, online store, or a complete digital marketing strategy, Delight IT Solutions is committed to providing cost-effective, future-ready solutions that drive innovation and business success. Let's build the future of your business—one digital solution at a time.
View Delight IT Solutions Profile
$25-$49/hr
$100 - $10,000,000
50 - 249
San Francisco, USA
0.0 (0 Reviews)
3
SF Score
SF Score is calculated using our SARM methodology to evaluate agency expertise, market presence, and overall credibility. View Ranking Methodology
3
SF Score
SF Score is calculated using our SARM methodology to evaluate agency expertise, market presence, and overall credibility. View Ranking Methodology
Virtual and Augmented Reality development
BVG Software Group is a global software development partner delivering tailored technology solutions for startups, SMBs, and large enterprises. Our team of skilled engineers and project managers helps businesses achieve measurable results through on-time, on-budget execution and strategic guidance. We prioritize business analysis and evaluation, investing the time to understand your goals and provide actionable insights before any development begins. Leveraging Ukraine’s top-tier STEM talent and cost-effective outsourcing advantages, we deliver exceptional value without compromising quality. Our expertise spans: 3D Art Production & Immersive Content Development Mobile Game Development Native iOS & Android Apps Cross-Platform Apps (Unity, React Native) Custom Web Development (PHP, Node.js, JavaScript) BVG SG combines deep technical knowledge, agile workflows, and transparent project management to provide scalable, innovative, and reliable digital solutions. Whether you need additional engineering resources or end-to-end product development, we help turn your business vision into high-impact technology.
View BVG Software Group Profile
$25-$49/hr
$10,000+
50 - 249
South San Francisco, USA
0.0 (0 Reviews)
2
SF Score
SF Score is calculated using our SARM methodology to evaluate agency expertise, market presence, and overall credibility. View Ranking Methodology
2
SF Score
SF Score is calculated using our SARM methodology to evaluate agency expertise, market presence, and overall credibility. View Ranking Methodology
Form Follows Function
IMRepublic, founded in 2005 with offices in San Francisco, CA, and Belgrade, Serbia, is a full-stack software development and design agency delivering tailored digital solutions for businesses of all sizes. We specialize in custom software development, enterprise systems, and process optimization to help clients achieve measurable growth. Our client-focused approach combines assessment, design, development, and optimization. We collaborate closely with your team to align technology solutions with business goals, leveraging the latest globally-adopted frameworks and languages while respecting your existing infrastructure. From backend, frontend, and middleware development to complex enterprise integrations, our experienced team advises on the most efficient technology stack to maximize ROI. Whether you need custom software to solve unique business challenges or enhancements to existing systems, IMRepublic provides agile, reliable, and scalable solutions that drive results and streamline operations. We are committed to client success, delivering innovative, high-quality software that boosts performance and revenue.
View IM Republic, Inc Profile
$50-$99/hr
$5,000+
10 - 49
San Francisco, USA
0.0 (0 Reviews)
1
SF Score
SF Score is calculated using our SARM methodology to evaluate agency expertise, market presence, and overall credibility. View Ranking Methodology
1
SF Score
SF Score is calculated using our SARM methodology to evaluate agency expertise, market presence, and overall credibility. View Ranking Methodology
We are changing the world with technologies
MedRec Technologies is a London-based software development company delivering advanced digital solutions to businesses worldwide. With a global team of 60+ software engineers, consultants, designers, and technology specialists across the UK, USA, Europe, the Middle East, and Asia, we provide scalable and high-performance software tailored to modern business needs. Our expertise includes AI and Machine Learning, Big Data Analytics, IoT, Cloud Computing, Blockchain, RPA, Cybersecurity, and SDN-NFV, enabling organizations to accelerate digital transformation. We serve diverse industries such as healthcare, fintech, retail, manufacturing, education, robotics, e-commerce, and transportation. Our core services include custom software development, mobile and web application development, enterprise solutions, automation systems, chatbot development, real-time applications, QA testing, and IT consulting. With a strong focus on innovation, quality, and collaboration, MedRec Technologies helps businesses build reliable, secure, and future-ready technology solutions.
View MedRec Technologies Profile
< $25/hr
$10,000+
50 - 249
San Francisco, USA
0.0 (0 Reviews)
1
SF Score
SF Score is calculated using our SARM methodology to evaluate agency expertise, market presence, and overall credibility. View Ranking Methodology
1
SF Score
SF Score is calculated using our SARM methodology to evaluate agency expertise, market presence, and overall credibility. View Ranking Methodology
Let's build awesome
SDI is a global software development company delivering innovative digital solutions to businesses for over 20 years. We specialize in custom software development, mobile app development, web design and development, and digital marketing services, helping organizations transform ideas into scalable digital products. Our team of 200+ certified professionals and 30+ UI/UX experts collaborates closely with clients to create tailored solutions that align with their business goals. With offices in California, Melbourne, and multiple locations in India, SDI has served 5,000+ clients worldwide and successfully delivered 2,000+ applications across industries including finance, education, healthcare, enterprise, social networking, and startups. Trusted by brands such as Pepsi, Stanford University, and Marvell, we focus on building high-performance applications, responsive websites, and growth-driven digital strategies that help businesses innovate, scale, and compete in today’s digital landscape.
View SDI - Software Developers Inc Profile
< $25/hr
$1,000+
50 - 249
Saratoga, USA
0.0 (0 Reviews)
0.0 (0 Reviews)
1
SF Score
SF Score is calculated using our SARM methodology to evaluate agency expertise, market presence, and overall credibility. View Ranking Methodology
1
SF Score
SF Score is calculated using our SARM methodology to evaluate agency expertise, market presence, and overall credibility. View Ranking Methodology
Let's build something great together.
Plus8Soft is a global software development company helping startups and enterprises build, scale, and modernize digital products using cutting-edge technologies and flexible engagement models. Our distributed team of engineers, product experts, and project managers delivers high-quality, cost-effective solutions across industries. We go beyond coding—acting as a true technology partner by aligning with your goals, integrating with your workflows, and providing strategic insights that accelerate product success. From MVP development and team augmentation to legacy system modernization, we deliver scalable, future-ready solutions. With a strong focus on Agile development, transparency, and continuous improvement, Plus8Soft ensures predictable delivery and measurable outcomes—empowering businesses to innovate faster and grow with confidence.
View Plus8soft Profile
$25-$49/hr
$5,000+
50 - 249
Palo Alto, USA
0.0 (0 Reviews)
1
SF Score
SF Score is calculated using our SARM methodology to evaluate agency expertise, market presence, and overall credibility. View Ranking Methodology
1
SF Score
SF Score is calculated using our SARM methodology to evaluate agency expertise, market presence, and overall credibility. View Ranking Methodology
Web design and staff augmentation solutions for growing businesses
Cidersoft is a technology services company offering web design, web development, and IT staff augmentation to businesses seeking flexible, cost-effective digital solutions. The agency provides both project-based web design and development work and on-demand staffing to augment client technology teams with skilled developers, designers, and project managers. Cidersoft serves a broad range of industries, helping businesses modernize their digital presence and scale their technical capacity without the overhead of full-time hires. With a blend of creative and technical talent, Cidersoft delivers solutions that are practical, scalable, and aligned with each client's specific operational and growth needs.
View Cidersoft - Web Design & Staff Augmentation Profile
$50-$99/hr
$10,000+
50 - 249
San Ramon, USA
0.0 (0 Reviews)
1
SF Score
SF Score is calculated using our SARM methodology to evaluate agency expertise, market presence, and overall credibility. View Ranking Methodology
1
SF Score
SF Score is calculated using our SARM methodology to evaluate agency expertise, market presence, and overall credibility. View Ranking Methodology
Delivering innovative IT solutions to fuel your digital transformation
Baymediasoft Technologies is a full-service IT and digital solutions company providing custom software development, mobile app development, web development, and UI/UX design services. The company serves clients across the US, UK, and global markets, helping businesses of all sizes accelerate their digital transformation journeys. Baymediasoft offers end-to-end development services from ideation and design to deployment and post-launch support, with expertise in technologies including React, Node.js, Flutter, iOS, Android, and cloud platforms. The firm is known for its competitive pricing, agile development methodology, and strong project management practices that ensure timely delivery of quality digital products.
View Baymediasoft Technologies Profile
$25-$49/hr
$1,000+
50 - 249
Van Nuys, USA
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