All .NET Development Companies in California
Apptech Systems
5(6 reviews)Your Enterprise’s Next Chapter Starts Here!
Top awardedFounded in 2017, Apptech has emerged as a reliable ally for organizations on their journey towards digital transformation. We specialize in crafting a suite of digital solutions that strategically leverage the transformative power of technology. Our core expertise encompasses bespoke software, innovative web and mobile applications, and robust enterprise solutions that guide our clients toward a prosperous digital future. We are proud partners with industry giants Microsoft and Amazon, utilizing their cutting-edge technologies to deliver exceptional results. Moreover, our operations extend from our headquarters in Türkiye to the United States and Saudi Arabia. Each office is equipped to serve regional clients with tailored expertise, making us a global player in the digital solutions arena. End-to-End Software Development Web & Mobile App Development AI & Machine Learning SaaS Development PoC/MVP Development App Modernization IT Consulting Quality Assurance Services Our mission is to help enterprises accelerate the adoption of new technologies, untangle complex issues that always emerge during digital evolution, and orchestrate ongoing innovation. Whether it is a consumer-oriented app or a transformative enterprise-class solution, the company leads the process from ideation and concept to delivery and provides ongoing support through its quality framework.Looking for work in .NET DevelopmentLocated in Lodi, United States (+3)From €5,000 for .NET DevelopmentWorked in Household Products (+12)Speaks English, Arabic11-50 membersDifferenz System
5(9 reviews)We make a difference.
At Differenz System we focus on providing a variety of web and app development solutions that have positively impacted our client's productivity and profitability. Our company is built on the foundation of three points: high performance, high productivity, and a healthy and energizing work environment. Our team is composed of experienced professionals who specialize in providing comprehensive business solutions for web development, mobile app development, custom application development, and software development, all with a service-oriented mindset. Throughout the years we have prioritized providing innovative solutions to our customers with care and diligence. Today, it is safe to say we are one of the best custom application and web development companies out there!Looking for work in .NET DevelopmentLocated in Los Angeles, United StatesFrom €1,000 for .NET DevelopmentWorked in Industrial Goods & Services (+2)Speaks English, Hindi51-200 membersPlavno
5(16 reviews)AI-First Software Company: Secure Agents, Voice Assistants, and Scalable Cloud.
Top awardedPlavno is a premier software development house with over 20 years of experience and a highly qualified team of experts in your industry. Fully-fledged teams of specialists cover each stage of product creation , from product management and analysis to design, development, testing, and ongoing support. We have a unique advantage , our pre-formed full teams work exclusively on products in their specific domains, such as Healthcare, E-Learning, FinTech, Travel & Hospitality, Fleet management and more. We can help you with: ✔ Web Development ✔ Mobile App Development ✔ CRM/CMS/SaaS Development ✔ Chat and Chatbot Development ✔ Web3 / DeFi / DAO / Smart contract ✔ WebRTC Stop struggling with bloated budgets and slow time-to-market. At Plavno, our fully-fledged team provides cost-effective and streamlined solutions that minimize technical debt and maximize your product's potential. With end-to-end support and a proven track record in the SAFe Scaled Agile Framework, we're the partner you need to succeed. LET’S CONNECT Let us help you choose the best path forward to deliver the perfect solution: Admin@plavno.io3 works in .NET DevelopmentLocated in Alexandria, United States (+2)From €10,000 for .NET DevelopmentWorked in Banking & Financials (+19)Speaks English, French(+2)51-200 membersRSunBeat Software
5(10 reviews)Crafting Software Solutions for a Digital World
RSunBeat Software: Your Partner for Custom App & Web Development RSunBeat Software is a premier software development company specializing in custom mobile app development and web application development. We are a trusted IT solutions partner for businesses across the USA, Germany, UK, Sweden, Ireland, and Dubai, delivering innovative, scalable digital products that drive growth. Building for the Future, Today Our team of experts excels in iOS app development, Android app development, and cross-platform mobile development using modern frameworks like Flutter and React Native. We don't just build apps; we create robust enterprise software solutions and custom software that solve complex business challenges. Our key services are aligned with the top demands of the global market: Custom Software Development Mobile App Development Services (iOS, Android, Cross-Platform) Full-Stack Web Development eCommerce Website Development Game Development (AR, VR, NFT, 2D, 3D) Enterprise Mobility Solutions Cloud Computing & IoT Integration We are recognized as a top offshore software development company, offering a strategic blend of global expertise and cost-effective solutions. With over 8 years of industry leadership, we are committed to helping you launch and scale your vision. Our Global Presence With a strong presence in the USA and development centers in India, we are perfectly positioned to serve clients in North America, Europe, and the Middle East. Ready to start your next project? We are actively seeking strategic partnerships. Hire our expert team and let's bring your digital vision to life.Looking for work in .NET DevelopmentLocated in Pala, United StatesFrom €1,000 for .NET DevelopmentWorked in Automotive (+10)Speaks English, Hindi11-50 membersIdea Usher
4.2(7 reviews)Ushering in Innovation
Highly recommendedIdea Usher is a premier tech solution provider, offering a full spectrum of next-generation digital solutions to startups, Fortune 500 companies, and enterprises worldwide. With offices across the USA, UK, Canada, and India, we are dedicated to transforming client visions into impactful digital realities. Our mission is clear: to harness the power of cutting-edge technology in AI, Blockchain, Web3, and Tokenization, driving growth and creating solutions that matter. With over 11 years of experience, we have successfully delivered more than 1000 projects across 50+ countries, empowering 500+ clients to thrive in today’s digital landscape. Our expertise spans custom app development, legacy system modernization, and innovative tech deployments tailored to each client's needs. Our team of 250+ seasoned professionals—including developers, engineers, designers, and digital strategists—is proficient in 35+ tools and languages, ensuring each project is built on a foundation of innovation, quality, and functionality. By integrating sleek design with advanced technology, we craft human-centered UI/UX experiences that stand out in the market. Customer satisfaction is at the heart of what we do, and we are dedicated to delivering excellence in every project. We’ve partnered with leading brands like BuzzTime, Gold’s Gym, Share My Ride, Payhoo, huBear, and Mediport, building a track record of trust and reliability.Looking for work in .NET DevelopmentLocated in Mountain View, United States (+1)From €1,000 for .NET DevelopmentWorked in Sports (+1)Speaks English, Hindi201-500 membersTechcronus Business Solutions
5(66 reviews)Your Digital Transformation Partner
Techcronus is a full-service digital agency helping businesses with innovative web, mobility, cloud, AI and data analytics solutions since 2013. Brands like Starbucks, Unilever, IKEA, Fererro trust us for their digital transformation needs. We have successfully delivered more than 500 projects across Retail/eCommerce, Manufacturing, Healthcare, Travel, Sports & Gaming, Finance and Education industries. Our business offerings include: - Business Applications (ERP, Accounting and CRM Solutions) - Custom Web and Mobility Solutions - Cloud Migration - Data and AI Solutions - Product Development & Support - Staff Augmentation Our technology expertise includes: Full-stack Development .NET, PHP, Angular, React, Node, React Native Ruby on Rails Python, OpenAI, and ChatGPT Azure and AWS Cloud Dynamics 365 ERP and CRM Power BI, Power Apps Please visit our portfolio to see our work samples: https://www.techcronus.com/case-studies/ D&B D-U-N-S Number : 91-519-0599 For free consultation regarding your software development needs, please write to us on business@techcronus.com or connect on Skype (techcronus). Our Global Locations: 1. Techcronus Business Solutions Pvt. Ltd. 821, Stratum @ Venus Ground, Nehrunagar, Satellite Road, Ahmedabad - 380015, Gujarat, India 2. Techcronus Inc. 3705 W Pico Blvd, Unit #606, Los Angeles, CA 90019, United States 3. Techcronus Australia Pty Ltd. 81-83 Campbell Street, Surry Hills, NSW 20101 work in .NET DevelopmentLocated in Los Angeles, United States (+2)From €1,000 for .NET DevelopmentWorked in Media (+18)Speaks English, French(+3)51-200 membersInApps Technology
5(15 reviews)The Trusted Technology Companion In Your Digital Journey
Top awardedYour Trusted, AI-Driven Software Partner InApps Technology is an industry leader in software outsourcing and ODC/IT Staff Augmentation. On Sortlist we’re consistently top-ranked, including #1 in Vietnam for Application Development and IT Staff Augmentation, top tier across Southeast Asia, and recognized globally backed by strong reviews and client referrals. What sets us apart - AI-Driven Development: We embed GenAI across the lifecycle requirements mapping, code generation, test automation, and observability to ship faster with higher quality. - Elite Talent, On Demand: Curated senior engineers for mobile, web, cloud, data/AI, and blockchain. Start interviewing in 1–2 weeks. - Flexible Engagements: ODC/dedicated teams, IT Staff Aug, or outcome-based projects—scale up/down without friction. - Security & IP Protection: Security-first workflows, strict access control, and full IP ownership on delivery. Proven Value: Transparent pricing and offshore efficiency that can save up to 65% versus local hiring while maintaining enterprise-grade standards. Where we excel SaaS platforms, FinTech, eCommerce/Marketplaces, EdTech, Healthcare, Logistics, and Blockchain/Web3. How we work Clear sprint cadence, demo-every-two-weeks, proactive risk management, and executive-level reporting. Expect responsive communication, English-fluent teams, and time-zone overlap for smooth collaboration. Ready to move from idea to impact? Share your brief on Clutch or request a free 30-minute discovery call. We’ll respond within 24–48 hours with a tailored approach, team mix, and first milestones.Looking for work in .NET DevelopmentLocated in El Segundo, United States (+1)From €1,000 for .NET DevelopmentWorked in Software & Computer Services (+13)Speaks English51-200 membersKonstant Infosolutions
5(1 review)Creative. Innovative. Functional.
Top awardedAt Konstant Infosolutions, we are not just software developers; we are your strategic partners in harnessing the power of emerging technologies. With over two decades of excellence in delivering cutting-edge software solutions, we are poised to drive your enterprise into the future. We blend our creativity and technical expertise to create exquisite, sharp, customer-centric, ideal mobile apps, websites, and online stores using AI, IoT, ML, and Cloud Computing. Our skilled team of tech leads and experts delivers cost-effective, customized software solutions. With clients spanning the USA, Europe, Middle East, and Asia, our mission is to democratize digital services worldwide. Driving Innovation beyond Boundaries: Innovation is at the heart of everything we do. We are not content with simply meeting industry standards; we continuously push the boundaries of what's possible in app development (web/mobile). Our commitment to research and development ensures that we stay at the forefront of technological advancements, enabling us to deliver solutions that are not only relevant today but also anticipate the needs of tomorrow. This dedication to innovation sets us apart as your trusted partner in achieving digital excellence. > Established in 2003 > Headquarters in Jaipur, Rajasthan, India Business Solutions & Services We Provide For over 22 years, Konstant Infosolutions has been delivering top-notch IT solutions globally. We're your experienced partner, helping you stay ahead of competitors and seize opportunities. Custom Solution Development (App & Web): > Crafting tailored software solutions that redefine digital experiences and drive business excellence. > Elevating your business with bespoke mobile apps and web platforms designed to meet unique requirements. Dedicated Development Team: > Our dedicated teams bring unwavering focus and expertise to your projects, ensuring seamless integration and innovation. > Assembling seasoned professionals dedicated to your success, fostering synergy with your in-house operations. Staff Augmentation (Onshore & Offshore): > Empowering your projects with the right talent at the right time, whether onshore or offshore, for adaptability and productivity. > Flexibility to meet evolving project needs, maintaining optimal productivity and course for success. Enterprise Content Management System: > Streamline content management. > Enhance customer engagement with robust ECM systems. Business Intelligence Systems: > Unlock data-driven insights. > Custom BI solutions for informed decision-making. Business Process Automation: > Streamline operations for efficiency. > Automation for supply chain, finance, procurement, and more. Project Management: > On-time, on-budget project success. > Cutting-edge tools and top talent for project excellence. Cloud Consulting: > Scalable and efficient cloud solutions. > Achieve reliability, mobility, and efficiency. Emerging Technologies as Services: > AI/ML (Artificial Intelligence/Machine Learning): Harness the power of AI and ML to unlock data-driven insights, automation, and predictive capabilities, driving smarter decision-making. > AR/VR (Augmented Reality/Virtual Reality): Explore immersive technologies for innovative applications and enhanced user experiences that set you apart in the market. > Blockchain: Leverage the potential of blockchain for secure, transparent, and decentralized solutions that redefine trust in digital transactions. > IoT (Internet of Things): Connect and control devices to gather valuable data, enabling smarter and more informed business strategies. > Wearables: Develop wearable technology solutions for industries such as fitness, healthcare, and beyond, enhancing user engagement and health outcomes.Looking for work in .NET DevelopmentLocated in Palo Alto, United States (+2)From €5,000 for .NET DevelopmentWorked in Entertainment & Events (+1)Speaks English51-200 membersBluelight
(0 review)👨💻 Bluelight is a leading custom software development company with a team of top-quality software developers from 6 different countries spanning the US, Canada, and LATAM, enabling companies to achieve their roadmaps with speed and precision. 🛠️ We offer a wide range of services, including Software Development Services, Staff Augmentation, Development Teams, SOC 2 Compliance, DevOps and Cloud Services, Custom AI Solutions, and much more. 🤖 We have expertise in various technologies such as React, Node.js, Python, .NET, Java, Ruby, PHP, Golang, and Angular. 📲 Bluelight also provides solutions in QA Testing & Automation, Business Intelligence, Data Science, iOS and Android App Development, and UX/UI Design. 🚀 Our mission is to be a reliable partner empowering businesses with cutting-edge software, technology, and infrastructure solutions that deliver value and drive societal transformation.Looking for work in .NET DevelopmentLocated in Sacramento, United StatesFrom €10,000 for .NET DevelopmentWorked in Logistics & Supply ChainSpeaks English201-500 membersAkveo
5(1 review)Here to Build
Akveo is an international software development firm that creates innovative digital solutions to help businesses grow. Specializing in custom software, low-code/no-code platforms, and UI/UX design, we empower companies of all sizes to turn their concepts into scalable, high-performing applications. As a certified Retool development partner and React Native expert (https://www.akveo.com/services/mobile-application-development/react-native), Akveo has successfully completed 500+ projects across sectors like finance, healthcare, eCommerce, and EdTech. Our team of experienced software engineers, designers, and business analysts works collaboratively to deliver top-quality solutions. From cross-platform mobile development to MVP creation and AI-driven automation, we are dedicated to providing exceptional results that surpass client expectations.Looking for work in .NET DevelopmentLocated in Warsaw, PolandFrom €3,000 for .NET DevelopmentWorked in Insurance (+6)Speaks English, German(+2)51-200 membersVardot
(0 review)Enterprise Drupal platforms for global nonprofits, universities, and media organizations
Vardot is a Drupal and open-source partner that builds reliable, mission-critical digital platforms for organizations driving real-world impact. Since 2011, we've designed, built, and launched 200+ web platforms across 30+ countries for organizations including UNHCR, UNICEF, BCG, and Georgetown University, rated 4.9/5 on Clutch across 60+ verified reviews. We cover the full lifecycle: strategy, UX and design, custom development, migration, support and maintenance, and DevOps. We're a Drupal Diamond Certified Partner, one of the largest Acquia-certified teams in the world, and a Top 20 contributor on drupal.org. We created and maintain Varbase, a widely used enterprise Drupal distribution, and as a Gold Sponsor of the Drupal AI Initiative, we're building toward AI-ready enterprise platforms. Clients choose us for deep technical expertise, secure and standards-compliant delivery, and a proven track record on complex enterprise and public-sector builds.Looking for work in .NET DevelopmentLocated in Santa Clara, United StatesFrom €1,000 for .NET DevelopmentWorked in Non-profit (+6)Speaks English, Arabic201-500 membersChudovo OÜ
5(21 reviews)Complex Systems Implementation
Highly recommendedTop awardedChudovo is a custom software development company, focused on complex systems implementation. Customers rely on our expertise, appreciate transparency in time, budget, visibility of work progress, and our assistance in achieving their business objectives with high-quality solutions. Our teams follow best development practices and methodologies and apply their experience in such industries as healthcare, finance, e-commerce, logistics, telecommunications, and others. In our portfolio, we have over 190 successfully implemented web, mobile, desktop, cloud, embedded, and AI projects. With our commitment to innovation, we bring together cutting-edge technologies, visionary strategies, and creative minds to breathe life into your visions and ideas.33 works in .NET DevelopmentLocated in New York, United States (+4)From €3,000 for .NET DevelopmentWorked in Hospitals & Healthcare (+19)Speaks English, German(+2)51-200 memberseInnoSys
(0 review)Advanced SECS/GEM Solutions & AI/ML Innovations for Semiconductor Factory Automation
eInnoSys is a global leader in SECS/GEM, Equipment Software & Factory Automation for Semiconductor, and other related Electronics industries. We have Experts in SECS/GEM, GEM300, Smart Factory & Industry 4.0 Domain knowledge.Looking for work in .NET DevelopmentLocated in Newark, United StatesFrom €10,000 for .NET DevelopmentWorked in Pharmaceuticals & BiotechSpeaks English11-50 membersFulminous Software
5(38 reviews)WE LOVE TO BUILD ASK FOR IT AND HAVE IT
Top awardedWe are Fulminous Software, a skilled web and mobile app development company with a proven history of creating popular and profitable apps. We're known for our knack for enhancing existing apps and websites to make them even better, ensuring people keep downloading and enjoying them. Our dedicated team is here to turn your ideas into reality. The company’s biggest strength is its team which I a mix of most ingenious and focused individuals who are adroit in whatever they do. They believe in delivering flawless and reliable solutions to clients that match business needs and drive business growth. We are looking for strategic partnerships from around the globe. If you are interested please contact us today. Client's Feedback About US: https://clutch.co/profile/fulminous-software-private#highlights https://www.bark.com/en/in/company/fulminous-software-private-limited/9AKJO/ Our Key services: * Custom Software development * Mobile App Development (Android App, iPhone App, Cross-Platform App) * Custom Game Development (AR, VR, iOS, Android, NFT, Metaverse, 2D, 3D) * Salesforce Development (Lightning, Implementation, Consulting) * Web Development * Mobile Game Development * Desktop Game Development * Xamarin App Development * Wearable Devices App Development * Enterprise App Development * CRM & ERP Development * Digital MarketingLooking for work in .NET DevelopmentLocated in Clarendon County, United States (+2)From €1,000 for .NET DevelopmentWorked in Video games (+9)Speaks English51-200 membersELEKS
5(1 review)Your trusted partner for guaranteed software delivery
Top awardedELEKS is your trusted partner for guaranteed software delivery. Combining over 30 years of industry insight with cutting-edge AI technology, we help businesses worldwide deliver their unique software vision through bespoke full-cycle solutions.Looking for work in .NET DevelopmentLocated in Las Vegas, United States (+14)From €20,000 for .NET DevelopmentWorked in Energy & Oil (+10)Speaks English, German(+1)1001-5000 membersTRIARE
4.9(11 reviews)TRIARE unlocks IT potential of YOUR business
TRIARE is a WEB and MOBILE software development company based in Europe. We are delighted to offer our services as your long-term partner, taking all technical matters off your shoulders and allowing you to focus on your business development. YOU WILL GET: ✔ In-house team . Work with a dedicated team that is 100% focused on your product and located in the same office. ✔ Efficiency & transparency , as our process is based on Scrum methodology and managed by certified Scrum Masters. ✔ Fast result. Working with us, you will get the first result in 1 week. ✔ High quality, as TRIARE has well-established processes of software development and experienced specialists. ✔ Full cycle development . Our company covers all stages of development, handling everything from Discovery and prototyping to Design, development, and maintenance. ✔ IP rights . From the very beginning, you are the only owner of the intellectual property of your project materials: source code, design, documentation, etc. ✔ Warranty period will be provided for your system for free. ASPECTS OF OUR MINDSET: - Focused on results. We are focused on the result of your business with an understanding of the real goals and KPIs that our team should achieve. - Solution Provider. It means that we always come to you with solutions, not with questions. We take all technical aspects of the project off your shoulders, allowing you to focus on the marketing and business strategies. - We go the extra mile. Being a proactive company, we always think and take a step ahead. TECHNOLOGIES WE USE: - Mobile app development: Kotlin, Java, Swift, Objective-C. - Cross-platform development: Flutter, React Native. - Web frameworks: Node.JS, React.JS, PHP, Ruby on Rails.Looking for work in .NET DevelopmentLocated in Fairfax, United States (+3)From €5,000 for .NET DevelopmentWorked in Hospitals & Healthcare (+20)Speaks English, Ukrainian51-200 membersDebut Infotech
5(7 reviews)Results, Not Promises
RecommendedDebut Infotech is an AI-augmented blockchain and software development company helping organizations across financial services, healthcare, supply chain, and digital platforms build systems that perform reliably in complex, regulated environments. Founded in 2011 and blockchain-native since 2015, the company brings engineering discipline and technology depth to enterprises moving from fragmented pilots to production-grade systems. With delivery centers across the USA, UK, Canada, and India, Debut Infotech combines regional market understanding with globally distributed engineering capability — enabling clients to move with speed, consistency, and governance. Service areas: Artificial intelligence and generative AI — Enterprise LLM integration, AI agent development, retrieval-augmented generation (RAG) pipelines, predictive analytics, computer vision, and intelligent process automation embedded at the system architecture level. Blockchain and Web3 development — Smart contract engineering, DeFi protocol development, real world asset (RWA) tokenization, cryptocurrency exchange infrastructure, and enterprise blockchain on Hyperledger Fabric and Corda. Mobile application development — Native iOS, Android, and cross-platform applications (React Native, Flutter) architected for AI integration, enterprise-grade security, and sustained performance under production load. Web and software development — Full-stack web platforms, SaaS products, and enterprise software systems engineered API-first, designed for long-term maintainability and organizational scale Proven Delivery: $62M+ raised across client platforms including Ifinca, IntegraLedger, Everledger, and TĒM 90% customer success score across enterprise engagements 15 years of enterprise software delivery Fortune 500 clients and high-growth startups across 25+ industry verticals 50–249 engineers spanning AI, blockchain, and software disciplinesLooking for work in .NET DevelopmentLocated in Cook County, United States (+2)From €10,000 for .NET DevelopmentWorked in Others (+11)Speaks English51-200 membersSociiLabs LLC
5(1 review)Solving big problems with even bigger brains (and AI).
At Sociilabs, we harness the power of artificial intelligence to deliver innovative solutions tailored to address the challenges of today's dynamic business landscape. Our commitment is to empower organizations with cutting-edge technologies that drive efficiency, enhance decision-making, and foster growth. With a blend of AI expertise and industry insights, we collaborate closely with our clients to design and implement solutions that not only meet their immediate needs but also pave the way for future opportunities. Whether it's optimizing operations, improving customer engagement, or unlocking new revenue streams, Sociilabs is your trusted partner for transformative AI solutions. Join us on our journey to redefine what's possible with AI and make a lasting impact on businesses and communities worldwide. Connect with us to explore how we can help your organization thrive in the age of AI.Looking for work in .NET DevelopmentLocated in Sheridan, United StatesFrom €1,000 for .NET DevelopmentWorked in Marketing & Advertising (+1)Speaks English, Turkish(+1)1-10 membersLionwood.software
5(8 reviews)Find the Perfect Solution
Lionwood.software specializes in crafting custom software solutions tailored to meet the unique needs of businesses across various industries. Our expertise spans software development, application creation, IT solutions, and consultancy services. We have extensive experience building WMS, ERP, TMS, and CRM platforms. Many projects focus on transforming legacy software into cloud-ready architectures that improve performance, usability, and maintainability. Our services include: - Software Product Development Services; - Product Design Services; - MVP Development Services; - Web App Development Services; - Mobile App Development Services; - AI Software Development Services.1 work in .NET DevelopmentLocated in New Castle County, United StatesFrom €5,000 for .NET DevelopmentWorked in Marketing & Advertising (+10)Speaks English, Ukrainian51-200 membersEchoGlobal
5(2 reviews)★ Hire Top Remote Software Developers
Top awarded☂ ISO 27001 Certified Tech Talent Provider | ⚑ Eastern Europe & LATAM | ◉ Trusted by Fortune 500 Companies | ✔ 10+ Years of Experience | ✱ 1-Week Risk-Free TrialLooking for work in .NET DevelopmentLocated in Miami, United States (+4)From €10,000 for .NET DevelopmentWorked in Construction (+8)Speaks English, Estonian(+3)11-50 members