Top Software Development Companies in San Francisco, California

GeekyAnts

AI Digital Product Engineering & Consulting Firm

GeekyAnts is an AI-powered digital product engineering and consulting company helping startups, enterprises, and Fortune 500 brands build scalable, future-ready digital solutions. Since 2006, we have delivered 800+ successful projects for 550+ global clients across healthcare, BFSI, retail, logistics, education, and enterprise technology. We help businesses accelerate digital transformation through strategy, design, engineering, and AI-led innovation. What We Do AI Consulting and Transformation We help organizations adopt and scale AI through Generative AI solutions, AI copilots, intelligent automation, agentic workflows, predictive analytics, RAG implementations, and AI strategy consulting focused on measurable business outcomes. AI-Powered Product Engineering We design, validate, and build scalable digital products — from MVPs to enterprise platforms — with a focus on speed, scalability, performance, and user-centric experiences. Enterprise System Modernization We modernize legacy systems into scalable, cloud-ready architectures through platform modernization, workflow automation, API transformation, DevOps, and infrastructure optimization. Digital Customer Experience We create seamless web and mobile experiences through UI/UX design, application development, accessibility, and performance-focused engineering that improves customer engagement. Our Highlights 800+ successful projects 550+ global clients GeekyAnts has partnered with globally recognized brands including Google, Darden, Olive Garden, SKF, ICICI Securities, Pepperfry, MPL, and WeWork, delivering impactful digital products and enterprise solutions at scale. Beyond client delivery, GeekyAnts is also recognized for its open-source contributions through products such as NativeBase and gluestack-ui, trusted by developers worldwide. With offices across the USA, UK, and India, we bring together strategists, designers, engineers, and AI specialists to solve complex business challenges through technology.

Diffco

Your trusted software development partner

Diffco is a San Jose-based company specializing in AI, custom software development, and staffing services. With more than 17 years of expertise in creating dependable solutions for mobile, web, and AI applications, it is committed to driving and supporting the growth of your business. Products we developed are used by renowned companies such as American Express, Starbucks, Whole Foods, Mars, and many successful startups like Maze, Happier, and Legion Farm, among many others. Why Diffco? For your project development: -Client-driven approach and clear communication -Transparent processes and billing -Detailed reporting and deliverables -Dedicated project team with no cross-project sharing For your team augmentation: -Transparent pricing with no hidden fees -Vetting and verification of team member expertise -Fast and straightforward hiring for both long and short-term projects -A dedicated account manager to facilitate interactions with both candidates and hired personnel

Radixiy

Enterprise Data Management, MDM, Data Integration, Implementation, SaaS, Custom Software Development, Databricks

Radixiy is a California based technology consulting firm founded by Silicon Valley technology leaders with more than 25 years of experience delivering enterprise-scale software, cloud, AI, and data platforms. While Radixiy is a young company, our leadership team has successfully delivered mission-critical solutions for global enterprises, bringing proven expertise with the agility and responsiveness of a modern consulting partner. By combining deep domain expertise with leading technology platforms, we help organizations establish trusted data foundations, accelerate innovation, and achieve sustainable business outcomes. With over a decade of experience and a team of certified experts, we deliver software solutions that are reliable, resilient, and scalable. Our tech-first mindset, agile approach, and deep industry experience make us the trusted partner for startups, governments, and enterprises alike. With a team of experienced IT professionals, we deliver tailored solutions that ensure scalability, compliance, and long-term value. Core Technical Domains * Custom Software Development: End-to-end engineering of digital products, including SaaS platforms and enterprise applications/web platforms, API design & systems integration, Microservices architecture, Backend engineering & optimization and Secure, compliant application development. * Cloud-Native Architecture: Designing scalable, high-availability systems with a strong focus on auto-scaling, load balancing, and fault tolerance. * DevSecOps & Security: Implementation of secure SDLC, identity and access management (IAM), and compliance with global standards like GDPR and ISO 27001. * Infrastructure as Code (IaC): Automating environment provisioning and management using tools such as Terraform, CloudFormation, or Deployment Manager. Specialized Platforms * Cloud Infrastructure: Expert-level mastery of AWS (Amazon Web Services), Google Cloud Platform (GCP), and Microsoft Azure. * Web Platforms: Full-stack development focusing on modern frameworks and responsive design. * Containerization & Orchestration: Heavy use of Kubernetes and Docker for deploying microservices. * Database Systems: Management of distributed and managed databases such as Oracle, PostgreSQL, MySQL, MariaDB, NoSQL (MongoDB), etc. Support & Maintenance Radixiy’s support and maintenance services are not just an "afterthought" or a helpdesk; they are an extension of their 3R philosophy. IT Strategy & Planning * IT Roadmap & Strategic Planning * Enterprise Architecture Consulting * Technology roadmap development aligned with business objectives. * Digital transformation and modernization strategies. * IT governance, risk management, and compliance planning & PMO advisory * IT Project Management & Implementation * CTO / CIO Advisory Services * Business Process Optimization Cloud / Infrastructure / DevOps * Cloud readiness assessments and migration support (AWS, Azure, Google Cloud). * Network architecture and optimization. * Server and storage consolidation strategies. * Security First Architecture * Cost Optimization * DevOps, CI/CD, GitOps & Agile Software Delivery * Monitoring & Observability * Managed Cloud Operations Application & Systems Consulting * Enterprise Resource Planning (ERP) system evaluation and support. * Software selection and vendor management. * Legacy system modernization. * Custom Application/Software, Development, SaaS Product * Software Architecture & System Integration * API Development & Integration, Middleware development, Workflow Automation * System Integration Services * QA & Test Automation Data Management & Analytics * Data Warehouse, Data Engineering * Data governance, quality and architecture. * Business Intelligence (BI) dashboards and custom reporting. * Data privacy and compliance (GDPR, CCPA) * Predictive Analytics * Dashboard Development * Real-Time Analytics * Big Data Processing * AI / ML Solutions * NLP & Conversational AI Training, Support & Maintenance * Managed IT Services * Application, Software and Infrastructure Support * Cybersecurity & Risk Management * 24/7 Monitoring and SLA based support * Integration & Cloud Support * Security Compliance * Upgrade, Patch and Security Management * IT helpdesk design and process
optimization. * Employee training on cybersecurity awareness, tools, and workflows. Cybersecurity & Risk Management * Cybersecurity Consulting * Security posture assessments and Vulnerability Assessment & Penetration testing. * Policy development and compliance with industry standards (NIST, ISO 27001, HIPAA, CCPA). * Implementation of security tools (SIEM,XDR, MFA, endpoint protection). * Incident response and disaster recovery planning. * Data Protection & Encryption * Security Monitoring & Incident Response

CitrusBits

AI, XR, and healthcare software experts building secure, scalable digital products and Software as a Medical Device (SaMD) solutions.

CitrusBits is a digital innovation company specializing in custom software development, AI solutions, immersive XR technologies, and Software as a Medical Device (SaMD) platforms. With over 15 years of experience, we help startups, healthcare organizations, and enterprises transform complex ideas into scalable, secure, and high-impact digital products. Our multidisciplinary team designs and develops mobile apps, SaaS platforms, AI-driven systems, and immersive training solutions that improve real-world outcomes. From product strategy and UX design to engineering and deployment, we partner closely with clients to deliver reliable, future-ready technology. At CitrusBits, our focus is on innovation, quality, and building meaningful digital solutions that solve real problems across healthcare, enterprise, and emerging technology industries.

Spiral Scout helps companies turn messy, high-stakes workflows into durable, agent-driven production systems. We step in where internal teams or generic agencies stall — typically at the intersection of automation, data, and AI that must operate inside real business constraints. We don’t sell headcount or ticket delivery. We design and ship working systems that run reliably, scale over time, and stand up to audits. From AI agents and long-running workflow orchestration to CPQ and complex SaaS platforms, we take responsibility from architecture through production readiness — and leave clients with systems they can own and operate independently.

Tech.us

Build Better

Tech.us is a leading software development company headquartered in the US. It offers innovative software solutions using the latest technological advancements, including AI and ML. It serves businesses of all sizes, from Fortune 500 companies to emerging startups across various industries like Retail, Manufacturing, Healthcare, Automotive, Legal, and many more. Our key services include AI development and consultation, custom software development, cloud computing, and mobile app development, etc.

WLCM App Studio

Verified

WLCM is a custom software design and development studio.

WLCM is a custom software design and development studio. A tight-knit and long-standing veteran team, we've built our reputation winning "best in class" recognition by Apple, “Best of Experience Design” by FastCo, and "Best in Business" by Inc.

IntuitionLabs

Veeva, AI, and data solutions for life sciences.

IntuitionLabs is a premier technology firm based in San Jose, California. We specialize in building custom artificial intelligence (AI) software and enterprise solutions for the pharmaceutical and life sciences industries. Founded by 25 year software engineering veteran Adrien Laurent, our company helps biotech teams use advanced technology while staying compliant with strict global health rules. We ensure every project meets critical standards like FDA 21 CFR Part 11, EMA Annex 11, GxP, and HIPAA. Our Specialized Services We operate where advanced data engineering meets the Veeva Systems ecosystem. Our San Jose based team helps mid to large cap pharmaceutical companies manage their digital growth with precision. Official Veeva Vault CRM X Pages Partner As a certified partner, we provide expert level implementation and customization for the Veeva software stack. We specialize in the Development Cloud for Clinical, Regulatory, Quality, and Safety suites. We also use Veeva Nitro to unify fragmented data into a single source of truth. Pharmaceutical AI and Analytics We design high performance AI tools that work within strict clinical guardrails. This includes Medical Info Chatbots for healthcare professionals and Sales Operations Assistants for territory management. Our tools are built to ensure data integrity and eliminate errors. Data Engineering and Warehousing We build the robust technical plumbing required for enterprise scale AI. Our team optimizes cloud platforms like Snowflake, Redshift, and BigQuery to help you make better, data driven decisions. Quality and Computer System Validation We provide documented evidence of system performance through specialized CSV services. We also offer process automation (RPA) for regulatory submissions and pharmacovigilance to keep your business audit ready. The IntuitionLabs Method What sets us apart is our structured four step framework: - Assess: We evaluate your AI maturity and data readiness. - Train: we host workshops where your team learns to build real projects. - Support: We provide constant technical help and office hours. - Measure: We track time saved and ROI with regular reviews. Why Choose IntuitionLabs? IntuitionLabs delivers real world results for industry leaders like Scilex Holding Company. We remove the extra complexity from your systems so you can focus on the future of medicine. By combining deep technical skill with pharmaceutical industry knowledge, we help our clients move faster and with more confidence. If you are looking for a professional partner in San Jose for Veeva services or custom pharma AI solutions, IntuitionLabs offers the expert support you need.

G360 Technologies

Verified

G360 Technologies helps companies develop custom software solutions while maximizing the opportunities created by the...

G360 Technologies helps companies develop custom software solutions while maximizing the opportunities created by the use of Cloud & AI. We take the time to understand our customers unique business challenges and are 100%-focused on business outcomes.

Vincit

Digital Development and Design Agency with strong AI capabilities

Vincit is a trusted partner for companies like Logitech, Cisco, The New York Times and LTK in developing their digital products and services. With roots in Finland and presence in the US since 2016 we are now over 500 experts ready to serve you. We combine meaningful user experience design to top-tier technical development for mobile, web and cloud. With the use of latest AI tools, we are able to deliver projects more efficiently and help your organization gain AI-Driven-Development capabilities throughout the collaboration. Ask us for free consultation and quote for your project. We are especially interested in challenging projects with established companies.

Double Coconut

A boutique work for hire game studio, with a specialty in web games, mobile, and back-end systems.

Our team is onshore and offshore, experienced at snarly technical problems -- from full-scope production to live-ops, we can help! We've shipped hits for clients such as WB Games, EA Sports, Microsoft, Penn National Gaming, DraftKings, Rush St. BET Networks, Cartoon Network, Splinterlands, Sky Mavis, Ellen Degeneres, and more.

ClosedCast

Your Videos Deserve a Private Streaming Archive.

ClosedCast is a private streaming archive that helps families, churches, coaches, educators, membership organizations, and businesses collect, organize, preserve, and stream their own videos. Whether you're building a family video archive, church video archive, training video library, or organizational video library, ClosedCast transforms scattered video files into a secure, searchable, Netflix-style streaming experience.

ScalaCode

ScalaCode is an AI-first software engineering company providing custom AI development, dedicated developer teams, and enterprise software solutions. They specialize in AI-powered platforms including recruitment, healthcare, and e-commerce applications, serving 1,300+ clients with 250+ engineers across 6 countries.

Anfloy

Grow Sell Operate like an AI-native company.

Your AI and GTM engineering team. We build the GTM engines and custom AI products that run your revenue.