Custom Software Development USA | Enterprise Solutions
Transform your business with our expert solutions
Custom Software Development USA | Enterprise-Grade Solutions
Transform your business with custom software solutions engineered for the demanding US market. Big0 delivers enterprise-grade software development services to American companies from Fortune 500 corporations to high-growth startups across San Francisco, New York, Austin, Seattle, and beyond. Our US-focused development teams build scalable, secure software that drives innovation, efficiency, and competitive advantage in the world's largest technology market.
We understand the unique demands of American businesses—from SOC 2 compliance requirements for enterprise sales to HIPAA regulations for healthcare software, from Delaware C-Corp equity structures to the agile methodologies expected by US stakeholders. Our development approach combines Silicon Valley innovation with the reliability and security standards required by American enterprises.
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Get Started TodayWhy US Companies Choose Big0 for Software Development
Fortune 500 Enterprise Experience Proven track record delivering mission-critical software to America's largest corporations. We understand enterprise procurement processes, security requirements, compliance standards (SOC 2, ISO 27001), and the rigorous quality expectations of Fortune 500 companies across industries from finance to healthcare to retail.
Silicon Valley Engineering Excellence World-class engineering practices honed in Silicon Valley's competitive tech ecosystem. We employ agile methodologies, DevOps practices, continuous integration/deployment, and modern architecture patterns used by leading US tech companies. Our code quality and development velocity meet the standards expected in America's innovation hubs.
Regulatory Compliance & Security Navigate complex US regulatory landscape with confidence. We build software compliant with SOC 2 Type II (required for enterprise sales), HIPAA (healthcare), SOX (public companies), GDPR/CCPA (privacy), and industry-specific regulations. Our security-first approach protects your business and customers while meeting compliance requirements for US markets.
Venture-Backed Startup Experience Deep expertise building MVPs and scaling platforms for venture-funded startups. We've helped companies raise over $250M in VC funding across Silicon Valley, NYC, Austin, and Boston, delivering investor-ready software that demonstrates product-market fit and attracts top-tier American venture capital.
Comprehensive Software Development Services
Custom Enterprise Software
Business Process Automation Transform manual workflows into efficient automated systems tailored to your American operations. We build custom workflow engines, approval systems, document processing platforms, and integration layers that connect disparate systems across your organization, reducing operational costs by 40-60% while improving accuracy and compliance.
Enterprise Resource Planning (ERP) Custom ERP solutions designed for US business requirements including multi-entity accounting (often necessary for Delaware C-Corps with subsidiaries), inventory management, supply chain optimization, financial reporting for US GAAP compliance, and integration with popular American business systems like QuickBooks, NetSuite, and Salesforce.
Customer Relationship Management (CRM) Tailored CRM platforms optimized for American sales processes, including enterprise B2B sales cycles, account-based marketing workflows, opportunity tracking aligned with US sales methodologies, and integration with tools popular in US markets (HubSpot, Marketo, ZoomInfo). Our CRMs have supported sales teams from 10 to 1,000+ reps.
Supply Chain & Logistics Software Advanced logistics platforms serving US distribution networks, including warehouse management systems, transportation management, route optimization for US geography, real-time tracking, and integration with major US carriers (FedEx, UPS, USPS). Our solutions have optimized supply chains handling millions of shipments annually across North America.
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Get Started TodaySaaS Platform Development
Multi-Tenant SaaS Architecture Scalable SaaS platforms built for the competitive US market. We architect multi-tenant systems with data isolation, tenant-specific customization, usage-based billing, sophisticated admin panels, and the 99.9%+ uptime expected by American enterprise customers. Our SaaS platforms serve thousands of customers processing millions of transactions daily.
Subscription & Billing Systems Comprehensive subscription management including multiple pricing tiers, free trials with optimized conversion, usage-based pricing, annual vs. monthly billing, automatic renewal and dunning, and integration with US payment processors (Stripe, Chargebee, Recurly). We've processed over $500M in subscription revenue for American SaaS companies.
API-First Architecture Modern API-first platforms enabling integration with the diverse tech stacks used by US enterprises. We build RESTful APIs, GraphQL endpoints, webhook systems, developer portals with documentation, and SDKs for popular languages, supporting the integration-heavy environment of American business software.
SaaS Analytics & Reporting Sophisticated analytics platforms providing the metrics American SaaS companies need: MRR/ARR tracking, churn analysis, cohort analytics, usage metrics, customer health scores, and executive dashboards. Our analytics systems support data-driven decision making for hundreds of US SaaS companies.
Legacy System Modernization
Mainframe & Legacy Migration Transform legacy systems into modern cloud-native applications without business disruption. We've migrated mission-critical systems for US enterprises from mainframes, AS/400, and decades-old codebases to modern architectures, preserving business logic while dramatically improving performance, security, and maintainability.
Database Migration & Optimization Migrate from legacy databases to modern cloud-native solutions (AWS RDS, Azure SQL, Google Cloud SQL) or modernize existing databases for better performance. We handle complex data migrations ensuring zero data loss and minimal downtime for systems serving American customers 24/7.
API Wrapper Development Extend life of legacy systems by wrapping them with modern APIs. We create RESTful API layers around legacy systems, enabling integration with modern applications, mobile apps, and third-party services while you plan long-term modernization strategies. This phased approach reduces risk and spreads costs over time.
Technology Stack Updates Modernize outdated technology stacks to current versions supported by security patches and compatible with modern development practices. We've upgraded systems from .NET Framework to .NET Core, Python 2 to Python 3, Angular.js to modern Angular/React, and legacy Java to modern Spring Boot applications.
Business Intelligence & Analytics
Data Warehousing Solutions Enterprise data warehouses consolidating data from across your organization for comprehensive analytics. We implement solutions using AWS Redshift, Google BigQuery, Snowflake, or Azure Synapse, optimized for the analytical needs of US businesses including financial reporting, operational metrics, and executive dashboards.
Custom Reporting Platforms Tailored reporting systems delivering the specific insights your American stakeholders need. We build executive dashboards, operational reports, compliance reporting for US regulations, and self-service analytics platforms empowering business users across your organization.
Predictive Analytics & ML Integration Advanced analytics incorporating machine learning for forecasting, anomaly detection, customer behavior prediction, and optimization. Our predictive models have helped US companies reduce churn, optimize inventory, detect fraud, and improve operational efficiency.
Real-Time Analytics Platforms Stream processing and real-time analytics for time-sensitive business needs. We build systems processing millions of events daily, providing instant insights for trading platforms, fraud detection, operational monitoring, and customer-facing analytics serving American users.
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Get Started TodayIndustry-Specific Solutions
Financial Services Software
Secure, compliant software for US financial institutions including banks, investment firms, insurance companies, and fintech startups. We build trading platforms, risk management systems, fraud detection, regulatory reporting (SOX, Dodd-Frank), and customer-facing applications processing billions in transactions for American financial markets.
Healthcare Software Solutions
HIPAA-compliant software serving US healthcare providers, payers, and health tech companies. Our healthcare solutions include electronic health records (EHR), practice management systems, patient portals, telemedicine platforms, medical billing, and population health management serving thousands of American healthcare organizations.
Retail & E-commerce Platforms
Omnichannel commerce platforms for the $1.1 trillion US retail market. We build point-of-sale systems, inventory management, e-commerce platforms, customer loyalty programs, and unified commerce solutions connecting online and brick-and-mortar operations for retailers from boutiques to national chains.
Manufacturing & Industrial Software
Industrial software optimizing American manufacturing operations including MES (Manufacturing Execution Systems), quality management, predictive maintenance, IoT integration, and digital twin implementations. Our solutions have improved efficiency for manufacturers across the US industrial sector.
Technology Expertise
Programming Languages & Frameworks
- Backend: Python/Django, Node.js/Express, Java/Spring Boot, .NET Core, Go, Ruby on Rails
- Frontend: React, Angular, Vue.js, Next.js, TypeScript
- Mobile: React Native, Flutter, Swift, Kotlin
- Data: Python/Pandas, R, Scala/Spark
Cloud Platforms & DevOps
- Cloud: AWS (preferred by 32% of US enterprises), Microsoft Azure, Google Cloud Platform
- Containers: Docker, Kubernetes, ECS, AKS, GKE
- CI/CD: GitHub Actions, GitLab CI, Jenkins, CircleCI
- Infrastructure as Code: Terraform, CloudFormation, Ansible
Databases & Data Stores
- Relational: PostgreSQL, MySQL, SQL Server, Oracle
- NoSQL: MongoDB, DynamoDB, Cassandra, Redis
- Data Warehouses: Snowflake, Redshift, BigQuery
- Search: Elasticsearch, Algolia, AWS CloudSearch
Enterprise Integrations
- CRM: Salesforce, HubSpot, Microsoft Dynamics
- ERP: NetSuite, SAP, Oracle ERP Cloud
- Accounting: QuickBooks, Xero, Sage
- Marketing: Marketo, Pardot, Mailchimp
- Payment: Stripe, Square, PayPal, Authorize.net
Development Methodology
Agile Development Process
We employ agile methodologies standard across US tech companies: - 2-week sprints with clear deliverables - Daily standups aligning distributed teams - Sprint planning with stakeholder input - Sprint reviews demonstrating working software - Retrospectives for continuous improvement - Flexible scope adjusting to changing business needs
DevOps & Continuous Delivery
Modern DevOps practices ensuring rapid, reliable delivery: - Automated testing with 80%+ code coverage - Continuous integration catching issues early - Continuous deployment to staging environments - Blue-green deployments minimizing downtime - Automated rollbacks for instant issue recovery - Infrastructure monitoring with 24/7 alerting
Quality Assurance
Comprehensive QA ensuring enterprise-grade reliability: - Automated unit and integration testing - Load testing for US-scale traffic - Security testing and vulnerability scanning - Accessibility testing (WCAG 2.1 compliance) - Cross-browser/device testing - User acceptance testing with stakeholders
Compliance & Security Standards
SOC 2 Type II Compliance
End-to-end SOC 2 compliance for enterprise software sales in US markets: - Security controls and access management - Availability and uptime guarantees - Processing integrity and data quality - Confidentiality and privacy protections - Annual audits by certified US auditors
HIPAA Compliance
Complete HIPAA compliance for healthcare software: - Business Associate Agreements (BAA) - ePHI encryption in transit and at rest - Audit logging and access controls - Disaster recovery and backup procedures - Regular security risk assessments
SOX Compliance
Sarbanes-Oxley compliance for public company software: - Financial reporting controls - Audit trails for financial transactions - Segregation of duties - Change management procedures - Documentation and testing requirements
Data Privacy (CCPA/GDPR)
Privacy-by-design architecture meeting US data protection laws: - User consent management - Data access and deletion workflows - Privacy policy compliance - Cookie consent implementation - Data processing agreements
Ready to Transform Your Business?
Let's discuss how we can help you achieve your goals with our innovative solutions.
Get Started TodaySuccess Stories Across USA
Fortune 500 Retail Transformation
Built enterprise inventory management system for national retailer: - 1,200+ stores across USA integrated - $500M+ annual inventory optimized - 35% reduction in stockouts - $12M annual savings in carrying costs - SOC 2 Type II certified within 6 months
Silicon Valley SaaS Platform
Developed multi-tenant SaaS platform for San Francisco startup: - $15M Series B funding raised post-launch - 10,000+ enterprise customers onboarded - 99.99% uptime over 24 months - $50M ARR achieved within 2 years - Acquired by Fortune 500 company in 2023
NYC Financial Services Platform
Created trading and risk management system for Wall Street firm: - $2B+ daily trading volume processed - SOX compliant reporting and controls - Sub-100ms latency for trade execution - Zero downtime during market hours over 18 months - SEC audit passed with zero findings
Austin Healthcare Integration
Built HIPAA-compliant EHR integration platform for Texas health tech: - 250+ healthcare providers connected - 500,000+ patient records processed monthly - HIPAA compliance certified - $8M Series A funding secured - Expanded to 15 states across USA
Regional Software Development Expertise
Silicon Valley & San Francisco Bay Area
Deep connections to Bay Area's software innovation ecosystem. We understand the expectations of venture capitalists, the technical standards of Silicon Valley tech companies, and the rapid development pace required in competitive markets like San Francisco, Palo Alto, and Mountain View.
New York City Enterprise Market
Extensive experience serving NYC's enterprise software needs from Wall Street financial systems to Madison Avenue marketing technology. We understand East Coast business culture, enterprise procurement processes, and the quality standards expected by New York's sophisticated buyers.
Austin Startup Ecosystem
Growing presence in Austin's thriving tech scene. We help Texas companies scale with software that combines Southern business values with Silicon Valley technical excellence, serving the booming Austin startup ecosystem and enterprise relocations from California.
Seattle Enterprise Software
Partnerships with Seattle's enterprise software giants and innovative startups. We bring experience from the headquarters markets of Microsoft and Amazon, understanding both consumer-scale systems and complex enterprise software needs.
Boston Innovation Corridor
Experience with Boston's education technology, healthcare innovation, and biotech software needs. We combine academic rigor with commercial software excellence serving the Northeast's knowledge economy and life sciences industry.
Software Development Investment
Custom Software Development
- Business Process Automation: $75,000 - $200,000
- Custom CRM/ERP System: $150,000 - $500,000
- SaaS Platform (MVP): $120,000 - $300,000
- Legacy System Modernization: $200,000 - $1,000,000+
- Enterprise Software Suite: $500,000 - $5,000,000+
Dedicated Development Teams
- Small Team (2-3 developers): $25,000 - $40,000/month
- Full-Stack Team (5-7 developers): $50,000 - $80,000/month
- Enterprise Team (10+ developers): $100,000 - $200,000+/month
Ongoing Support & Maintenance
- Software Maintenance: $10,000 - $30,000/month
- Feature Development: $20,000 - $60,000/month
- Managed Services: $15,000 - $50,000/month
All pricing includes architecture, development, testing, deployment, documentation, and training. SOC 2 compliance, security audits, and enterprise SLAs available. Custom quotes for large-scale enterprise transformations.
Frequently Asked Questions
Quality and reliability are non-negotiable for enterprise software serving US markets. We employ comprehensive quality assurance including automated testing with 80%+ code coverage, continuous integration catching issues before they reach production, load testing simulating US-scale traffic patterns, security testing and vulnerability scanning, and rigorous code reviews by senior engineers. All code follows industry best practices and architectural patterns proven in mission-critical American systems. We provide SLAs guaranteeing 99.9%+ uptime for production systems and maintain 24/7 monitoring with automated alerting. Our development process includes multiple staging environments, automated deployment pipelines, and instant rollback capabilities ensuring reliable releases without business disruption.
We have deep expertise helping US companies achieve critical compliance certifications. For SOC 2 Type II (required for enterprise SaaS sales), we implement all necessary security controls, documentation, and processes, coordinating with certified US auditors to achieve certification typically within 6-12 months. For HIPAA compliance (healthcare software), we ensure all technical safeguards, implement Business Associate Agreements, and establish required policies and procedures. We also support SOX compliance for public companies, PCI DSS for payment processing, FedRAMP for government contracts, and ISO 27001 for international enterprise sales. Our team has successfully helped dozens of American companies achieve and maintain these certifications.
Absolutely. Legacy modernization is a specialty, and we've successfully transformed decades-old systems for US enterprises without business disruption. Our approach includes thorough assessment and documentation of existing systems, phased migration strategies minimizing risk, parallel operation during transition periods, comprehensive data migration with zero data loss, automated testing ensuring business logic preservation, and rollback plans for every phase. We've migrated mainframes, AS/400 systems, and legacy databases serving Fortune 500 companies while maintaining 24/7 availability for American customers. The key is careful planning, incremental changes, and extensive testing before each migration phase.
All code, designs, and intellectual property created for your project belong entirely to you—this is standard in US software development contracts. We provide complete code ownership transfer upon project completion, comprehensive documentation and system architecture, access to all repositories and deployment configurations, and training for your team to maintain and extend the software. We use industry-standard agreements protecting your IP, including NDAs, work-for-hire clauses, and clear IP assignment terms. Many of our enterprise clients require their legal teams to review contracts, and we happily accommodate their processes and requirements typical in US business software transactions.
Security is integrated into every phase of development, not added as an afterthought. We follow security-by-design principles including threat modeling during architecture phase, secure coding practices (OWASP Top 10 mitigation), automated security scanning in CI/CD pipelines, regular penetration testing by certified security professionals, encryption for data in transit and at rest, comprehensive access controls and authentication, and security patches applied within 24 hours of disclosure. All developers receive security training, and we conduct code reviews focused on security vulnerabilities. For enterprise clients, we provide security documentation, participate in vendor security assessments, and achieve certifications like SOC 2 Type II ensuring your software meets the security standards expected by American enterprises.
Yes, enterprise integration is a core competency. We have extensive experience integrating with systems commonly used by US companies including Salesforce, NetSuite, SAP, Oracle, Microsoft Dynamics, QuickBooks, Workday, and hundreds of other platforms. Our integration approach includes RESTful APIs for modern systems, SOAP/XML for legacy enterprise applications, database integration where appropriate, ETL processes for data synchronization, webhook implementations for real-time updates, and comprehensive error handling and retry logic. We've completed thousands of integrations for American enterprises, and our team is skilled at navigating the technical and political challenges of enterprise integration projects.
Comprehensive post-launch support ensures your software's ongoing success. We provide warranty periods covering bug fixes (typically 90 days post-launch), performance optimization and scaling support, security patches and updates, technical documentation and training, and 24/7 monitoring and incident response for critical systems. After the warranty period, we offer flexible maintenance agreements including monthly retainers for ongoing support, dedicated support teams for enterprise clients, SLAs guaranteeing response times, and feature development for continuous improvement. Many clients engage us as long-term technology partners, and we provide the reliable, responsive support American businesses expect from their software vendors.
Key Features
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