SISG
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Services

What we build

Eight service lines

Full-spectrum software engineering for organisations that need systems built to last. From first architecture decisions through to production operations and long-term support.

In short

What software services does SISG offer?

SISG provides eight service lines: enterprise software development, web and mobile applications, API architecture and system integration, cloud infrastructure and platform engineering, cybersecurity and compliance, data engineering, technical consulting, and quality assurance testing. Projects run from discovery and architecture through development to deployment, with support after launch on agreed terms.

  • Core

    Enterprise Software Development

    Full-lifecycle engineering for complex systems

    We build mission-critical business systems from requirements analysis through production deployment. Specialising in logistics, e-commerce, healthcare, and enterprise platforms. Every project includes automated testing, security review, and comprehensive documentation.

    • Business automation
    • ERP & CRM
    • Data pipelines
    • Legacy modernisation
    • Multi-tenant SaaS
    • Real-time systems

  • Full-Stack

    Web & Mobile Application Development

    Production-grade apps with modern frameworks

    Fast, accessible, SEO-optimised web applications and progressive web apps. From marketing websites to complex customer portals, e-commerce platforms, and internal dashboards. We deliver responsive, performant products that work across all devices.

    • React
    • Next.js
    • Vue
    • Node.js
    • .NET
    • PWA
    • E-commerce
    • CMS

  • Integration

    API Architecture & System Integration

    Connecting systems at scale

    Well-documented, versioned APIs that handle production workloads with proper authentication, rate limiting, and monitoring. E-commerce integrations, CRM connectors, shipping APIs, and event-driven architectures.

    • REST & GraphQL
    • Shopify API
    • CRM Integration
    • Webhooks
    • Event-driven
    • API gateway

  • DevOps

    Cloud Infrastructure & Platform Engineering

    Scalable, resilient cloud architecture

    Cloud infrastructure designed for reliability and cost efficiency. Infrastructure-as-code, automated deployments, container orchestration, and production monitoring across AWS, Azure, and Cloudflare.

    • AWS
    • Azure
    • Kubernetes
    • Docker
    • Terraform
    • CI/CD
    • Monitoring

  • Security

    Cybersecurity & Regulatory Compliance

    Protection that meets regulatory standards

    From code-level auditing to organisational compliance. GDPR, ISO 27001, and sector-specific requirements implemented with practical, maintainable security measures.

    • Penetration testing
    • GDPR
    • ISO 27001
    • OWASP
    • Secure SDLC
    • Incident response

  • Data

    Data Engineering & Business Intelligence

    Turning data into decisions

    ETL pipelines, data warehouses, and real-time analytics dashboards that help organisations make data-driven decisions. Database design, migration, and optimisation for production workloads.

    • ETL pipelines
    • Data warehousing
    • PostgreSQL
    • Elasticsearch
    • Analytics
    • Reporting

  • Advisory

    Technical Consulting & Architecture Review

    Strategic technology guidance

    Architecture reviews, technology strategy, vendor evaluation, and digital transformation planning. Technical due diligence for M&A. Practical advice from engineers, not consultants.

    • Architecture review
    • Tech strategy
    • Due diligence
    • Vendor assessment
    • Roadmapping

  • QA

    Quality Assurance & Software Testing

    Automated and manual testing at scale

    Test automation frameworks, performance benchmarking, security testing, and accessibility compliance. We implement continuous quality monitoring so defects are caught before they reach production.

    • Test automation
    • Playwright
    • Performance
    • WCAG
    • OWASP
    • Regression

FAQ

Frequently asked questions

Which technologies does SISG work with?

The most-used stack includes React, Next.js, TypeScript and Tailwind CSS on the frontend; Node.js, .NET, Python, PostgreSQL and Redis with REST and GraphQL on the backend; and AWS, Azure, Cloudflare, Docker, Terraform and GitHub Actions for cloud and delivery. The tools are chosen for each project rather than by trend.

Does SISG build APIs and system integrations?

Yes. The API architecture and system integration service covers REST and GraphQL APIs, Shopify and CRM integrations, shipping APIs, webhooks, event-driven architectures and API gateways, built with authentication, rate limiting, versioning, documentation and monitoring.

Can SISG modernise an existing legacy system?

Yes. Legacy modernisation is part of the enterprise software development service, alongside ERP and CRM systems, business automation, data pipelines, multi-tenant SaaS and real-time systems. Every project includes automated testing, security review and documentation.

Does SISG help with GDPR and security requirements?

Yes. The cybersecurity and regulatory compliance service covers penetration testing, OWASP practices, a secure software development lifecycle, incident response, and implementing GDPR, ISO 27001 and sector-specific requirements as practical, maintainable security measures.

Have a project in mind?

Get in touch for an honest assessment and a clear proposal.

Start a conversationinfo@sisg.eu