Digital Solutions Development

Build secure, scalable and integration-ready digital platforms

Sunesis designs and builds complete digital solutions — from backend systems and integrations to web, mobile and customer-facing applications — for organizations that need secure, scalable and business-critical software, combining senior engineering teams, enterprise architecture, API-first development and production delivery experience.

Our digital solutions are designed not only for today's applications but for tomorrow's AI-enabled enterprise — where services, APIs, workflows and business capabilities can be safely used by users, partners, systems and AI agents.

Built for banking, insurance, energy, public sector, manufacturing, premium brands and enterprise service environments.

1 Ibm
2 Nlb
3 Akrapovic
4 Petrol
5 Sava
6 Otp
7 Flare
8 Generali
9 Oracle
9 Snaga
Cybergrid
Ebcont
Energetika Ljubljana
Gen I
Giz
Ministry Justice
Ministry Public Admin
Riko
1 Ibm
2 Nlb
3 Akrapovic
4 Petrol
5 Sava
6 Otp
7 Flare
8 Generali
9 Oracle
9 Snaga
Cybergrid
Ebcont
Energetika Ljubljana
Gen I
Giz
Ministry Justice
Ministry Public Admin
Riko

From business idea to production-ready digital solution

Modern digital products no longer exist in isolation. They connect to core systems, expose APIs, integrate data, support multiple channels, enforce security and scale under real business load.

Increasingly, they must also support AI assistants, AI agents, workflow automation, partner ecosystems and reusable business capabilities — without compromising security or control.

Sunesis delivers complete digital solutions across the full stack, from architecture and backend to web, mobile, APIs, integrations and workflows, end to end.

Sunesis builds enterprise digital solutions that connect applications, APIs, workflows, data, business systems and AI-ready services into production-ready platforms.

What we build

We develop digital solutions for organizations where reliability, security, integration capability and long-term maintainability matter.

Enterprise backend systems

Robust backend systems built in Java, .NET or Python with an API-first architecture and deep integration into enterprise environments.

Key capabilities

  • Java backend development
  • .NET backend development
  • Python backend development
  • API-first architecture
  • Integration with enterprise systems

Web applications and frontend development

Enterprise web applications and portals built with Angular and React, with responsive, API-driven user interfaces.

Key capabilities

  • Angular development
  • React development
  • Enterprise web applications
  • Customer, partner and employee portals
  • Responsive API-driven UIs

Native mobile applications

Secure native mobile applications for iOS and Android, integrated with backend APIs and enterprise systems.

Key capabilities

  • Native iOS development
  • Native Android development
  • Secure mobile architecture
  • Backend API integration
  • Push notifications

API-first digital platforms

Digital platforms designed around clean, well-governed APIs that serve applications, partners, systems and AI agents.

Key capabilities

  • API design
  • REST APIs
  • Event-driven APIs
  • API gateway integration
  • Agent-ready and tool-safe API design

Enterprise integrations

Reliable integrations that connect digital solutions with the surrounding enterprise landscape and external partners.

Integration areas

  • CRM, ERP and document systems
  • Banking and insurance platforms
  • Identity and access management
  • External and partner APIs
  • Legacy modernization layers

Event-driven architecture and Kafka

Event-driven solutions and asynchronous integration built on Kafka for scalable, decoupled communication.

Key capabilities

  • Event-driven architecture
  • Kafka-based integration
  • Event streaming
  • Asynchronous communication
  • Event observability

Workflow-enabled digital solutions

Digital solutions with embedded workflow orchestration using Temporal and Camunda for long-running and process-critical operations.

Key capabilities

  • Workflow integration
  • Long-running processes
  • Human approval steps
  • Business APIs as workflow capabilities
  • Workflow audit trails

AI-agent-ready digital services

Digital services prepared so AI agents can use approved capabilities safely, through controlled and auditable interfaces.

Key capabilities

  • Tool-safe APIs
  • MCP-oriented tool exposure
  • Controlled backend access
  • Integration with KumuluzAI and Kumuluz API
  • Auditability of agent actions

Built for business-critical environments

Security by design

Security, identity and access control built into the architecture from the start.

Scalability and performance

Solutions designed to scale and perform under real business load.

Maintainability

Clean, modular architectures built for long-term evolution and support.

Integration readiness

Designed to connect with surrounding enterprise systems and partners.

Operational reliability

Reliable, observable solutions ready for stable production operation.

API-first thinking

Capabilities exposed through clean, reusable and well-governed APIs.

Workflow awareness

Process boundaries and orchestration considered as part of the design.

User experience

Responsive, usable interfaces across web, mobile and customer channels.

Modernizing existing systems and digital channels

Many organizations do not need to replace their systems — they need to evolve them. Sunesis helps introduce APIs, modular architectures, new channels, integration layers, workflow boundaries and cloud-native foundations without disrupting business operations.

We also help prepare existing systems for the AI-enabled enterprise, exposing approved capabilities so they can be safely used by digital products, workflows and AI agents.

Modernization focus

Replatforming applicationsDecomposing monolithsIntroducing APIs and integration layersBuilding new digital channelsModernizing frontend and mobileImproving scalabilityAdding workflow orchestrationIntroducing event-driven architecturePreparing for cloud-native and DevOpsPreparing capabilities for AI-agent use

Preparing digital platforms for AI agents

Digital solutions are increasingly expected to support AI agents alongside users and systems. Sunesis designs platforms where agents access approved capabilities through controlled, governed and auditable interfaces.

Tool-safe APIs

APIs designed for safe, controlled use by AI agents and automation.

Business APIs

Reusable business capabilities exposed as governed agent-ready tools.

MCP-oriented tools

Capabilities exposed as MCP-oriented tools for controlled agent access.

Workflow execution

Deterministic workflow execution behind agent-initiated actions.

Gateway and policy control

Agent requests routed through gateways with authentication and policy enforcement.

Auditability

Traceable records of which capabilities agents used and when.

Accelerated by Kumuluz Digital Platform

Where appropriate, Sunesis uses the Kumuluz Digital Platform and its components to accelerate cloud-native, microservice, API-based and AI-agent-ready solutions with reusable foundations and proven building blocks.

On Sunesis projects Kumuluz is a practical accelerator, not a product add-on — it helps teams deliver faster while keeping solutions open, standard and maintainable.

Kumuluz Digital Platform

Foundation for cloud-native services, APIs, connectors, MCP-enabled tools and workflow integrations.

Kumuluz API

API management and gateway platform for exposing, securing and governing APIs.

Kumuluz Business APIs

Reusable business capabilities for digital products, workflows and AI agents.

KumuluzAI Platform

AgenticAI platform that uses approved services, APIs, tools and workflows.

Digital solutions across industries and use cases

Digital banking and financial services

Secure digital banking and financial applications across channels and systems.

Relevant capabilities: backendFrontendMobileAPIsIntegrationsSecurityWorkflow support

Insurance digital platforms

Enterprise insurance applications and platforms with strong integration and AI-readiness.

Relevant capabilities: enterprise applicationsAPIsIntegrationsWorkflow supportSecure dataAI-ready services

Public sector information systems

Information systems for public sector organizations with secure, auditable workflows.

Relevant capabilities: case-managementSecure workflowsIntegrationsDocument systemsAuditability

Energy and utilities platforms

Enterprise platforms and customer services for energy and utilities providers.

Relevant capabilities: enterprise platformsIntegrationsAPIsCustomer portalsData-driven services

Customer and partner portals

Web portals for customers and partners backed by APIs and identity management.

Relevant capabilities: web appsFrontendBackendAPIsIdentityWorkflow integration

Integration platforms and API ecosystems

API-first integration platforms and ecosystems connecting systems and partners.

Relevant capabilities: API-firstEvent streamingKafkaAPI governancePartner APIs

Workflow-enabled business applications

Business applications with orchestrated, auditable workflows and approvals.

Relevant capabilities: TemporalCamundaBusiness APIsApprovalsService tasksAudit trails

AI-enabled digital services

Digital services prepared for safe use by AI agents with human oversight.

Relevant capabilities: AI-agent-ready APIsKumuluzAI integrationBusiness APIsHuman approvalAuditability

Reference architecture for enterprise digital solutions

A production digital solution separates user channels, frontend, backend, APIs, business capabilities, workflows, integrations and AI-agent access into clear layers — a more secure, scalable and maintainable architecture than tightly coupled systems.

User channels

Web applications, mobile apps, portals and customer-facing digital channels.

Frontend and experience layer

Angular and React applications delivering responsive, API-driven experiences.

Backend and service layer

Java, .NET and Python services implementing business logic and operations.

API layer

REST and event-driven APIs exposing capabilities to applications and partners.

Business API layer

Reusable Business APIs that act as governed business capabilities.

Workflow layer

Temporal and Camunda orchestration for long-running and process-critical steps.

Integration layer

Connectors and integrations to enterprise systems, partners and external APIs.

AI-agent-ready layer

Tool-safe APIs and MCP-oriented tools for controlled access by AI agents.

Enterprise systems

CRM, ERP, core banking, insurance, document and case-management systems.

Operations layer

CI/CD, observability, monitoring and production operations across the platform.

How we deliver digital solutions

1

Understand the business and technology context

We work with stakeholders to understand goals, constraints, systems and the surrounding landscape.

2

Define the architecture

We define backend, frontend, mobile, API, integration and workflow architecture aligned with business needs.

3

Build iteratively

We develop the solution in focused iterations that deliver value and reduce delivery risk.

4

Integrate with enterprise systems

We connect the solution to enterprise systems, identity providers, data sources and partner APIs.

5

Prepare for production

We address security, scalability, observability and operational readiness for stable production.

6

Enable workflows and automation

We add workflow orchestration and automation for long-running and process-critical operations.

7

Prepare for AI-enabled use cases

We expose approved capabilities through tool-safe APIs so AI agents can use them safely.

8

Evolve and support

We support, maintain and evolve the solution as business needs and technology change.

Technology expertise

Backend

Java, .NET, Python, microservices and APIs.

Frontend

Angular, React, portals and dashboards.

Mobile

Native iOS and Android, secure architectures and push notifications.

APIs

REST, event-driven, API-first design and gateway integration.

Integrations

Kafka, event streaming, connectors and partner integrations.

Workflows

Temporal, Camunda, approvals and audit trails.

Architecture

Cloud-native, microservices, event-driven and AI-agent-ready architecture.

Security and identity

OAuth2, OIDC, Keycloak, Microsoft Entra ID and RBAC.

Delivery

CI/CD, DevOps, observability and production readiness.

Digital solutions in practice

Reference

NLB Klik

A digital banking solution delivering frontend and backend for a modern customer banking experience.

Reference

KYC — NLB

Digital KYC and integrations supporting compliance and customer onboarding in banking.

Reference

eSpis — Supreme Court

A digital case-management solution supporting judicial workflows in the public sector.

Reference

IKA — Supreme Court

An enterprise information system supporting court administration and operations.

Reference

Akrapovič Website

A high-performance website for a global premium brand with demanding quality expectations.

Reference

Akrapovič Business Portal

A business portal supporting partner, customer and internal workflows.

Reference

Energetika Moj utrip

A digital solution for customer engagement and energy services in the energy sector.

Reference

Inorma — Zavarovalniška skupina Sava

An enterprise integration platform connecting systems across an insurance group.

Why Sunesis for digital solutions development

1

Full-stack enterprise delivery

We deliver complete solutions across backend, frontend, mobile, APIs, integrations and workflows.

2

Strong integration expertise

We connect digital solutions reliably with complex enterprise systems and partner ecosystems.

3

Senior engineering teams

Experienced engineers who understand enterprise architecture, security and operational constraints.

4

API-first and platform-oriented thinking

We design reusable, well-governed APIs and platforms rather than isolated applications.

5

Cloud-native and DevOps awareness

We build cloud-native solutions with CI/CD, observability and production readiness in mind.

6

Workflow and automation readiness

We embed orchestration and automation for long-running and process-critical operations.

7

Prepared for AgenticAI

We design services and APIs that AI agents can use safely under governance and oversight.

8

Proven enterprise references

A track record across banking, insurance, energy, public sector and premium brands.

Need to build or modernize a business-critical digital solution?

Whether you are developing a new platform, modernizing existing systems or connecting enterprise applications, Sunesis brings the team, architecture, integrations and platform thinking to deliver it reliably.

We also help prepare your services for AI-enabled automation, so your digital solutions are ready for users, partners, systems and AI agents.