Secure software and cybersecurity services

At Helmes, security is part of the process from day one. With 30+ years of experience, we build digital solutions that are secure by design – ready to scale, evolve, and stand the test of time. Through close collaboration, continuous testing, and certified best practices, we ensure security is built in at every step.

Secure software development & cybersecurity solutions

Ian Nelis

Ian Nelis

Partner & Business Area Lead
ian.nelis@helmes.com
+372 5664 5072
Our clients say that with us, getting started with security services is clear and efficient. Contact me to discuss how we can strengthen your digital security, from first assessment to full protection.

Secure software

At Helmes, we build security into every phase of software development – from analysis to audit. Our embedded Security Leads, continuous testing, and proven practices ensure your digital solutions are secure by design, not by accident. With decades of experience and ISO27001-certified processes, we blend deep technical expertise with business relevance to prevent risks, ensure compliance, and enable long-term digital resilience.

Security by design

Risks, compliance, and protection needs integrated from the very first analysis and architecture stages.

Embedded security expertise

Dedicated Security Leads in every project team for real-time guidance and hands-on risk management.

Continuous testing & validation

Automated security and dependency scans; security code reviews built into the CI/CD process.

Developer-first security culture

In-house training programs, secure coding standards, and peer reviews raise the baseline across all teams.

Proven, certified processes

ISO27001-certified security practices refined over 30+ years of delivering critical business solutions.

Security services to assess your cybersecurity level

Our cybersecurity services offer independent, expert assessments that uncover vulnerabilities, validate critical protections, and guide continuous improvement.

Whether you need to meet compliance requirements, gain client trust, or harden your digital platforms, starting with a security assessment gives you clear, actionable priorities – not just theoretical risks.

Combining technical precision with business relevance, we bring an attacker’s perspective and a builder’s mindset.

Our cybersecurity services include: 

  • Penetration Testing – Identify security weaknesses  
  • Threat Modeling – Mapping risks and defining security priorities 
  • Code Security Reviews – Deep analysis of critical code for hidden vulnerabilities 
  • Red Team Assessments – Full-spectrum attack simulations to test detection and response 
  • Cloud Security Reviews – Ensuring secure configurations, access controls, and data protection 

Is your business ready for NIS2?

Helmes helps you assess your current security level, stay ahead of emerging threats, and strengthen your defences through hands-on services like penetration testing, threat modelling, and code security reviews – all designed to uncover risks, validate your existing setup, and build long-term security resilience.

Clients we helped become more secure

Strengthening OECD’s security posture

The OECD – an international organization of 38 member countries promoting policies for global economic and social well-being – engaged Helmes to assess a critical system managed by a U.S.-based third-party provider.

Helmes performed a full-scope security audit, including:

  • Penetration testing (black-box & grey-box)
  • Architecture analysis of networks, data flows & endpoints
  • Infrastructure & configuration review
  • ISO 27001 Annex A compliance evaluation
  • Targeted code review
  • Cryptographic & data protection audit
  • Stakeholder interviews & documentation analysis

Scaling Keyfactor’s enterprise-grade PKI

Keyfactor – a global leader in digital identity security – offers enterprise-grade PKI, certificate automation, and secure signing solutions.

Helmes contributed to the secure development of two core platforms:
– EJBCA Enterprise – a scalable PKI solution for certificate issuance, lifecycle management & integration with identity systems and HSMs
– SignServer Enterprise – a high-performance signing engine for document signing, time-stamping, and code signing

Engineering efforts included:

  • Development of new features
  • Optimization of performance under load
  • Integration with secure hardware
  • Compliance with eIDAS, FIPS, and Common Criteria

Thorough audit of a leading bank

A European financial institution offering digital banking services to private and business clients engaged Helmes to audit its mobile banking app for security, performance, and compliance.

Helmes conducted a multi-dimensional audit focused on:
– Security – identifying vulnerabilities and exposure risks (e.g. MITM threats)
– Performance – reviewing build quality, technical debt & stability
– UI/UX – assessing usability & accessibility compliance
– Strategic Fit – aligning findings with the client’s long-term roadmap

The audit provided a phased action plan with critical fixes, mid-term optimizations, and long-term modernization steps to strengthen digital trust and user experience.

The digital innovation partner for secure, business-critical software

We are a multifunctional digital innovation company with 30 years of experience in business-critical software development all over the world. Security is built into everything we do – from architecture to delivery – ensuring the resilience and compliance of the systems we build.

We help organizations with business development challenges by providing tailor-made professional services in tech strategy, software development, application, and data management. Our approach combines technical expertise with secure development practices, helping clients meet both operational and regulatory demands.

Our main value lies in the knowledge of how to build world-class product teams for outsourcing. These teams include embedded security expertise to ensure that every solution is protected by design.

What makes us stand out:

  • Our customer find our service exceptional.
  • A unique work method that enables 150% efficiency.
  • As an employer we attract and empower top IT professionals.
  • A trusted track record in delivering secure, business-critical software globally.
Our NPS
68
NPS
Improvement
150%
efficiency
Experience
30+
years
Portfolio
500+
customers
Offices
20
locations
People
1500+
experts

Working with Helmes is easy

Our clients say that with us, getting started with security services is clear and efficient – from initial assessment to implementation. But it’s better to experience it yourself. Let’s discuss how we can strengthen your digital security – from first assessment to full protection.