VB6 | Visual Basic Developer

Empowered by our motto, "Making Data Matter", Keyrus stands at the forefront of global consultancy in Data & Analytics, AI & Machine Learning, and Digital Transformation. With a presence in 27 countries across 4 continents, we're on a mission to elevate the impact of data.

We are data experts, guiding our clients through their data journey regardless of their level of maturity in analytics. As an end-to-end partner, we address varied challenges that our clients face, from Advanced Analytics, Cloud, Data Governance, Visualisation to Enterprise Performance Management, from advisory to delivery.

With more than 3200 employees in all corners of the world, Keyrus is dedicated to helping businesses taking advantage of the Data and Digital paradigm to enhance their performance, facilitating, and accelerating their transformation, and generating new drivers of growth, competitiveness, and sustainability.

Job Summary

Keyrus is launching a high-impact modernisation initiative to migrate a critical application from Visual Basic 6 (VB6) to C#/.NET as part of the AI program. We are looking for a VB6 Developer to help analyse, maintain, and document the legacy system in preparation for its migration. Experience or familiarity with C# and modern .NET architectures is a major advantage, as it supports collaboration with the team leading the rebuild.

This position is remote, but you must be based in Portugal.

Note: All applications/CV’s must be submitted in English.

Key Responsibilities

• Analyse and understand legacy VB6 codebase and its functional dependencies.
• Document logic, workflows, and technical specifications of existing VB6 modules.
• Collaborate with C#/.NET developers to ensure accurate translation and migration of legacy functionalities.
• Identify opportunities to simplify or modernise during the transition phase.
• Contribute to planning and technical discussions around the migration roadmap.
• Support testing and validation efforts by ensuring legacy behaviour is matched post-migration.
• Assist with bug fixing or enhancements in the VB6 codebase during the interim period.

Requirements for the role

• 5+ years of professional experience in Visual Basic 6 development.
• Strong understanding of legacy application architecture, database access layers (e.g., ADO), and VB6 GUI forms.
• Experience in analysing and documenting monolithic legacy applications.
• Ability to work independently and collaborate with cross-functional teams remotely.
• Excellent problem-solving and reverse engineering skills.
• Hands-on experience with C#/.NET (Framework or Core) is a big plus.
• Good to have participated in previous legacy-to-modern migration projects.
• Familiarity with Git, Azure DevOps, and/or modern CI/CD tools.
• Understanding of object-oriented programming principles and software design patterns is good to have.
• Fluent in English
• Must be a Portuguese or European citizen or have a work permit for Portugal

What we offer at Keyrus Portugal:

• Competitive salary based on your skills & experience and according to the Data market practice
• Meal allowance of €8.32 per day
• Flexible benefits option
• Private Medical Insurance
• 22 days of annual leave (increasing every 3 years up to a maximum of 25 days)
• Training Program through KLX (Keyrus Learning Experience) Platform

Why Keyrus?

Joining Keyrus means joining a market leader in the Data Intelligence field and an (inter)national player in Management Consultancy and Digital Experience.

Keyrus Portugal operates on five guiding pillars that shape our approach to work and collaboration – Diversity; Trust; Flexibility; Ownership & Innovation - we're dedicated to cultivating a team as diverse as the challenges we take on.

We embrace and celebrate the rich variety of backgrounds, perspectives, and talents that each individual brings. We firmly believe that diversity fuels innovation, ignites creativity, and propels us towards greatness.

Regardless of race, ethnicity, gender, sexual orientation, disability, age, or any other dimension of diversity, everyone is not only welcome but valued here.

Join us in shaping a future where everyone can thrive!