The Role
Join a small team to migrate a proprietary ERP from legacy (.NET Framework 4.7, AngularJS) to modern stack (.NET 9, React 19). Build new features, maintain legacy code, implement MsSQL-backed functionality, integrate via RESTful APIs with major ERPs (Rivile, MS Dynamics, SAP, BSS), and deploy/operate on Azure. Collaborate closely with product and business stakeholders in an on-site Vilnius team.
Summary Generated by Built In
Are you ready to lead an ERP system’s transformation from "Classic" to "Cutting-Edge"?
Our client develops and scales their own proprietary ERP system, helping businesses streamline complex operations. They are currently at a major technological pivot point: migrating our core from reliable legacy systems to the latest tech stack available (.NET 9 and React 19). They are looking for our 4th core team member to help drive this evolution!
Tech Stack:
Backend: Experience with .NET Framework 4.7 (maintenance) and the skills to build new features on .NET 9.
Frontend: Strong proficiency in React (we are moving to version 19!). Knowledge of Angular.js (1.7) is a massive plus—you’ll be instrumental in migrating our legacy frontend to React.
Database: Proficiency with MsSQL.
Integrations: Working with RESTful APIs and connecting our system with major ERP/Accounting players like Rivile, MsDynamics, SAP, BSS, etc.
Cloud: Everything is hosted on Azure.
Who Are We Looking For?
A Mid-level developer or a strong Junior with solid hands-on experience.
Someone who doesn't just "write code" but enjoys understanding business logic and product development.
A team player who thrives in a small, tight-knit group (currently 3 full-time devs + 1 part-time).
Location: Ability to work from our office in Pilaitė (Vilnius).
What’s In It For You?
Salary: €2,000 – €2,500 Net (after tax), depending on experience. For a Senior profile with exceptional expertise, we are open to discussing up to €3,000 Net.
Product-Focused: Forget the agency grind. Work on a single, long-term product where you see the direct impact of your work.
Hybrid Flexibility: We’ll start with a period of frequent office-based collaboration to get you up to speed, moving to a flexible model (e.g., once a week in the office) later.
Perks & Culture: * Annual team retreat/vacation abroad.
Opportunities for business trips and international exhibitions.
Stress-free parking at our office on Pilaitės pr. (plenty of spots!).
Location: Pilaitės pr., Vilnius.
Why this role is unique:
You won't just be maintaining a system; you will be part of a tech migration task force. This is a rare opportunity to bridge the gap between enterprise-grade legacy stability and the absolute latest versions of .NET and React.
Skills Required
- Experience maintaining applications on .NET Framework 4.7 and building new features on .NET 9
- Strong proficiency in React (migrating to React 19)
- Knowledge of Angular.js (1.7) for legacy frontend migration
- Proficiency with MsSQL
- Experience working with RESTful APIs and ERP/Accounting integrations (Rivile, MS Dynamics, SAP, BSS)
- Experience with Azure hosting and cloud deployments
- Ability to work from the office in Pilaitė (Vilnius)
- Mid-level development experience (or strong junior with hands-on experience) and product-focused mindset
Am I A Good Fit?
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The Company
What We Do
Wise-integration is a French fabless company founded in 2020, specializing in advancing power electronics through innovative Gallium Nitride (GaN) technology and digital control solutions. The company develops GaN-integrated circuits to miniaturize power supplies and improve energy efficiency, targeting a broad spectrum of markets including consumer electronics, e-mobility, industrial applications, data centers, and automotive sectors.
