SR Backend Developer Java, Language Tooling (Xtext/EMF)

At Zallpy, technology is created by curious, collaborative people who care about doing things well. If you enjoy environments where there is room to ask questions, test ideas, learn, and grow together, this opportunity is for you! 💚 

We are looking for someone to join a team that thinks big, works with attention to detail, values partnership in everyday work, and shares responsibility. We believe in autonomy, the exchange of different experiences, and building solutions together. 

Here, growing means sharing knowledge, respecting different ways of thinking, and building relationships based on trust while delivering high-quality technology. 

If this way of working resonates with you, come join us. 

What you will do: 

• Design and evolve the grammar, metamodel, and semantics of a domain-specific language using Xtext and EMF.
• Build parsers, validators, scoping and linking rules, and code generators.
• Implement and maintain Language Server Protocol (LSP) features: completion, diagnostics, navigation, hover, and refactoring.
• Develop on top of the Eclipse Platform and its plugin architecture.
• Write modern Java (JDK 25) with Maven-based builds, automated tests, and continuous integration.
• Work with the web and IDE teams so the language works smoothly in VS Code and in the browser.
• Take part in technical decisions, code reviews, and the long-term architecture of the language tooling.

What we are looking for: 

• Solid, senior-level experience with Java, ideally with recent JDK versions.
• Experience with Maven.
• Proven experience building at least one of the following: a DSL, a parser, a compiler or transpiler, a code generator, or an IDE plugin.
• Advanced English for daily communication with an international client.

Nice to have: 

• Hands-on experience with Xtext and EMF.
• Experience with the Eclipse Platform: plugins, OSGi, or Eclipse RCP.
• Knowledge of the Language Server Protocol, ideally having implemented language features with it.
• Experience with Franca IDL or other interface definition languages (e.g., Protobuf, gRPC, OpenAPI, AIDL).
• Gradle.
• Go.
• Ecore, Sirius, Acceleo, or model-driven engineering (MDE).
• Work with ASTs, type systems, or static analysis.
• A personal or open-source language, compiler, or IDE plugin project.
• Automotive domain knowledge (e.g., SOME/IP, CommonAPI, vsomeip, AUTOSAR).

Where you will work:

• This is a 100% remote position.

Hiring models:

• CLT.
• Cooperative.

Benefits of being a Zallper:

🍽 Meal/Food Allowance 
Caju multi-benefit card (credit format), offering flexibility for everyday needs. (CLT only) * 

🏥 Health Plan – Unimed 
No waiting period or copayment for the holder. Possibility to include dependents (children, spouse, or stepchildren) with copayment. (CLT only) * 

🦷 Dental Plan – Uniodonto 
Affordable options to include dependents. (CLT only) * 

💪 Wellhub 
Access to gyms, physical activities, and wellness programs. 

🧘 Zenklub 
For CLT: Two free sessions per month and special rates for additional sessions. 
For Cooperative/Contractor: Special rates for sessions. 

🛡 Life Insurance 
More security for you and your family. (CLT only) * 

👶 Childcare Allowance 
Financial support for Zallpers with children from 4 months to 6 years old, according to internal policy. (CLT only) * 

🎁 Baby Zallpy 
A special gift to celebrate the arrival of new Zallpy babies. 

👥 Business Partner Support 
Close and human-centered support from our People & Culture team throughout your journey at Zallpy. 

🌍 Volunteer Internal Communities 
Diversity, Sports & Movement, and Technology. 

🎓 Educational Partnerships 
Discounts on undergraduate and graduate programs, professional courses, and language schools. 

✈️ Experiences & Development 
Participation in events, workshops, trips, and team-building activities. 

💼 Referral Program 
Refer talents to Zallpy and receive bonuses from R$2,500 to R$5,000. 

* Contractor / PJ: For these hiring models, the benefits above apply except for those marked with an asterisk (*), which are exclusive to CLT. In addition, we offer dedicated platforms to manage contractors, ensuring organization, transparency, and a structured experience throughout the entire journey. 😉 

Job ID: 0dff79