Coding Expert - Java
Alignerr · United States
- Hybrid
- Contract
- $75,000 / year
- United States
Tailored resume — keyword-matched to this role.
Hiring manager — we find who's hiring.
Intro email — drafted to reach them directly.
Job highlights
- Review and evaluate AI-generated Java code.
- Write high-quality Java solutions.
- Explain code logic and strategies clearly.
- Work remotely with flexible hours.
- Improve AI models for top companies.
About the role
Java Coding Expert (Contract)
Labelbox is seeking a Coding Expert in Java for a contract engagement. This role is fully remote, with a preference for candidates within the United States. You will be instrumental in shaping the data that powers frontier AI.
Quick Facts
- Engagement: Hourly, at-will contractor
- Schedule: Fully remote & asynchronous (min. 15 hrs/week)
- Pay Range (US): $25 – $100 per hour
- Start Date: Rolling — staffed as projects launch
What You Will Do
- Review and evaluate AI-generated Java code for correctness, efficiency, and clarity.
- Write high-quality Java solutions to coding problems across varying difficulty levels.
- Create clear, human-readable explanations for code logic and problem-solving strategies.
You Are a Great Fit If
- Fluent in English, with strong written communication skills and the ability to clearly explain abstract coding concepts.
- Expertise in Java: Deep familiarity with core Java concepts such as OOP, multithreading, exception handling, and standard libraries.
- 3-5 years of experience with Java frameworks, tools, or domains (e.g., Spring, Android, backend development) is a plus.
- Bachelor’s degree (or pursuing one) in Computer Science or a related field. Master’s or PhD preferred, but not required.
- Bonus: Experience with data labeling, RLHF, or other AI training projects.
About the Role
- Flexible workload — work from anywhere, on your own schedule.
- High impact — your craft directly improves models used by top AI labs & Fortune 500 teams.
- Clear ownership — know exactly what success looks like and have autonomy to deliver.
- Growth potential — consistent high performers spearhead new programs and mentor incoming SMEs.
Interview Process
- Complete a screening with Zara, our AI interviewer in English, to learn more about your background and experience.
- Domain-specific Zara interview to assess your Java expertise, including performance optimization (garbage collection, JIT compilation), software design and architecture, and advanced features such as generics, streams, functional programming, concurrency, and the module system.
About Labelbox
Labelbox builds the data engine that accelerates breakthrough AI. Our platform, expert services, and marketplace let teams iterate on data as nimbly as they iterate on code, enabling safer, smarter models in production. We’re backed by SoftBank, Andreessen Horowitz, B Capital, Gradient Ventures, Databricks Ventures, and Kleiner Perkins, and trusted by leading research labs and enterprises worldwide.
Ready to Apply?
Click “Apply” above, and take one or more domain specific assessments. We review candidates on a rolling basis and will contact you if your background matches an active project.
Key skills/competency
- Java
- Object-Oriented Programming (OOP)
- Multithreading
- Exception Handling
- Java Frameworks
- AI Code Review
- Data Labeling
- RLHF
- Backend Development
- Problem Solving
Skills & topics
- Java
- Coding Expert
- AI
- Remote
- Contract
- Software Development
- Object-Oriented Programming
- Multithreading
- Backend Development
- AI Code Review
How to get hired
- Tailor your resume: Highlight Java expertise, OOP, multithreading, and any framework experience (Spring, Android, backend).
- Prepare for AI screening: Be ready to discuss your Java background and experience with abstract coding concepts.
- Ace the Java technical interview: Study performance optimization, software design, and advanced Java features like generics and concurrency.
- Showcase AI/ML familiarity: If you have experience with data labeling or RLHF, emphasize it to align with AI training projects.
- Apply early: Candidates are reviewed on a rolling basis; submit your application and assessments promptly.
Technical preparation
Master core Java: OOP, multithreading, exceptions.,Review Java frameworks like Spring.,Understand AI code evaluation criteria.,Practice explaining complex code logic.
Behavioral questions
Describe a complex Java problem you solved.,How do you ensure code clarity and efficiency?,Explain your approach to abstract coding concepts.,How do you manage a flexible, remote workload?
Frequently asked questions
- What is the pay rate for a Java Coding Expert at Labelbox?
- The pay range for a Java Coding Expert at Labelbox is $25 – $100 per hour, depending on experience and project requirements.
- Is this a remote position for the Java Coding Expert role?
- Yes, this is a fully remote position. While candidates within the United States are preferred, the role allows for asynchronous work from anywhere.
- What are the minimum hours required for the Java Coding Expert role?
- You are expected to work a minimum of 15 hours per week for this contract engagement.
- What specific Java skills are most important for this role?
- Deep familiarity with core Java concepts like OOP, multithreading, and exception handling is crucial. Experience with Java frameworks such as Spring or for backend development is a plus.
- How does the interview process work for the Java Coding Expert position?
- The interview process includes an initial screening with an AI interviewer named Zara, followed by a domain-specific interview to assess your Java expertise, including performance optimization and advanced features.
- Does Labelbox require a specific degree for the Java Coding Expert role?
- A Bachelor’s degree in Computer Science or a related field is preferred, but not strictly required. A Master’s or PhD is a bonus. Focus is on demonstrated expertise.
- What is RLHF and is it relevant for this Java Coding Expert role?
- RLHF stands for Reinforcement Learning from Human Feedback. Experience with RLHF or other AI training projects is considered a bonus for this role, indicating familiarity with AI development processes.
- How are candidates selected for projects as a Java Coding Expert?
- Labelbox reviews candidates on a rolling basis. If your background matches an active project after you apply and complete assessments, you will be contacted.