Weekend Software Engineer Jobs in Mahwah, NJ (NOW HIRING)

About Hauler Hero

Hauler Hero is a waste management SaaS platform transforming how haulers run their operations. Our platform powers route optimization, mobile operations, complex billing systems, and AI-driven automation — all built on modern cloud infrastructure serving customers processing millions in revenue.

The Role

We’re looking for a Software Engineer with 2–4 years of experience to join our growing engineering team.

You’ll work on real production systems, contribute to meaningful features across our stack, and build software that directly impacts our customers’ businesses. This is a hands-on role where you’ll write code daily, participate in code reviews, and take ownership of services and features.

We value engineers who ask good questions, learn quickly, and enjoy diving into complex problems.

AI-First Engineering - Building Software in 2026

At Hauler Hero, we're embracing AI-assisted development as a core part of how we build software. We believe AI tools are transforming engineering, and we're committed to helping our team master these tools early in their careers.

Our Philosophy:

Software engineering is evolving. The engineers who learn to work effectively with AI tools now will have a significant advantage as their careers progress. We're providing the training, tools, and mentorship to help you develop this skill alongside your technical fundamentals.

What This Looks Like for Software Engineers:

Daily Development:

• You'll use tools like Claude (Opus 4.5), Claude Code, Cursor, and GitHub Copilot as part of your regular workflow

• AI assists with writing code, generating tests, debugging issues, and understanding unfamiliar parts of the codebase

• You focus on learning system design, understanding business logic, and building quality software

• Senior engineers will mentor you on effective AI usage alongside technical skills

Learning & Growth:

• AI helps you understand new concepts, technologies, and patterns faster

• Use AI to generate boilerplate code while you focus on the logic and design decisions

• Learn to articulate your technical approach clearly (which helps both AI and human collaboration)

• Develop the critical thinking skills to evaluate and improve AI-generated solutions

Code Quality:

• AI assists in writing tests, suggesting improvements, and catching potential issues

• You learn to review code critically (whether written by AI or humans) and ensure it meets our standards

• Senior engineers help you understand when AI suggestions are good and when they need refinement

Problem-Solving:

• AI helps analyze error messages, suggest debugging approaches, and explain complex code

• You develop the judgment to know when AI guidance is helpful and when to ask senior engineers

• Learn to combine AI assistance with your own reasoning and the team's expertise

Human-AI Partnership in Your Role:

You focus on:

• Understanding the business requirements and user needs

• Learning system architecture and design patterns

• Writing clean, maintainable code (with AI assistance)

• Building your technical fundamentals and problem-solving skills

• Collaborating with the team and asking great questions

AI assists with:

• Code implementation and boilerplate reduction

• Test generation and documentation

• Understanding error messages and stack traces

• Suggesting approaches to technical problems

• Explaining unfamiliar code or concepts

You review:

• Everything AI produces to ensure it's correct and fits our codebase

• Your senior engineers will help you develop this critical thinking skill

Accelerated Learning:

AI tools can help you learn faster and ship more code, but they're not a replacement for understanding fundamentals. You'll work with experienced engineers who will help you develop both AI proficiency and core technical skills.

What We're Looking For:

We want engineers who are:

• Curious and eager to learn new tools and technologies, including AI-assisted development

• Critical thinkers who want to understand how things work, not just copy code

• Growth-minded about evolving their skills as software development changes

• Collaborative and willing to ask questions when they're unsure

• Quality-focused and understand that speed doesn't mean lower standards

We're not looking for:

• Engineers who want to copy AI-generated code without understanding it

• Those who are resistant to learning new tools and workflows

• Engineers who can't explain their technical reasoning or approach

• Those who see AI as doing the work for them rather than helping them learn and build better

What You’ll Do

• Develop backend services using Java and Spring Boot

• Build frontend features using React

• Write clean, well-tested code following established patterns

• Collaborate on feature design and implementation

• Work with PostgreSQL databases including spatial data (PostGIS) and multi-tenant architectures

• Debug production issues and improve system reliability

• Partner with Customer Success to investigate and resolve customer issues

• Build domain expertise in routing, billing, and waste management operations

• Contribute to documentation and knowledge sharing

• Participate in on-call rotation with team support

What We’re Looking ForRequired

• 2–4 years professional software engineering experience

• Strong fundamentals in at least one backend language (Java, Python, C#, Go, or similar)

• Experience with modern frontend frameworks (React, Vue, Angular, or similar)

• Experience with relational databases (PostgreSQL, MySQL, or similar)

• Understanding of REST APIs and web service architectures

• Solid grasp of data structures, algorithms, and object-oriented design

• Familiarity with Git and version control workflows

• Experience writing unit tests

• Strong communication and collaborative mindset

• Comfortable working in a startup environment where priorities shift

Nice to Have

• Java and Spring Boot experience

• React and TypeScript experience

• Cloud platforms (GCP, AWS, or Azure)

• Event-driven or messaging systems

• Docker and containerization

• Exposure to microservices architectures

• Domain experience in logistics, SaaS, or billing systems

Our Tech Stack

• Backend: Java, Kotlin, Spring Boot, PostgreSQL

• Cloud: Google Cloud Platform

• Caching: Redis, Firestore

• Frontend: React

• Mobile: Native Android

Why Join Hauler Hero

• Impact: Build software that directly runs real-world hauling operations

• Growth: Solve challenging technical problems and grow your engineering skills

• Team: Join a collaborative group that values quality and learning

• Ownership: Take responsibility for features from design to production

• Stability: Well-funded company with strong product-market fit and growing customers

Engineering Principles at Hauler Hero

• Ownership over tickets

• Practical over perfect

• Context over process

• Customer empathy

• Build for scale

Compensation & Benefits

• Competitive salary + equity

• Health, dental, vision insurance

• Flexible PTO

• Remote-first culture

• Modern development tools and AI assistants