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Backend Software Engineer Intern Jobs in Union, NJ

Fin

Senior Backend Software Engineer

New York, NY · On-site +1

$125K - $250K/yr

About the role We are looking for a Senior Backend Engineer to own the core systems that make this work. You will design and build the services that move real money, integrate with payment partners ...

Fin

Senior Backend Software Engineer

New York, NY · On-site

$125K - $250K/yr

About the role We are looking for a Senior Backend Engineer to own the core systems that make this work. You will design and build the services that move real money, integrate with payment partners ...

Fin

Senior Backend Software Engineer

New York, NY · Remote

$125K - $250K/yr

About the role We are looking for a Senior Backend Engineer to own the core systems that make this work. You will design and build the services that move real money, integrate with payment partners ...

Alpaca Health

Senior Backend Software Engineer

New York, NY · On-site

$200K - $250K/yr

Senior Backend Software Engineer We're a tiny engineering team building something large. You'd be the person who owns the platform foundation -- the data models, the money logic, the state machines ...

Tennr

Senior Backend Software Engineer

Manhattan, NY · On-site

$140 - $190/hr

Role Description We're seeking a Senior Backend Engineer with a passion for systems architecture, data modeling, and large-scale workflow orchestration . In this role, you'll architect and implement ...

2Bridge Partners

Software Engineer

New York, NY · On-site +1

Seeking a Senior Backend Software Engineer with experience in design, development, and support of cloud and microservice-based, event-driven financial systems. The candidate should have a robust ...

2Bridge Partners

Software Engineer

New York, NY · On-site +1

$100K - $150K/yr

Seeking a Senior Backend Software Engineer with experience in design, development, and support of cloud and microservice-based, event-driven financial systems. The candidate should have a robust ...

Bask Health

Senior Back-End Software Engineer

New York, NY · On-site

$134K - $176K/yr

As a Senior Back-End engineer at Bask you will work directly with the CEO and CTO to build and design the software infrastructure that will serve as the backbone of telehealth. Our serverless ...

N1

Software Engineer (Backend Rust)

New York, NY · On-site +1

$120K - $260K/yr

As a key member of the software engineering team, you will spearhead the development of the core backend components for our blockchain network, focusing on networking, reliability, and scalability.

Tennr

Senior Backend Software Engineer

New York, NY · On-site

$190K - $215K/yr

Role Description We're seeking a Senior Backend Engineer with a passion for systems architecture, data modeling, and large-scale workflow orchestration . In this role, you'll architect and implement ...

Castle Pay, Inc

Backend Software Engineer

New York, NY · On-site

$98K - $145K/yr

In this role you'll be a foundational and versatile member of our engineering team, focused on building a simpler, smarter, and more intuitive experience for homeowners. You'll collaborate closely ...

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Showing results 21-40

All JobsBackend Software Engineer Intern JobsBackend Software Engineer Intern Jobs in Union, NJ

Backend Software Engineer Intern information

See Union, NJ salary details

$61.7K

$150.5K

$202.8K

How much do backend software engineer intern jobs pay per year?

As of Aug 10, 2026, the average yearly pay for backend software engineer intern in Union, NJ is $150,472.00, according to ZipRecruiter salary data. Most workers in this role earn between $126,400.00 and $175,300.00 per year, depending on experience, location, and employer.

What is the difference between Backend Software Engineer Intern vs Backend Software Engineer?

AspectBackend Software Engineer InternBackend Software Engineer
QualificationsTypically pursuing or recently completed a degree in CS or related fieldBachelor's or higher in CS or related field, with relevant experience
Work EnvironmentInternship programs, learning-focused, supervisedFull-time professional role, responsible for developing and maintaining backend systems
ResponsibilitiesAssist in coding, testing, and debugging under supervisionDesign, implement, and optimize backend services independently
Usage in IndustryEntry-level position for students or recent gradsCore role in software development teams

The main difference between a Backend Software Engineer Intern and a Backend Software Engineer lies in experience, responsibilities, and employment status. Interns are typically students gaining practical experience, while Backend Software Engineers are full-time professionals responsible for core backend development tasks.

What does a backend software engineer intern do?

A Backend Software Engineer Intern assists in developing and maintaining the server-side logic, databases, and APIs that power web and mobile applications. They work closely with senior engineers to write efficient code, troubleshoot issues, and ensure smooth data flow between users and servers. Interns may also participate in code reviews, testing, and documentation to support the overall software development process. This role provides hands-on experience with backend frameworks, database management, and industry best practices.

What skills and qualifications are needed to thrive as a backend software engineer intern?

To thrive as a Backend Software Engineer Intern, you typically need a solid understanding of programming languages like Java, Python, or Node.js, along with knowledge of data structures, algorithms, and database fundamentals. Familiarity with version control systems (like Git), RESTful APIs, and cloud platforms such as AWS or Azure is often required. Strong problem-solving skills, attention to detail, and effective communication help interns stand out in team settings. These competencies are crucial for building reliable backend services, collaborating efficiently, and contributing meaningful code in a fast-paced development environment.

What types of projects and responsibilities can I expect as a backend software engineer intern?

As a Backend Software Engineer Intern, you'll typically work on tasks such as designing and implementing APIs, optimizing database queries, and supporting the integration of backend services. Interns often collaborate closely with senior engineers, participate in code reviews, and contribute to team meetings and sprint planning. While you'll be given guidance and mentorship, you'll also be encouraged to take ownership of smaller features or bug fixes within larger projects, providing valuable hands-on experience with scalable systems. This role offers insight into how backend systems are architected and maintained in a real-world environment.
What job categories do people searching Backend Software Engineer Intern jobs in Union, NJ look for? The top searched job categories for Backend Software Engineer Intern jobs in Union, NJ are:
What cities near Union, NJ are hiring for Backend Software Engineer Intern jobs? Cities near Union, NJ with the most Backend Software Engineer Intern job openings:
Backend Software Engineer Intern jobs near you
Infographic showing various Backend Software Engineer Intern job openings in Union, NJ as of August 2026, with employment types broken down into 1% Internship, 86% Full Time, 9% Part Time, and 4% Contract. Highlights an 88% Physical, 4% Hybrid, and 8% Remote job distribution, with an average salary of $150,472 per year, or $72.3 per hour.

Senior Backend Software Engineer

Fin

New York, NY • On-site, Remote

$125K - $250K/yr

Full-time

Re-posted 26 days ago

Job description

About Fin
Fin is a next-generation payments platform built for high-value, global, and instant transactions. We are a Series A-stage company backed by Sequoia, Circle, and other notable investors. Powered by stablecoins, Fin enables users and businesses to move millions of dollars in seconds - whether to other Fin users, directly into bank accounts, or across crypto rails. By combining the speed of crypto with the reliability and trust of traditional finance, Fin reimagines how money moves worldwide. If banks and payment products were reinvented today, they would look like Fin.
About the role
We are looking for a Senior Backend Engineer to own the core systems that make this work. You will design and build the services that move real money, integrate with payment partners and banks, and ensure the platform is secure, observable, and ready to scale to millions of transactions.
You will work closely with the CEO, CTO, and a small senior team, making foundational architectural decisions and shipping production systems quickly. This role is a fit if you enjoy wresting simplicity out of complex problems and care deeply about reliability and correctness in financial systems.
We value your time: our process focuses on practical system design and architectural discussions, not LeetCode grinding or unpaid take-home assignments.
What you will do
  • Design, build, and maintain core backend services that power global payments and account experiences.
  • Own key systems end to end, from data models and APIs to deployment and ongoing operations.
  • Integrate with payment processors, on and off ramps, banks, and compliance and identity providers.
  • Monitor, tune, and scale backend services while maintaining high availability and strong performance.
  • Define and champion backend engineering best practices, coding standards, and architectural patterns.
  • Build internal tools and automation that improve developer productivity and system reliability.
  • Set and guide technical direction for backend architecture with a clear view of business impact and scalability.
  • Review code, share knowledge, and help raise the bar for the rest of the engineering team.
  • Own our cloud infrastructure setup and deployment workflows in partnership with the rest of the team.
What you need to be successful
  • Deep experience with TypeScript and Node.js. We are mostly a TS shop with some pockets of Rust.
  • Strong experience designing and building scalable distributed backend systems.
  • Track record of owning critical backend infrastructure and making impactful architectural decisions.
  • Deep familiarity with cloud infrastructure, containerization, and infrastructure as code.
  • Experience building highly available systems with robust monitoring, logging, and alerting.
  • History of creating clean, well documented APIs and integrating complex external systems.
  • Ability to collaborate in a small, fast moving team while mentoring others.
  • Clear communication skills and comfort working with both technical and non technical partners.
Bonus points
  • Experience at early stage startups where you owned large parts of the backend.
  • Hands on experience with our stack or similar: Node.js and Typescript, AWS, Terraform, Kubernetes, Temporal (https://temporal.io) .
  • Background leading technical strategy for a growing product or platform.
  • Experience in payments, fintech, or cryptocurrency, especially working with stablecoins or settlement systems.

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