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Intern Java Backend Developer Jobs in Palmdale, CA

Altruist

Staff Back End Engineer, Trading

Los Angeles, CA · On-site

$181K - $265K/yr

... Staff Back End Engineers to join our growing Trading team. This is a hybrid role, with an ... Java, Spring Boot, Microservices, AWS, Postgres, Kubernetes) * Ownership - The pride you put into ...

LAXIR

Developper Intern dot net and java script

Los Angeles, CA · On-site

$20.75 - $27.25/hr

Company Description Laxir is a digital marketing agency we are looking for an unpaid developer intern to manage some development assignment for some of our clients like: Start up Shamana www.shamana ...

Apex Informatics

SDET

Santa Clarita, CA · On-site

$50.75 - $65.50/hr

... back-end automation using tools such as Selenium, Appium, and REST Assured close * Object oriented programming experience in Java * Source Control (e.g. Git) * SQL

Hearst

Lead DevOps Engineer

Los Angeles, CA · On-site

$56.75 - $77.75/hr

... backend services (Java/Groovy/Spring Boot, .NET Core), frontend applications (React, Svelte), and data platforms (MarkLogic, SQL, Redis). This role manages and mentors DevOps Engineers who operate as ...

K2 Space

Ground Software Engineer

Los Angeles, CA · On-site

$123K - $150K/yr

Experience with Rust or another statically-typed backend programming language (Go, C++, Java, C#, TypeScript) * Experience with JavaScript/TypeScript and modern frontend development tooling (Vue ...

Jobsbridge

Full Stack Engineer

Los Angeles, CA · On-site

Be it core Java, full-stack Java, Web/UI designers, Big Data or Cloud or Mobility developers ... back end technologies. - Experience using front end JavaScript framework such as AngualrJS and ...

Apex Informatics

SDET

Santa Clarita, CA · On-site

$50.75 - $65.50/hr

... and back-end automation using tools such as Selenium, Appium, and REST Assured close * Object oriented programming experience in Java * Source Control (e.g. Git) * SQL Nice To Have * Ability to ...

Jobsbridge

Full Stack Engineer

Los Angeles, CA · On-site

Be it core Java, full-stack Java, Web/UI designers, Big Data or Cloud or Mobility developers ... back end technologies. - Experience using front end JavaScript framework such as AngualrJS and ...

Techworkers

JavaScript Engineer

Los Angeles, CA · On-site

... Java Microservices/BE services • Must have experience building BackEnd service to scale. • ... EC2, Lambda, API Gateway (to name a few) • Excellent knowledge of system engineering, load ...

K2 Space

Senior Ground Software Engineer

Los Angeles, CA · On-site

$150K - $200K/yr

Experience with Rust or another statically-typed backend programming language (Go, C++, Java, C#, TypeScript) * Experience with JavaScript/TypeScript and modern frontend development tooling (Vue ...

Jobsbridge

Lead Android Engineer

Los Angeles, CA · On-site

... backend teams. Be core part of the engineering team, be proud of your work - what you deliver has ... At least 5 Years industry experience using Java on Android, expert using MVC on Android with ...

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How much do intern java backend developer jobs pay per hour?

As of Jul 13, 2026, the average hourly pay for intern java backend developer in Palmdale, CA is $58.39, according to ZipRecruiter salary data. Most workers in this role earn between $51.92 and $67.31 per hour, depending on experience, location, and employer.

What kinds of projects and tasks can I expect as an Intern Java Backend Developer?

As an Intern Java Backend Developer, you’ll typically work on tasks such as writing and testing APIs, fixing bugs, and implementing core backend features under the guidance of senior developers. You may also participate in code reviews, collaborate with frontend and QA teams, and help with database management or performance optimization. These projects are designed to give you hands-on experience with Java frameworks, version control systems, and agile development practices, all while contributing to real-world applications.

What are the key skills and qualifications needed to thrive as an Intern Java Backend Developer, and why are they important?

To thrive as an Intern Java Backend Developer, you need a solid understanding of Java programming, object-oriented principles, and basic knowledge of backend frameworks like Spring, often supported by coursework or relevant projects. Familiarity with databases (such as MySQL), version control systems like Git, and build tools (e.g., Maven or Gradle) is typically expected. Strong problem-solving abilities, eagerness to learn, and effective communication skills help you collaborate and adapt in team environments. These skills and qualities are crucial for contributing to real projects, growing your technical expertise, and supporting overall team success.

What does an Intern Java Backend Developer do?

An Intern Java Backend Developer assists in building and maintaining the server-side logic of web applications using Java. They typically work under the guidance of senior developers, writing code, fixing bugs, and learning about frameworks like Spring or Hibernate. Their responsibilities often include database interaction, API development, and ensuring applications are scalable and efficient. Interns gain practical experience with industry-standard tools and workflows, helping prepare them for a full-time backend development role.
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Intern Java Backend Developer jobs near you
Senior Software Engineer - Back End

Senior Software Engineer - Back End

Tillster

Los Angeles, CA • On-site

$150K - $180K/yr

Full-time

Medical, Dental, Vision, Retirement, PTO

Posted 11 days ago

Job description

Role: Senior Software Engineer - Back End
Hybrid Role, MUST BE BASED IN SAN DIEGO, CA
About Tillster
Tillster, headquartered in the USA, is the global leader in digital ordering and customer engagement solutions. For over a decade we have developed revolutionary self-service, ordering and payments solutions - for mobile, tablet, online, kiosk, call center, and more - creating personalized interactions based on consumer preferences, language, and currency. Our platform is compatible with 15+ unique POS systems, representing over 90% coverage in multi-unit restaurants. We offer one platform; one scalable, enterprise class solution - to create world-class digital engagement solutions.
Our mission and passion are one in the same: Empower restaurants and consumers to engage and transact anywhere, anytime, and from any device - one consumer at a time, one order at a time, billions of times over. In doing so, together we are transforming e-commerce in restaurants and make the till grow for Tillster and our customers.
About the Role
We are looking for a Senior Engineer (bordering on Architect) to own and evolve the payment-terminal platform behind our kiosks: a layer of 40+ integrations spanning card-present terminals, semi-integrated and cloud processors, and cash automation. You will re-architect this into a modular, pluggable SDK so internal teams and external/third-party developers can build new integrations against a stable, versioned contract without forking the core, and you will stay hands-on, implementing new integrations down to the wire-level protocol.
What You'll Do (architecture and ownership)
  • Own the payments domain end to end on the kiosk platform: authorize, capture, void, refund, reversal, settlement (EOD), and reconciliation.
  • Re-architect the platform into a pluggable payment SDK: design the plugin contract and lifecycle (discovery/registration, versioning and backward compatibility, capability negotiation, dependency isolation, per-integration configuration and secrets) on top of the existing PayTerminal SPI.
  • Design a terminal abstraction that cleanly spans integrated vs. semi-integrated vs. cloud/REST processors and cash devices, so callers code to one model regardless of transport or vendor.
  • Build the integration test and certification harness (extending the current mock-terminal approach) so a new or external integration can be validated, simulated, and regression-tested before it touches real hardware.
  • Set platform-wide patterns for correctness in money movement: idempotency, transaction recovery and reversal, timeouts, heartbeat/health, concurrency, and reconciliation, in a system where double-charges and dropped captures are unacceptable.
  • Design for PCI-DSS scope minimization: tokenization, P2PE, per-processor TLS/mTLS and certificate/key handling, so cardholder data stays out of in-scope services. Partner with security/QSA on audits.
  • Drive architecture and design reviews, set technical direction for the integration layer, and mentor engineers building integrations.

What You'll Do (hands-on, low to high level)
  • Implement new terminal integrations end to end, from byte-level protocol (framing, TLV/BMP/APDU, BCD/LLVAR, checksums, ACK/NAK state machines) up to the high-level PayTerminal API.
  • Work directly with serial (RS-232 / USB-serial via jssc) and USB (usb4java) transports: port handling, event-driven reads, reconnection, and timing.
  • Integrate high-level and cloud processor APIs (REST/SOAP, webhooks, semi-integrated terminal SDKs) with robust retry, polling, and reconciliation.
  • Debug live hardware: protocol traces, terminal logs, packet captures, and vendor certification cycles.

About You (required)
  • 6+ years back-end engineering with strong Java (the platform is multi-module Maven/Java on Spring) and solid OOP and distributed-systems design.
  • Demonstrated experience designing extensible / plugin / SPI-based architectures (ServiceLoader, OSGi, Spring plugin models, or public SDKs consumed by other teams or third parties).
  • Hands-on low-level device and protocol experience: serial and/or USB communication and binary protocol implementation (TLV, BCD, bitmaps, length-prefixed fields, state machines). EMV, ISO 8583, ZVT, or OPI a strong plus.
  • Direct payment-terminal / POS integration experience (Verifone, Ingenico, Adyen, Shift4, FreedomPay, SIX, Nepting, SiTef, Redsys, Worldpay, or comparable), and a clear understanding of integrated vs. semi-integrated models.
  • Solid grasp of the card transaction lifecycle (auth, capture, void, refund, settlement, reversal) and PCI-DSS boundaries, tokenization, and TLS/mTLS in production.
  • Track record of technical leadership: leading designs, setting standards, and mentoring engineers.

Nice-to-haves
  • Cash automation and recyclers (Vynamic Cash or similar), end-of-day and reconciliation tooling.
  • Regional acquiring experience (LatAm, EU, Middle East) and multi-currency payments.
  • Loyalty, stored-value, gift, or wallet (Apple Pay / Google Pay) integration.
  • Vendor certification experience with acquirers and processors; 3-D Secure / SCA, fraud/risk tooling.

Thriving at Tillster
As a member of Tillster, you will embody our core values:
• Put Customers First:Prioritize the needs and satisfaction of our customers in all decisions and actions appropriate to Tillster's stage of development, resources, and stated goals.
• Collaborate: Work together effectively, leveraging diverse perspectives to achieve common goals.
• Innovate: Embrace creativity and pursue new ideas to drive progress and improvement.
• Operate from Data: Use strong critical thinking skills to make informed decisions based on accurate and relevant data.
• Drive Results: Focus on achieving tangible outcomes and delivering high performance.
• Own It: Take responsibility for your actions and the success of your work.
• Be Passionate and Have Fun: Bring enthusiasm to your work and enjoy the journey.
The Interview Process
  1. Recruiter interview with a Talent Acquisition Specialist
  2. Interview with Hiring Manager
  3. Technical Assessment
  4. Interview with our Kiosk-Payment Team
  5. Final Interview-Head of Kiosk

Pay and Benefits (USA)
  • Salary is $150,000 - $185,000 DOE
  • Health Benefits: All full-time, regular employees and their dependents are eligible for medical, dental, vision and FSA benefits. Additional health benefits include Healthcare and Dependent Care reimbursement programs, Employee Assistance Program ("EAP") and Optum Care 24-hour confidential medical counseling services.
  • Holidays: The company observes ten (10) paid holidays per calendar year.
  • Paid Time Off (PTO): Full-time, regular employees earn 15 days of PTO in the first 12-months of continuous service, and 22 days in subsequent years. Eligible part-time employees earn pro-rated PTO.
  • Retirement: Effective with your employment start date, you will be eligible to participate in the 401(k) Plan.
  • Education, Learning & Development: We offer college tuition and education assistance programs; Udemy Learning courses; and ongoing learning and development opportunities.

Local Candidates Only
No Visa Sponsorship
Principals only - no Agencies or calls please

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