Jobs in the United States

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Added 1 min ago
Network Automation Engineer
Quantum Sky
Chantilly, VA
Added 3 mins ago
Artificial Intelligence/Machine Learning Engineers
FIS Management Services LLC
United States
Familiarity with orchestration frameworks and tools such as LangChain, LlamaIndex, AutoGen, OpenAI Assistants API or Model Context Protocol.
Added 6 mins ago
C
Solutions Engineer - Payments
Checkout.com
New York, NY · San Francisco, CA · Atlanta, GA
- $154,000 to $181,000 USD / year
- Deliver compelling presentations and product demonstrations to prospects, leveraging sales decks, user interfaces, API walk-throughs, reports, and integration examples.
Added 8 mins ago
Sr. AI Engineer
CalPrivate Bank
San Diego, CA · Brea, CA · El Segundo, CA · Newport Beach, CA
Added 9 mins ago
Application developer senior
Starbucks Coffee Company
TN
Now Brewing – Senior Application Developer, Data & Analytics Hub
Added 10 mins ago
S
Manager of Product Engineering
Sourcewell
Remote, United States
- $132,320 to $165,400 USD / year
Experience contributing to system architecture, solution design, API development, or technical roadmaps in either software or data engineering environments.
Added 12 mins ago
IT Generalist
ZLINE
Reno, NV
…custom development, external integrations, order management, and API…
Added 12 mins ago
WH
Senior Business Systems Administrator
WPS Health Solutions
Denver, CO
- $40,123 USD / year
Manage integrations and data flows, including API-based connections, middleware, ETL jobs, error handling processes, and cross-system data reconciliation.
Added 13 mins ago
2UniFi-Enterprise Technology - Digital Business Analyst II
NBH Bank
Kansas City, MO
…supporting the bank’s Finxact core (Fiserv’s cloud-native, API-first, real-time platform) and Savana, a digital banking platform that connects to the core to deliver user-friendly…
Added 16 mins ago
UG
Senior Software Engineer
UnitedHealth Group
Minneapolis, MN
- $91,700 to $163,700 USD / year
2+ years of experience with RESTful API development (FastAPI) and microservices architecture
Added 16 mins ago
UG
Senior Architect
UnitedHealth Group
Eden Prairie, MN
- $112,700 to $193,200 USD / year
Translate business opportunities into target-state architecture concepts, capability models, system interaction flows, API integration patterns, data handoffs, and implementation options
Added 17 mins ago
MS
Senior Java Full Stack Software Engineer
MATRIX SYSTEMS & TECHNOLOGIES INC
Washington, DC
- $70,000 to $95,000 USD / year
· Experience with API integration, database access and application troubleshooting.
Added 19 mins ago
IG
Full Stack Developer - INTL India
Insight Global
Remote, United States
- From $17 USD / hour
Experience developing React-based web applications with file upload/download capabilities and backend API integration.
Added 21 mins ago
Senior Product Manager, Platform Ecosystem
DTN, LLC
Dallas, TX
6+ years of product management experience, including at least 2 years owning a platform product such as a developer platform, API product, marketplace, or partner ecosystem.
Added 28 mins ago
Forward Deployed Software Engineer
Convr
Remote, United States
Work across the entire stack, from optimizing database queries and API endpoints to crafting intuitive UI/UX.
Added 37 mins ago
Principal Data & Applied Scientist - Ontologies & Semantics
SAP
Palo Alto, CA
…Engine, SAP Business Data Cloud, SAP One Domain Model, SAP Graph API, and SAP Business Accelerator…
Added 38 mins ago
Business Systems Security Engineer
Safran
West Henrietta, NY
…Microsoft Entra ID, SSO, MFA, OAuth 2.0, OpenID Connect, SAML, API security, and service account management. Familiarity with cloud environments, application integrations, security logging,…
Added 39 mins ago
Full Stack Engineer
YPO, Inc.
Remote, United States
…from the member-facing React experience through the GraphQL API layer, into the AI-powered intelligence and data services that drive personalized leadership insights for YPO’s global member…
Added 42 mins ago
P
Senior Data Engineer
Pontera
NY
- $180,000 to $220,000 USD / year
…warehouses, and a solid understanding of dimensional modeling, ELT, API integrations and data quality. Hands-on experience with Snowflake and DBT is…
Added 43 mins ago
Software Development Engineer, Amazon Shopping
Amazon.com Services LLC
Seattle, WA · Palo Alto, CA
In this role, you will build expertise in online service architecture, API development, and distributed systems that power responsive agentic AI applications at scale. You'll get…
Added 43 mins ago
Senior Frontend Engineer - 3057122
Apex Systems, Inc.
Brooklyn, OH
…contracts. - Partner with backend engineering teams to ensure API contracts, error handling, and data models support reliable frontend experiences. - Utilize Node.js for frontend-adjacent…
Added 44 mins ago
Data Engineering Intern (Spring 2027)
First Solar Inc
Perrysburg, OH
…a Streamlit application while also gaining exposure to REST API development, Sharepoint data interactions, JMP statistical analysis software scripting development, and other application…
Added 44 mins ago
Software Engineer 2 (ASP.NET Web API)
U.S. Bank
Cincinnati, OH
Using Microsoft platform technologies (ASP.NET Web API) and Azure, design, build, test, implement and modify existing business-tier components, Web applications, and database objects
Added 44 mins ago
Agentic AI Builder
Insight Global
Cincinnati, OH
Experience building API integrations across business systems.
Added 44 mins ago
Sr. Systems Engineer – Mainframe API Services
U.S. Bank
Cincinnati, OH
U.S. Bank is seeking a Sr. Systems Engineer – Mainframe API Services to support highly available mainframe API platforms and modernization initiatives. This role requires hands-on expertise…

Fresno Summit Advisors

Senior Backend Engineer

Remote, United States

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Job details

Posting language: English
Posted: Oct 29, 2026

Original job description

Fresno Summit Advisors https://fresnosummit.com/ is partnering with the company below to support hiring for this role. As their recruiting partner, we help manage the search from candidate identification and outreach through interview coordination and closing, working closely with the company’s leadership and hiring team throughout the process. This opportunity is being shared on our client’s behalf to expand its reach and connect with exceptional candidates.

ABOUT MARKETTIME

MarketTime https://www.markettime.com is a growing B2B ecommerce SaaS company helping businesses sell smarter and faster. Our multi-tenant platform powers enterprise customers across multiple industries, processing sensitive financial data - including credit card payments - while maintaining rigorous PCI DSS compliance.

Built on a scalable cloud-native architecture with robust public APIs and a MySQL-backed data platform, we deliver secure, reliable, and high-performance commerce solutions that our customers depend on every day.

We're a fully distributed engineering team that values ownership, collaboration, continuous improvement, and building software the right way.

ABOUT THE ROLE

We're looking for a Senior Backend Engineer (Java/Spring) to help design, build, and evolve our ecommerce platform. You'll work closely with Product and other engineers to solve complex technical problems, shape the architecture of our platform, and deliver secure, scalable solutions for our customers.

Beyond writing code, you'll mentor other engineers, drive engineering best practices, and help ensure our systems remain secure, reliable, and compliant.

TECH STACK

Java 25 • Spring Boot 4 • MySQL • REST APIs • AWS • GitHub Actions • Containers • SQS • Terraform • React

RESPONSIBILITIES

Design, develop, deploy, and maintain Spring Boot services powering our SaaS ecommerce platform.
Design secure, scalable, and highly available solutions that meet PCI DSS and other security requirements.
Design and build REST APIs that are intuitive, backwards-compatible, secure, and performant.
Collaborate with Product, QA, and other engineers throughout the software development lifecycle.
Design and optimize relational database schemas, queries, and data access patterns using MySQL.
Participate in architectural discussions and help drive technical decisions across the platform.
Write clean, maintainable, and idiomatic Java using modern language features and engineering best practices.
Champion engineering best practices including code reviews, automated testing, CI/CD, observability, and documentation.
Use AI-assisted development tools (e.g., Claude Code, Cursor, GitHub Copilot) to accelerate delivery, while owning the correctness, security, and maintainability of everything you ship.
Take ownership of features from design through production, including monitoring and operational support.
Work in small, incremental pull requests with a strong emphasis on code reviews, automated testing, and continuous delivery.
Help evolve our architecture by challenging assumptions and continuously improving how we build software.
Mentor and support engineers through technical leadership, design reviews, and pair programming.
Troubleshoot production issues and participate in an on-call rotation as needed.

REQUIRED QUALIFICATIONS

Operated as a senior engineer or technical lead on Java backend applications.
Strong expertise with Spring Boot 3+ and the broader Spring ecosystem.
Strong proficiency with modern Java, with new development targeting Java 25.
Ability to write clean, idiomatic Java using modern language features such as streams, lambda expressions, Optional, records, and pattern matching.
Experience with Hibernate/JPA or jOOQ.
Hands-on experience building and operating production workloads on AWS.
Proven ability to design and build RESTful APIs.
Strong SQL skills with MySQL or PostgreSQL.
Working knowledge of asynchronous messaging systems (SQS, RabbitMQ, ActiveMQ).
Experience building and deploying containerized applications.
Experience with GitHub Actions or other modern CI/CD platforms.
Hands-on experience using AI coding tools in professional work, with sound judgment about when to trust, verify, or discard their output, and a clear understanding of what data must never be shared with them.
Solid understanding of software design principles and distributed systems.
Excellent communication, collaboration, and problem-solving skills.
A track record of mentoring engineers and leading technical initiatives.
Self-motivated and effective working in a remote-first environment.

PREFERRED QUALIFICATIONS

Experience building and operating multi-tenant SaaS applications.
Familiarity with Infrastructure as Code using Terraform and GitOps practices.
Hands-on experience deploying and operating AWS services including VPCs, ALBs, EC2, ECS, SQS, and S3.
Working knowledge of React or Angular.
Understanding of payment processing systems, PCI DSS, and security best practices.
Background in ecommerce, fintech, or payment processing.
Familiarity with API security concepts including OAuth 2.0, JWT, authentication, authorization, and rate limiting.
Experience with test-driven development (TDD) and modern testing frameworks.
Experience establishing team practices for AI-assisted development (e.g., shared context and conventions files, review standards for AI-generated code, guardrails for sensitive data).
Exposure to C#/.NET is a plus.

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More about this job

Skills

Oracle Java
Spring Boot
MySQL
API development
AWS
GitHub
IBM Terraform
React
Security regulations
Software development
Modern languages
Test automation
CI/CD
Documentation
Leadership
Troubleshoot
SQL
PostgreSQL
RabbitMQ
Design principles
Communication skills
Collaboration
Problem solving
Coaching
Infrastructure as code
C#
.NET

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