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Senior Software Engineer (Backend Focus)

Hybrid in O'Fallon, Missouri

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Today

Position Title Senior Software Engineer (Backend Focus) Requisition Date 4/22/2026 1:00:19 PM No. of Position(s) 1 Last Updated On 4/24/2026 12:59:08 PM Job Location O Fallon, MO, USA Covered No Bill Rate Range 65/hr C2C Employment Type Temporary Estimated Duration (In Months) 13 Work Model Hybrid Must have Skills/Attributes JavaScript, PHP, Python, Software Development Shift Standard work hours. Off hours support may also be required at times. Nice to have Skills/Attributes Right To Repr

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Contract

60 - 65

Senior Software Engineer (Backend Focus)

Hybrid in O'Fallon, Missouri

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Today

Job Requirements: - Extensive knowledge and experience with Java, Spring Boot, gRPC - Good knowledge in creation and working with CI/CD pipelines using Jenkins - Experienced in event driven systems (ActiveMQ, Apache Kafka, NATS, etc) - Experience in financial system encryption (PIN Blocks, CHIP, CVC) would be beneficial - Experience with testing frameworks and methodologies (Gtest, JUnit, BlazeMeter, mocking, etc.) - Experienced in building platforms with Microservice architecture and RESTful AP

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Contract

Depends on Experience

Sr. Software Engineer (Backend Focus)

Remote or Eden Prairie, Minnesota

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Today

Description Position: Senior Software Engineer (Full Stack with Backend Focus) Location: Remote Salary: $165,000 - 175,000 base with bonus potential For immediate and confidential consideration, please send a message to MEREDITH CARLE on LinkedIn or send an email to me with your resume. My email can be found on my LinkedIn page. Senior Product Engineer (Full-Stack | Mobile-First) - Remote Our client is building a new digital product from scratch inside a well-funded, established organiz

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Full-time

USD 165,000.00 - 175,000.00 per year

Back-End Software Engineer (Experienced or Senior)

Berkeley, Missouri

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Today

Back-End Software Engineer (Experienced or Senior) Company: The Boeing Company The Boeing Company is currently seeking Back-End Software Engineer (Experienced or Senior) to lead our Model-Based Engineering Software (MBE) team located in Berkeley, Missouri. This position will focus on supporting the Boeing Defense Services (BDS) business organization. This position will focus on developing prototypes and new capabilities for web-applications and services. You will design APIs, create data proc

Full-time

USD 126,650.00 - 171,350.00 per year

Senior Software Engineer (Artificial Intelligence and Decision Product Enablement Program)

O'Fallon, Missouri

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17d ago

Our Purpose Mastercard powers economies and empowers people in 200+ countries and territories worldwide. Together with our customers, we?re helping build asustainableeconomy where everyone can prosper. We support a wide range of digital payments choices, making transactionssecure, simple, smart and accessible. Our technology and innovation, partnerships and networks combine to deliver a unique set of products and services that help people, businesses and governments realize their greatest poten

Full-time

Compensation information provided in the description

Senior Software Engineer

O'Fallon, Missouri

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4d ago

{"description": " Our Purpose Mastercard powers economies and empowers people in 200+ countries and territories worldwide. Together with our customers, we're helping build a sustainable economy where everyone can prosper. We support a wide range of digital payments choices, making transactions secure, simple, smart and accessible. Our technology and innovation, partnerships and networks combine to deliver a unique set of products and services that help people, businesses and governments realize

Full-time

USD 115,000.00 - 184,000.00 per year

Senior Software Engineer - Backend

Remote

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Today

Company Overview Milestone Technologies is a global IT managed services firm that partners with organizations to scale their technology, infrastructure and services to drive specific business outcomes such as digital transformation, innovation, and operational agility. Milestone is focused on building an employee-first, performance-based culture and for over 25 years, we have a demonstrated history of supporting category-defining enterprise clients that are growing ahead of the market. The comp

Full-time

Senior Software Engineer

O'Fallon, Missouri

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3d ago

Full-time

USD 115,000.00 - 184,000.00 per year

Senior Software Engineer

O'Fallon, Missouri

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18d ago

Full-time

USD 115,000.00 - 184,000.00 per year

Senior Software Engineer, Backend (Consumer - Advanced Trading)

Remote

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28d ago

Ready to be pushed beyond what you think you're capable of? At Coinbase, our mission is to increase economic freedom in the world. It's a massive, ambitious opportunity that demands the best of us, every day, as we build the emerging onchain platform - and with it, the future global financial system. To achieve our mission, we're seeking a very specific candidate. We want someone who is passionate about our mission and who believes in the power of crypto and blockchain technology to update the

Full-time

USD 186,065.00 - 218,900.00 per year

Senior Software Engineer, Backend - Platform (Payments)

Remote

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28d ago

Full-time

USD 186,065.00 - 218,900.00 per year

Senior Software Engineer, Backend (Consumer - Retail Cash)

Remote

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28d ago

Full-time

Senior Software Engineer, Backend - Platform (Core AI Automation)

Remote

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28d ago

Full-time

USD 186,065.00 - 218,900.00 per year

Senior Staff Backend Software Engineer, GraphQL

Remote

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Today

Airbnb was born in 2007 when two hosts welcomed three guests to their San Francisco home, and has since grown to over 5 million hosts who have welcomed over 2 billion guest arrivals in almost every country across the globe. Every day, hosts offer unique stays and experiences that make it possible for guests to connect with communities in a more authentic way. The Community You Will Join: Viaduct is a unified data access layer connecting most of Airbnb's online data. More than 70% of Airbnb's A

Full-time

USD 244,000.00 - 305,000.00 per year

Senior Software Engineer, Backend (Institutional - Foundations, Reporting & Monetization)

Remote

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28d ago

Full-time

USD 186,065.00 - 218,900.00 per year

Senior Software Engineer, Backend (Platform - Financial Eng)

Remote

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28d ago

Full-time

USD 186,065.00 - 218,900.00 per year

Senior Software Engineer, Core Experiences - St. Louis, MO, USA

St. Louis, Missouri

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Today

Mission Speechify is the easiest way to listen to the world's information. Articles on the web, documents in the cloud, books on your phone. We absorb it all and let you listen to it at your desk, on the go, at your own speed, and with tools that make learning easier, deeper, and faster. What streaming services have done for audio entertainment, we're doing for audio information. And whatever we're doing seems to be working. We're #1 in our category, and experiencing exponential growth. Overv

Full-time

USD 140,000.00 - 200,000.00 per year

Senior Software Engineer, Backend (Developer - Foundations)

Remote

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28d ago

Full-time

USD 186,065.00 - 218,900.00 per year

Senior Software Engineer, Backend (Institutional - Tokenization)

Remote

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28d ago

Full-time

USD 186,065.00 - 218,900.00 per year

Senior Staff Software Engineer, Backend (Consumer - Financial Services and Loyalty)

Remote

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28d ago

Full-time

USD 253,895.00 - 298,700.00 per year

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