Ruby jobs in O'Fallon, MO

Remote

•

5d ago

Primary Skills 10+ years of experience in Ruby on Rails development Strong knowledge of Ruby, Rails 6.x/7.x/8.x Experience in REST APIs development and integration Strong understanding of Object-Oriented Programming (OOP) concepts Experience with PostgreSQL, MySQL, or other relational databases Hands-on experience with Git/GitHub Experience with RSpec, Minitest, or similar testing frameworks Strong debugging and performance tuning skills Secondary Skills Experience with Docker and Kubernetes E

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Third Party, Contract

Depends on Experience

Ruby/Ruby on Rails Developer

Remote

•

13d ago

Role: Ruby/Ruby on Rails Developer Location: Remote Duration: Long Term Contract We are looking for an experienced Full-Stack Tech Lead with strong hands-on expertise in Ruby/Ruby on Rails, along with solid experience in Java/Spring Boot and React. The ideal candidate will provide technical leadership, drive architecture, and development across multiple workstreams, and mentor engineering teams. Key Responsibilities Lead technical design and development across Ruby on Rails, Java/Spring Boot,

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Contract, Third Party

Depends on Experience

Ruby on Rails Developer

Remote

•

10d ago

Iris s leading client is looking for Ruby on Rails Developer to join their team. It s a fully remote role. Job Title: Ruby on Rails Developer Key skills : Ruby on Rails Developer with Sidekiq Location: fully remote Duration: Long Term contract Job Description: We are seeking a skilled and innovative Ruby on Rails Developer to design, build, and maintain robust full-stack web applications. In this role, you will lead backend logic development, manage central databases, and ensure top performance

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Full-time

Depends on Experience

Ruby on Rails developer

Remote

•

5d ago

Key Responsibilities Develop, enhance, and maintain applications using Ruby on Rails. Design, develop, and consume RESTful APIs and microservices. Perform application modernization, including Rails version upgrades and dependency management. Analyze and remediate security vulnerabilities, CVEs, and code quality issues. Collaborate with product owners, architects, QA teams, and business stakeholders. Ability to work in a fast-paced application modernization environment. Capable of contributing fr

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Contract

Depends on Experience

Technical Lead - Ruby / Ruby on Rails

Remote

•

Today

Capital Technology Group provides expert consulting services software development, digital transformation, human-centered design, data analytics and visualization, and cybersecurity. Our multidisciplinary teams use agile methodologies to rapidly and incrementally deliver value in close collaboration with our clients. For over a decade, we have been trusted by both federal and commercial clients to solve complex, mission-critical business challenges. The quality of our work has been recognized by

Full-time

USD 120,000.00 - 165,000.00 per year

Jr. Ruby On Rails Developer - Remote or Grand Rapids

Remote

•

Today

The Jr. Ruby on Rails Developer is responsible for developing new applications, enhancing existing applications, and interfacing with a legacy ERP system. The Jr. Ruby on Rails Developer works closely with the Business Systems Manager, Information Systems team, and IT Manager to create applications that improve productivity across the business. Essential Duties and Responsibilities Write, clean, maintainable, and efficient code Design robust, scalable, and secure features Analyzes business app

Full-time

Site Reliability Engineer II

O'Fallon, Missouri

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20d ago

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 their greatest pot

Full-time

USD 76,000.00 - 127,000.00 per year

Application Developer II

St. Louis, Missouri

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Today

POSITION SUMMARY McCarthy is seeking a full-time Application Developer located in St. Lous, MO who as part of the Enterprise Solutions and Analytics team, will play a crucial role in building our application and integration portfolio, supporting our existing systems and driving innovation following modern DevSecOps practices. RESPONSIBILITIES Solution Design and Development Design and develop integration solutions by applying best practices and standard patterns in data model design, data trans

Full-time

Senior Site reliability Engineer (Linux)

Remote

•

2d ago

Job Description: 7+ years working with Linux in productionStrong automation skills (Python and/or Ruby, Ansible preferred)Experience debugging complex system issuesComfortable working across cloud + on-prem environmentsDocker / KubernetesAMIs or container image buildingGo, C, or other systems-level languages Job Responsibilities: Build automation for Linux host lifecycle (config, patching, images)Own system services, base images, and infrastructure componentsDebug production issues across OS, pe

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Full-time

130000 - 140000

Senior ROR Developer

Remote

•

3d ago

Required SkillsPrimary Skills10+ years of experience in Ruby on Rails developmentStrong knowledge of Ruby, Rails 6.x/7.x/8.xExperience in REST APIs development and integrationStrong understanding of Object-Oriented Programming (OOP) conceptsExperience with PostgreSQL, MySQL, or other relational databasesHands-on experience with Git/GitHubExperience with RSpec, Minitest, or similar testing frameworksStrong debugging and performance tuning skillsSecondary SkillsExperience with Docker and Kubernete

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Contract, Third Party

Depends on Experience

Cyber Data Analysis Engineer

St. Louis, Missouri

•

Today

Job Description What You Will Be Doing: Help customers send their log data through one or more enterprise networks to a specific destination.Design, build, and maintain log data collection pipelines consisting of products like Cribl, ArcSight, Kafka, various AWS products, Linux servers, and Microsoft servers.Design, build, and maintain log data management environments using products such as Elasticsearch or Sentinel.Research and identify the physical or cloud resources needed to optimize suppo

Full-time

Software Engineer, Trust

Remote

•

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: Imagine getting off a long international flight, standing in the freezing rain, attempting to contact your

Full-time

USD 162,000.00 - 186,000.00 per year

Staff Software Engineer, Time and Scheduling

Remote or New York, New York

•

Today

About Gusto At Gusto, we're on a mission to grow the small business economy. We handle the hard stuff - payroll, health insurance, 401(k)s, and HR - so owners can focus on their craft and their customers. With teams in Denver, San Francisco, and New York, we support more than 500,000 small businesses nationwide and are building a workplace that reflects the people we serve. All full-time employees receive competitive base pay, benefits, and equity (RSUs) - because everyone who helps build Gust

Full-time

USD 163,000.00 - 204,000.00 per year

Senior Site Reliability Engineer (Linux)

Remote

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2d ago

Senior Site Reliability Engineer (Linux) Location: Remote, prefer PST hours Visa Requirements: UC Citizenship We are looking for a Senior SRE (Linux) to build and operate the systems that run on every host across our infrastructure. Our team owns OS configuration, automation, AMIs, and container base images across a large-scale hybrid environment (AWS + on-prem). If you enjoy working across layersfrom automation to low-level debuggingthis role sits right at that boundary. What Youll Do Build au

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Contract

55 - 70

Backend Developer - Contingent

Remote or McLean, Virginia

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Today

Public Trust Eligibility Required This is a contingent position, meaning employment is dependent upon the successful award of the associated contract to Aretum and completion of any required background investigation or security clearance verification. About Aretum Aretum is a mission-driven organization committed to delivering innovative, technology-enabled solutions to our customers across defense, civilian, and homeland security sectors. Our teams work at the intersection of strategy, techno

Full-time

USD 120,000.00 - 145,000.00 per year

Senior Software Engineer, Core Systems & Integrations

Remote

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Today

Omada Health is on a mission to bend the curve of chronic disease. Job overview: We are hiring a Senior Software Engineer to lead development of critical platform capabilities that power Omada's connected care experience. This role focuses on building and scaling reliable systems that integrate and validate critical health data and enable real-time, clinically meaningful insights for care teams and members. You will operate at the intersection of data integrations, backend systems, and health

Full-time

USD 179,400.00 - 224,300.00 per year

Senior Site Reliability Engineer (SRE)

Remote or Atlanta, Georgia

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Today

At PrizePicks, we are the fastest-growing sports company in North America, as recognized by Inc. 5000. As the leading platform for Daily Fantasy Sports, we cover a diverse range of sports leagues, including the NFL, NBA, and Esports titles like League of Legends and Counter-Strike. Our team of over 550 employees thrives in an inclusive culture that values individuals from diverse backgrounds, regardless of their level of sports fandom. Ready to reimagine the DFS industry together? We are seeking

Full-time

USD 120,000.00 - 175,000.00 per year

Sr. Backend Software Engineer (NodeJS)

Remote or Minneapolis, Minnesota

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Today

For over four decades, PAR Technology Corporation (NYSE: PAR) has been a leader in restaurant technology, empowering brands worldwide to create lasting connections with their guests. Our innovative solutions and commitment to excellence provide comprehensive software and hardware that enable seamless experiences and drive growth for over 100,000 restaurants in more than 110 countries. Embracing our "Better Together" ethos, we offer Unified Customer Experience solutions, combining point-of-sale,

Full-time

USD 140,000.00 - 160,000.00 per year

Site Reliability Engineer II

Remote

•

Today

We're transforming the grocery industry At Instacart, we invite the world to share love through food because we believe everyone should have access to the food they love and more time to enjoy it together. Where others see a simple need for grocery delivery, we see exciting complexity and endless opportunity to serve the varied needs of our community. We work to deliver an essential service that customers rely on to get their groceries and household goods, while also offering safe and flexible

Full-time

USD 160,000.00 - 169,000.00 per year

Full-Stack Engineer

Remote or San Francisco, California

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Today

About the team You will be joining Atlas, our Continuous Engineering team. Our focus is keeping existing customers successful: we take the feature requests and bug fixes that come through Customer Success and Product, prioritize them, and see them through to release. Because those requests can touch almost any part of the product, our work spans most of Sift's major technical domains and products. The requests we take on are typically high-impact and come directly from customers, so the work y

Full-time

USD 140,000.00 - 190,000.00 per year

Ruby jobs in O'Fallon, MO, USA