Senior Backend Developer jobs in Niwot, CO

Senior Backend Engineer, Platform Enablement

Remote

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Today

GitLab is the intelligent orchestration platform for DevSecOps. GitLab enables organizations to increase developer productivity, improve operational efficiency, reduce security and compliance risk, and accelerate digital transformation. More than 50 million registered users and more than 50% of the Fortune 100* trust GitLab to ship better, more secure software faster. The same principles built into our products are reflected in how our team works: we embrace AI as a core productivity multiplier

Full-time

USD 156,800.00 - 235,200.00 per year

Senior Backend Engineer | Accounts Receivable

Remote or New York, New York

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Today

About Ramp Ramp is building the smart infrastructure for finance teams, embedded in the transaction flow of every dollar a business spends. We automate how over $200B in annualized spend flows in and out of 70,000+ companies: authorizing payments, flagging risk, categorizing spend, and closing books. The problems are high-stakes, data-dense, and unforgiving. We hire people with high agency and high urgency. We look for slope over intercept. We care less about where you trained and more about

Full-time

USD 204,000.00 - 280,000.00 per year

Senior Backend Engineer | Token Spend Management

Remote or New York, New York

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Today

About Ramp Ramp is building the smart infrastructure for finance teams, embedded in the transaction flow of every dollar a business spends. We automate how over $275B in annualized spend flows in and out of 85,000+ companies: authorizing payments, flagging risk, categorizing spend, and closing books. The problems are high-stakes, data-dense, and unforgiving. We hire people with high agency and high urgency. We look for slope over intercept. We care less about where you trained and more about

Full-time

USD 204,000.00 - 280,000.00 per year

Senior Software Backend Engineer, Foundations

Remote

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Today

NetBox Labs seeks a Senior Software Backend Engineer for the Foundations team. Foundations is the platform team that builds core services for identity, authentication, and access control. Foundations also builds shared platform primitives that other engineering teams depend on. You will own delivery of complex components within Foundations projects and act as a go-to technical expert for your area. You will report to the Foundations Engineering Manager. Responsibilities: Act as the team's go-to

Full-time

USD 85,000.00 - 195,000.00 per year

Direct Client :: W2 position :: Looking for Sr. Java Backend Developers & Sr. Fullstack Java Developers with Health Insurance Exp.:: Remote

Remote

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2d ago

W2 Contract to Fulltime position No Sponsorship candidates required Position 1: Role: Sr. Java Backend Developer Location: Remote Job Description: We are looking for an experienced Java Backend Developer to design, develop, and maintain scalable, secure, and high-performance enterprise applications in a healthcare and health insurance environment. The ideal candidate will have strong hands-on experience with Java, Spring Boot, Microservices, REST APIs, and database technologies. The candidate

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Contract

Depends on Experience

Senior Backend Engineer, Experimentation

Remote

•

Today

About the Job: LaunchDarkly is seeking a Senior Backend Engineer to join our Experimentation team. The Experimentation team is building one of the company's most strategic product areas: a platform that helps leading engineering organizations move beyond intuition and make product decisions with real statistical confidence. Sitting at the intersection of large-scale systems, data science, and user experience, the team is creating a best-in-class experimentation product that lets customers set

Full-time

USD 191,800.00 - 263,670.00 per year

Sr. Backend Engineer / .Net / Microservices / Lambda / AWS / Distributed Sys. / Remote

Remote or Newport Beach, California

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Today

Our client is a Southern California product engineering company building streaming software for media organizations. Its platform supports live and on-demand content across web, mobile, and connected TV. They are seeking a Senior / Principal .NET Backend Software Engineer to build and improve the services behind their streaming products. This is a hands-on role focused on C#/.NET, distributed systems, and AWS. You will develop APIs, event-driven services, and content ingestion workflows while im

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Full-time

USD 140,000.00 - 160,000.00 per year

Senior Backend or Full Stack Engineer / .NET / React / Distributed Systems

Remote

•

Today

A SaaS company that builds streaming and app development platforms for media companies is hiring Senior Backend or Full Stack Engineers. You'll build and harden the backend that runs APIs, event-driven services, ingestion and packaging workflows, and distributed systems behind live and on-demand streaming. Ideal candidates have experience with large .NET estate on AWS, working with dozens of services and serverless applications. This is all new development. This role is fully remote. Required Sk

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Full-time

$130000 - $160000

Senior Backend Software Engineer, Robot Fleet Orchestration

Remote

•

Today

About Mytra: We're creating an entirely new way to solve the most ubiquitous problem in industry - moving and storing material. We're applying robotics and distributed software to create a new class of product for this $1T market. We're focused on the supply chain industry first. The industry is in a massive bind with the continued growth of e-commerce, sharp rise in costs, and supply chain disruptions. What has been a "sleepy" industry for decades is now at the epicenter of sustaining the glob

Full-time

USD 170,000.00 - 200,000.00 per year

Remote Senior Backend Engineer (Python/FastAPI)

Remote

•

Today

About Us: Based in San Francisco, California, Turing is the worlds leading research accelerator for frontier AI labs and a trusted partner for global enterprises deploying advanced AI systems. Turing supports customers in two ways: first, by accelerating frontier research with high-quality data, advanced training pipelines, plus top AI researchers who specialize in software engineering, logical reasoning, STEM, multilinguality, multimodality, and agents; and second, by applying that expertise to

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Contract

200 - 300

Senior Backend Engineer - Databases Tempo | US | Remote

Remote

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Today

Grafana Labs is the company behind Grafana Cloud, the fully managed observability platform trusted by more than 10,000 organizations to ensure reliability, resolve incidents faster, and optimize telemetry at scale. Built on open source and open standards and designed for interoperability across any stack, Grafana Cloud brings AI to observability and observability to AI, giving teams (and their agents) unified visibility so they can see, understand, and act on all their disparate data, wherever i

Full-time

USD 154,445.00 per year

Senior Software Engineer, Backend

Remote

•

Today

About Aalyria: Aalyria is a leading technology company that supplies laser communications technology and temporospatial software-defined networking platforms to the aerospace industry. With technology acquired from Google, Aalyria is at the forefront of innovation in satellite and airborne mesh networks, as well as cislunar and deep-space communications. We are revolutionizing the orchestration and management of planetary mesh networks using any radio or optical spectrum, any orbit, and any har

Full-time

USD 165,000.00 - 195,000.00 per year

Senior Backend Engineer II, AI Native, Vertical Experiences

Remote

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Today

About Life360 Life360's mission is to keep people close to the ones they love. Our category-leading mobile app, Tile tracking devices, and Pet GPS tracker empower members to protect the people, pets, and things they care about most with a range of services, including location sharing, safe driver reports, and crash detection with emergency dispatch. Life360 serves approximately 102.4 million monthly active users (MAU), as of June 30, 2026, across more than 180 countries. Life360 delivers peace

Full-time

USD 148,000.00 - 216,000.00 per year

Senior Backend Software Engineer - Loki | NASA | Remote

Remote

•

Today

Full-time

USD 154,000.00 - 185,000.00 per year

Senior Backend Engineer - Databases - Analytics | US | Remote

Remote

•

Today

Full-time

USD 154,445.00 - 185,334.00 per year

Senior Backend Software Engineer (Confluence Cloud AI Automation and Search)

Remote or San Francisco, California

•

Today

Overview Working at Atlassian Atlassians can choose where they work - whether in an office, from home, or a combination of the two. That way, Atlassians have more control over supporting their family, personal goals, and other priorities. We can hire people in any country where we have a legal entity. Responsibilities "Design, build, and ship backend features and capabilities in a highly scalable, cross-geographic distributed environment while collaborating closely with engineers, architects

Full-time

USD 224,800.00 - 235,000.00 per year

Senior Software Engineer - Backend / Cloud Services

Remote

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Today

About This Role: The Senior Software Engineer (Backend/Cloud Services) provides hands-on technical leadership for the backend systems that support Hunter's AWS-based IoT consumer application. This role owns cloud architecture, leads the design, development, and implementation of AWS Lambda microservices, infrastructure as code, REST APIs consumed by mobile and web applications, event-driven services, database models, telemetry pipelines, and AWS IoT Core device communication. The position acts a

Full-time

USD 110,000.00 - 135,000.00 per year

Senior Backend AI Engineer / Startup

Remote

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Today

Looking to build AI systems that directly improve the customer experience for a rapidly growing consumer technology company? An innovative venture-backed organization in the health, wellness, and connected-device space is seeking a Full Stack AI Engineer to join their team. This full-time position focuses on building AI-powered tools, integrations, automation platforms, monitoring systems, and internal applications using Python, TypeScript/JavaScript, SQL, APIs, and modern AI technologies. You'l

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Full-time

$180000 - $230000

Senior Software Engineer, Backend (AI Platform)

Remote

•

Today

At Affirm, we exist for the moments that matter-giving people a clear, predictable way to pay over time, with no hidden fees, no surprises, and no tradeoffs on what matters most. Affirm's engineering team is building a large-scale, fault-tolerant, and global infrastructure that is shared across multiple financial products, merchants, and vendors. Ensuring that our infrastructure is transparently available to all engineers is critical to the success of the business. We pride ourselves on our cul

Full-time

USD 195,000.00 - 255,000.00 per year

Senior Backend Tech lead

Remote

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Yesterday

Senior BE SeshGen Service Maintenance Level: Lead/Tech Lead Work Model: Remote Location: Remote - East Cost time zone You have experience operating distributed, high-volume backend services in production, and you know how to deploy them and keep them runningYou are comfortable triaging incidents on systems you did not build, using runbooks, dashboards and logsYou have hands-on experience with Java and/or Python backend services, Kubernetes, and a major cloud provider (Google Cloud Platform prefe

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Contract

Depends on Experience

Senior Backend Developer jobs in Niwot, CO 80503, USA