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Frontend Contract Jobs in Colorado (NOW HIRING)

Staff Software Engineer

Denver, CO · On-site

$130 - $170/hr

... front-end solutions using modern React patterns * Collaborate with Product, UX, and Backend teams to define and implement user-centric features, including API contracts and edge-case handling * Build ...

This includes designing system architecture, implementing frontend and backend components ... and contract wage rates, relevant prior work experience, specific skills and competencies ...

Showing results 41-60

Frontend Contract information

What is a frontend contract?

A Frontend Contract typically refers to a temporary or project-based position focused on building and maintaining the user-facing parts of websites or web applications. Frontend contractors use technologies like HTML, CSS, and JavaScript frameworks (such as React, Angular, or Vue.js) to create interactive and responsive user interfaces. These roles are usually hired on a contract basis, meaning the employment is for a fixed term or until specific project goals are completed, rather than being a permanent employee. Frontend contractors often work with design teams and backend developers to ensure seamless integration and optimal user experience.

What are the key skills and qualifications needed to thrive as a frontend contractor?

To thrive as a Frontend Contractor, you need strong proficiency in HTML, CSS, JavaScript, and relevant frameworks like React or Vue, usually backed by proven project experience or a relevant degree. Familiarity with version control systems (such as Git), build tools, and understanding of responsive design and cross-browser compatibility is essential. Excellent problem-solving, time management, and communication skills help you collaborate with teams and meet client deadlines. These competencies ensure you can deliver high-quality, user-friendly interfaces that align with client requirements and industry standards.

How does working as a frontend contract developer typically impact collaboration with product and design teams?

As a Frontend Contract developer, you’ll often be integrated into cross-functional teams, collaborating closely with product managers and designers to translate project requirements and visual mockups into functional user interfaces. While contract roles may have a defined project scope and timeline, regular communication through stand-ups, reviews, and feedback sessions is crucial to ensure alignment with evolving project needs. Being proactive in clarifying requirements and suggesting technical solutions can help foster strong working relationships and ensure project success, even within a limited contract period.

What is the difference between Frontend Contract vs Frontend Developer?

AspectFrontend ContractFrontend Developer
CredentialsTypically requires a portfolio, experience, and sometimes specific certificationsRequires similar skills, often with formal education or certifications in web development
Work EnvironmentTemporary, project-based, often remote or freelanceFull-time, permanent or freelance, can be remote or on-site
Employer UsageHired for specific projects or short-term needsPart of ongoing team or company structure
Search & ComparisonOften compared for flexibility and project scopeCompared for stability and career growth

In summary, a Frontend Contract role is typically a short-term, project-based position focused on specific deliverables, while a Frontend Developer usually refers to a more permanent, ongoing role within a company. Both require similar skills but differ mainly in employment type and work setup.

What are the most commonly searched types of Frontend jobs in Colorado?

The most popular types of Frontend jobs in Colorado are:

What cities in Colorado are hiring for Frontend Contract jobs?

Cities in Colorado with the most Frontend Contract job openings:

Infographic showing various Frontend Contract job openings in Colorado as of August 2026, with employment types broken down into 91% Full Time, 4% Part Time, and 5% Contract. Highlights an 79% Physical, 4% Hybrid, and 17% Remote job distribution.

Software Engineer - API and Platform

Socket.dev

Greenwood Village, CO • On-site

$95 - $125/hr

Other

Medical, Dental, Vision, Life, Retirement

This job post has expired today. Applications are no longer accepted.


Job description

Description

About East Daley Analytics

East Daley Analytics drives transparency in energy markets. We specialize in identifying, understanding, and monitoring operational risk across the oil and gas value chain, on the principle that no one should be surprised by an energy market event.

Anyone can gather energy data; our work is telling clients the "so what" of it. We track and forecast throughput and capacity across more than 1,200 midstream assets operated by 26 major midstream companies across crude oil, natural gas, NGLs, and the capital markets that finance them. That research reaches investors, operators, and business leaders through Energy Data Studio®, our analytics portal.

The Opportunity

We are always seeking ways to provide a cutting-edge and technologically advanced experience for our clients. This role executes this premise through the construction of an API over our data, and a live interactive front end in our customer portal that consumes it. The API is the center of the work: the contract our own pages depend on, the surface our customers’ tooling will call, and the layer that has to serve dashboard queries at extract speed.

This offering is also going to be queried by AI agents, not only by users in our front-end experience. That means a constrained, introspectable query surface an agent can reason about safely. It is a genuinely interesting design problem, and we are thrilled by the opportunity to make it come to life.

What You’ll Own

The API and the query layer. A versioned API our own pages and our customers’ tooling can depend on: resource endpoints, cursor pagination, sparse field selection, and filtering that does not fall apart as query complexity grows. You will own this contract, its versioning, and ensuring strong uptime.

Supporting the front end. Our customer-facing dashboards are moving from generated static pages to a live, interactive product including charts, maps, filtering, cross-chart interaction. A dedicated front-end engineer will own that work. Your job is to make sure the API gives them everything they need, and to be comfortable enough in the front-end codebase to read it, debug against it, and assist when it matters.

Running it in production. These dashboards are the products served to customers outside our network using the API. You will help stand up and operate what that requires: edge caching and protection, request authentication against our existing identity provider, rate limiting, observability good enough to tell you in which layer a slow request actually spent its time, and deployment that does not require a maintenance window.

Collaborate with the Data Team on SQL foundations. You will work closely with the Data Team as they optimize the database layer feeding the product. This includes stored procedures, the semantic view layer, and the filter architecture that keeps a wide multi-select query fast.

What Success Looks Like

In the first 6 months:

  • The API is something others can build on without asking you how it works: versioned, documented, self-describing, and stable enough that a new dashboard page or an agent-driven query tool can be built against it independently.
  • The migration is in place. Dashboards in the customer portal are live pages served by our own API, at response times equal to or better than the legacy versions they replaced.
  • The aggregation problem is solved structurally. The large tables that cannot be queried live today are served from pre-aggregated stores, refreshed off the request path on a cadence matched to how fresh each one needs to be.
  • The schema shared by the entire pipeline from database to HTML is enforced, changes to it are additive and coordinated, and drift at that seam is not a recurring defect.

Requirements

Minimum Qualifications

  • 3+ years of professional software engineering experience.
  • Designed and operated an API other teams consumed. Resource modeling, cursor pagination, sparse fieldsets, versioning, deprecation without breaking live clients.
  • Maintained a schema across language boundaries. Additive evolution, versioned change, no rename-and-redeploy-everything.
  • Golden-file and snapshot testing over generated output, plus the instinct for when a green suite is lying to you: silent skips, vacuous assertions, mocked-out logic.
  • Daily AI-assisted development to increase production velocity and QA/QC abilities.
  • End-to-end ownership. Ambiguous request ? shipped ? iterated. You can talk to an analyst who knows exactly what they need to see without knowing how it gets built.
  • Bachelor's in CS or a related technical field, or equivalent experience.

Preferred Qualifications

  • Agent-facing API design: MCP servers, OpenAPI-driven tool generation, runtime schema introspection.
  • JSON query DSL ? parameterized SQL. Selector-based filter/sort/aggregate, no caller-supplied SQL text.
  • SQL Server at scale: clustered and nonclustered columnstore, indexed views, incremental rollup tables, read routing, execution-plan tuning.
  • Public-facing service: CDN, WAF, JWT/OIDC validation with JWKS caching at the gateway, per-client rate limiting, cache invalidation tied to a refresh cycle.
  • Containers in production: Docker, an orchestrator (ECS, AKS, or Kubernetes), secrets manager, structured logs, metrics, distributed tracing, CI/CD.
  • Migrating consumers off a vendor BI layer onto an in-house API: extract-parity latency, feature-gap triage, parallel-run cutover.
  • Energy markets: natural gas, crude, natural gas liquids, midstream infrastructure.
  • Master's in a technical or quantitative discipline.

Compensation & Benefits

Salary range: $95,000 – $125,000, plus bonus opportunities. Full-time.

  • Medical, dental, and vision coverage with company contributions
  • 401(k) with 3% company match
  • Flexible Spending and Health Savings Account options
  • Employee Assistance and Wellness Programs
  • Life and disability coverage
  • Direct access to experienced analysts and energy professionals
  • Meaningful ownership of the platform and its roadmap
  • Exposure to proprietary energy infrastructure and regulatory data
  • Dog-friendly office environment

Please note that this job description is not designed to cover or contain a comprehensive listing of activities, duties, or responsibilities that are required of the employee for this job. Duties, responsibilities, and activities may change at any time with or without notice.

East Daley Analytics is an Equal Employment Opportunity (EEO) employer and welcomes all qualified applicants. Applicants will receive fair and impartial consideration without regard to race, sex, color, religion, national origin, age, disability, veteran status, genetic data, or other legally protected status.

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