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EU
.NET Developer
Experis USA
Madison, WI
- $49 USD / hour
Our client, a public-sector organization, is seeking a .NET Web Developer II to join their team. As a .NET Web Developer II, you will be part of a project team supporting a high-profile web…
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EU
Platform Infrastructure & Optics Software Engineer
Experis USA
San Jose, CA
- $45 to $50 USD / hour
Design and implement system-level software using C, with strong attention to memory management and performance.
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Senior Scientist
Experis USA
Lawrence Township, NJ
Design, execute, and analyze LCMS, SEC, and other experiments to assess physicochemical properties of antibody and non-antibody protein reagents.
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AI Automation Engineer
Experis USA
Bethesda, MD
Design, prototype, develop, integrate, and deploy AI-enabled and automation solutions that address defined business and operational needs.
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EU
Jira Service Management Specialist
Experis USA
Madison, WI
- $55 to $58 USD / hour
…Management Platform (ITSM) effort supporting the Systems and Data Management Section. The ideal candidate will have a strong drive to improve service delivery, a practical approach to…
Added 1 min ago
EW
Senior Security Engineer
East West Bank
Dallas, TX · San Marino, CA
- $115,000 USD / year
…organization’s information assets. This role is responsible for the design, implementation, and continuous improvement of Security Information and Event Management infrastructure and data…
Added 1 min ago
Director of Membership (Members Club)
AccorCorpo
Key Biscayne, FL
Design and execute targeted member acquisition campaigns in collaboration with the Marketing Manager - private events, member-bring-a-guest initiatives, lifestyle previews, and community…
Added 1 min ago
Software Engineer - Load Balancing
Cloudflare
Austin, TX · NY · San Francisco, CA
Design, implement, and maintain the software systems that comprise Cloudflare’s Load Balancing product.
Added 1 min ago
SAP - OTC - Senior Manager - Consulting - Location OPEN
EY
Kansas City, MO
…EY SAP service line capabilities (Supply Chain, FICO, BPC, Data & Analytics, Customer, Tech/Arch and SuccessFactors) that are focused on helping clients improve performance and increase…
Added 1 min ago
SAP - OTC - Senior Manager - Consulting - Location OPEN
EY
Jefferson City, MO
…EY SAP service line capabilities (Supply Chain, FICO, BPC, Data & Analytics, Customer, Tech/Arch and SuccessFactors) that are focused on helping clients improve performance and increase…
Added 1 min ago
SAP - OTC - Senior Manager - Consulting - Location OPEN
EY
Saint Louis, MO
…EY SAP service line capabilities (Supply Chain, FICO, BPC, Data & Analytics, Customer, Tech/Arch and SuccessFactors) that are focused on helping clients improve performance and increase…
Added 2 mins ago
Analyst, SEM
Williams-Sonoma
San Francisco, CA
Confidence with analyzing large data sets and making recommendations/developing and executing strategies from analysis and test results
Added 2 mins ago
Analyst, Cust Relation Marketing - Rejuvenation
Williams-Sonoma
San Francisco, CA
Leverage available analytic tools to gather data and make marketing strategy and investment decisions.
Added 2 mins ago
Product Manager, Workload Connectivity
Tailscale
Remote, United States
You'll work closely with engineering, design, and go-to-market teams to make Tailscale the obvious choice for workload connectivity, from a developer's first integration to production…
Added 2 mins ago
Product Manager, Workload Connectivity
Tailscale
Remote, United States
You'll work closely with engineering, design, and go-to-market teams to make Tailscale the obvious choice for workload connectivity, from a developer's first integration to production…
Added 2 mins ago
Product Engineer Materials
Ford Global
Dearborn, MI
Product Development uses design thinking & user experience methods to deliver breakthrough products and services that delight our customers. We bring innovative, exciting, and sustainable…
Added 2 mins ago
Sales Manager, Military & Government Programs
Teledyne Controls, LLC
Remote, United States
…air and water quality environmental monitoring, electronics design and development, oceanographic research, deepwater oil and gas exploration and production, medical imaging and…
Added 2 mins ago
Director, Data Strategy and Operations
Google
Austin, TX · Atlanta, GA · Boulder, CO · Chicago, IL
Serve as a manager of a multi-tiered global Data S&O organization across international hubs, establishing organizational design standards, spans of control, and cross-regional talent…
Added 3 mins ago
Sr. Analyst, Supply Chain Strategy & Analytics
CES CarMax Enterprise Services, LLC
United States
…serving as thought leaders who provide strategic direction and data-driven insights that guide decision-making across our supply chain…
Added 3 mins ago
Production Lead
Decostar Industries Inc.
Piedmont, SC
…provides everything needed, from materials development and design through manufacturing and assembly, to help automakers create sleek, state-of-the-art vehicles across the…
Added 3 mins ago
IT Offensive Security Engineer III (Must Reside in Texas)
Randolph-Brooks Federal Credit Union
United States
Design engagement plans, rules of engagement, safety controls, communications, deconfliction, escalation paths, data-handling requirements, and technical workstreams.
Added 3 mins ago
IT Vulnerability Engineer III (Must Reside in Texas)
Randolph-Brooks Federal Credit Union
United States
Design and maintain production-quality tooling, integrations, data pipelines, and automation for discovery, enrichment, normalization, deduplication, validation, ticketing, orchestration,…
Added 4 mins ago
Lead Associate
WTW
Chicago, IL
…solutions tailored to client needs. This is underpinned by data and analytics through a balanced matrix of global lines of business and local Property and Casualty businesses, across four…
Added 4 mins ago
Associate Director
WTW
New York, NY · NY
…performance. Our solutions incorporate proprietary market benchmarking data and software to support compensation…
Added 4 mins ago
Associate
WTW
New York, NY · NY
The Health & Benefits (‘H&B’) business provides strategy and design consulting, plan management service and support, broking and administration across the full spectrum of health, wellbeing…

Seamless

Senior Full Stack Software Engineer

Remote, United States

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Job details

Posting language: English
Posted: Nov 6, 2026

Original job description

About Seamless Seamless is building the future of AI-powered revenue generation. Sales professionals use our platform to identify prospective buyers, improve contact and company data, and create pipeline more efficiently. By combining proprietary data, artificial intelligence, and modern go-to-market technology, Seamless helps organizations connect with the right people and accelerate revenue growth. We are continuing to invest in our platform, our AI capabilities, and the team required to define the next generation of sales technology. Equal Employment Opportunity Seamless is an equal opportunity employer. We do not discriminate on the basis of race, religion, color, national origin, sex, gender, sexual orientation, age, marital status, veteran status, disability, or any other characteristic protected by applicable law. Visa sponsorship is not included in our hiring package. Applicants must be authorized to work in the United States.

Why Seamless Seamless is building the future of AI-powered sales and revenue technology. Our platform brings together real-time B2B data, artificial intelligence, sales engagement, enrichment, automation, buyer signals, AI agents, APIs, integrations, and workflow capabilities to help revenue teams find the right buyers, improve contact and company data, personalize outreach, create pipeline, and convert more opportunities into revenue. As a Senior Full Stack Software Engineer at Seamless, you will have the opportunity to:

Own meaningful features from concept through production, with a direct impact on the experience of our users.
Build scalable, high-performing applications and services that support our data search engine and social profiling platform.
Work across our web application, Chrome extension, and connected services rather than being limited to one part of the stack.
Shape technical solutions with autonomy, collaborating closely with product managers and a lean remote engineering team.
Ship quality code iteratively, solve customer problems, and help evolve a platform that handles large volumes of data and concurrent requests.

At Seamless, you’ll work with a team that values simple solutions, thoughtful engineering, strong ownership, and the ability to deliver meaningful results. The Opportunity You’ll join Seamless’s Technology organization as part of a lean, full stack engineering team. Your work will help advance our data search engine and social profiling platform, supporting the tools customers use to find and connect with the right buyers. You’ll take ownership of features from early requirements through deployment and post-launch improvement. Our architecture includes a customer-facing web application, a Chrome extension, and connected services, giving you the opportunity to contribute across the product and its underlying systems. You’ll build responsive interfaces with React and modern JavaScript while designing scalable backend services that handle large datasets and concurrent requests. You’ll collaborate with product and engineering partners, make sound technical decisions, and ship practical solutions without unnecessary complexity. What You’ll Own

Own full stack projects and deliverables from concept through production.
Build scalable, performant user interfaces using React, ES6/7 JavaScript, Webpack, HTML, CSS, and related modern tools.
Design, develop, and implement microservices that handle large volumes of concurrent requests and data.
Create JSON schemas and user experience workflows that support business processes involving hundreds of millions of records.
Translate customer requirements into practical technical solutions that address user needs.
Ship high-quality, finished code frequently through iterative development and MVP delivery.
Develop complete features with substantial autonomy while communicating clearly with remote teammates.
Drive end-to-end development from initial brief through post-launch analysis in partnership with product managers and technical stakeholders.
Support and improve experiences across web applications, browser extensions, and mobile platforms.

What You’ll Bring

Required Qualifications:

Ideally 5+ years of experience building high-quality, cloud-based web applications.
5+ years of expertise in modern frontend technologies, including React, ES6/7 JavaScript, Webpack, HTML, and CSS.
2+ years of experience with backend technologies including Node.js, Express, Postgres, and AWS.
Experience working with large datasets using S3, Athena, OpenSearch, or similar services.
Strong SQL skills and an analytical approach to problem-solving.
Experience working with internal APIs and integrating third-party APIs.
Experience with React Hooks and other modern React features.
Ability to create clear documentation for new and existing features and functionality.
Experience developing software using AI-assisted tools such as Claude and Cursor.

Preferred Qualifications:

Bachelor’s degree.
UI/UX design specialization.
Experience developing Chrome extensions.
Experience with web scraping.

Benefits

At Seamless, we invest in our employees by offering a comprehensive benefits package designed to support health, financial well-being, work-life balance, and professional growth. Eligible employees have access to benefits that currently include:

Medical, dental, and vision insurance
Health Savings Account and Flexible Spending Account options
401(k) retirement plan with company matching contributions
Company-paid life insurance, accidental death and dismemberment, and short-term disability coverage
Voluntary supplemental insurance options
Employee Assistance Program
Annual wellness reimbursement
Paid time off, company holidays, and paid parental leave for birthing and non-birthing parents
Remote-first work environment
Employee discount and perks program
Professional development, ongoing learning, coaching, and career-growth opportunities

Benefits are subject to eligibility requirements and applicable plan documents and may be modified by Seamless at any time.

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More about this job

Skills

Search engines
React
JavaScript
webpack
HTML
CSS
Microservices
Business processes
Iterative development
Node.js
AWS
SQL
Problem solving
Documentation
UX design

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