Source Job

Colombia

  • Design, develop, and maintain scalable frontend applications using React, Next.js, TypeScript, and JavaScript.
  • Build reusable, accessible, and maintainable UI components that align with design systems.
  • Collaborate with cross-functional teams and optimize performance using profiling tools and accessibility standards.

React Next.js TypeScript JavaScript CSS

20 jobs similar to Freelance Senior UI Engineer

Jobs ranked by similarity.

Global

  • Lead end-to-end product design from discovery to delivery, including research, prototyping, and validation.
  • Conduct user research and usability testing to uncover customer needs and translate insights into impactful solutions.
  • Design accessible, responsive experiences across web and mobile, collaborating with cross-functional teams.

Jimdo is an AI-powered platform that helps self-employed people build and run successful businesses online. It is a profitable, remote-first company with over 220 employees from 50+ nationalities across 15+ countries, having helped create over 36 million websites.

Philippines India

  • Own the full sales cycle from prospecting to close in a greenfield territory.
  • Build and manage your pipeline through cold outreach via calls, email, and LinkedIn.
  • Work directly with the founder and CEO to shape the outbound sales strategy.

Bundle delivers live 1:1 leadership and manager training with expert instructors, working with enterprise and mid-market companies across manufacturing, healthcare, construction, and beyond. They are a small, early-stage company that has hit its goals six quarters in a row, with a culture of building and direct access to leadership.

Global

  • Coordinate monthly closing by giving clear instructions on transfer pricing adjustments and monitoring their execution in the ERP system.
  • Manage transfer pricing compliance and documentation across APAC and Europe, including master file, local files, and country-by-country reporting.
  • Identify process improvements, automate workflows, and lead adoption of AI tools to reduce manual effort and increase accuracy.

Aleph Holding represents the world's leading digital advertising platforms including TikTok, Amazon, and Google, operating in over 130 markets. It is a fast-growing, innovative global company with a diverse, multicultural team that values creativity and collaboration.

APAC Unlimited PTO

  • Create consistent, high-quality pipeline through cold calls, thoughtful outreach, and personalized prospecting that earns the attention of the right buyers.
  • Build outbound systems using AI, automation, enrichment, and workflow tools to create smarter, faster, and more effective outbound motions.
  • Partner closely with Account Executives to understand territories, prioritize accounts, and create opportunities that move through the sales funnel with quality.

Sprinto is an Autonomous Trust Platform that centralizes trust requirements across security frameworks, vendors, and customers. Backed by Accel, Elevation, and Blume Ventures, they've raised $31.8M in funding and are trusted by over 3,000 organizations across 75 countries.

Argentina

  • Own the full data science engine for a priority vertical, from business problem to deployed model, driving measurable ROAS.
  • Build buying models that maintain positive ROAS and quality while improving lead quality across the portfolio.
  • Establish trusted, direct partnerships with business stakeholders and identify net-new modeling opportunities.

Launch Potato is a discovery and conversion company that reaches tens of millions of people monthly through brands like FinanceBuzz, All About Cookies, and OnlyInYourState. They are a profitable, bootstrapped company with a remote-first team across 18 countries, emphasizing impact and ownership.

US

  • Provide oversight to and collaborate with nurse practitioners to ensure the highest standard of care
  • Conduct regular patient chart reviews and virtual consultations based on state requirements
  • Collaborate with clinical leadership to refine strategies and workflow processes

Seven Starling is a leading virtual provider of women's behavioral health services, specializing in perinatal mood disorders through therapy, peer support, and medication management. They partner with OBGYN clinics and major health plans, and are an early-stage team building the future of maternal mental healthcare.

US Unlimited PTO 12w maternity 12w paternity

  • Build and maintain large-scale search and data services using Elasticsearch, ClickHouse, and Solr.
  • Play a key role in evolving systems to reliably scale 10x beyond current load, including streaming data pipelines and search relevancy.
  • Collaborate across engineering through code reviews, architectural discussions, and on-call support.

Help Scout builds customer service software for relationship businesses. With over 120 employees worldwide, the company is fully remote and values ownership, curiosity, and high-quality work.

US

  • Design and deliver technical solutions for Federal customers, participating in the business development life cycle.
  • Develop system architectures, conduct trade studies, and write technical proposals.
  • Collaborate with capture and operations teams to create innovative solutions for complex challenges.

Sparksoft is a tech company that provides IT solutions to government clients, revolutionizing the way work is done. The company is recognized as a Great Place to Work, with a collaborative culture focused on innovation and excellence.

Spain Unlimited PTO

  • Protect recurring revenue through timely account-level interventions and win-back strategies.
  • Recover customers in distress by building tailored plans that address reasons for leaving.
  • Build scalable outbound motions combining predictive risk signals, digital campaigns, and targeted human outreach.

Lighthouse is an AI platform that revolutionizes commercial strategy for the hospitality industry by transforming hotel data into real-time intelligence. With over 850 teammates across 35 countries, the company fosters a collaborative, fun, and deeply committed culture focused on innovation and customer success.

Global

  • Prospect and sign high-potential affiliates, publishers, influencers, and content creators.
  • Nurture existing partnerships, run calls and demos, and manage outreach end-to-end.
  • Monitor performance, double down on what works, and partner with Marketing on campaign alignment.

Simply Wall St has evolved from a research platform into a Portfolio Command Centre used by 8 million investors across 180 countries. It is a fast-growing B2B business with a remote-first, distributed team culture.

US

  • Develop and execute a territory engagement plan for KOLs and HCPs in Duchenne muscular dystrophy and cardiomyopathy.
  • Deliver scientific presentations and support advisory boards, symposia, and investigator-initiated studies.
  • Collect field insights and provide scientific training to internal stakeholders while ensuring compliance with regulatory standards.

Capricor Therapeutics is a biotechnology company advancing cell and exosome-based therapies for rare diseases. They are a pre-commercial, rapidly scaling company with a mission-driven culture focused on scientific rigor and collaboration.

US Unlimited PTO

  • Advise on healthcare regulatory, privacy, and employment matters across clinical, operational, and commercial functions.
  • Build scalable compliance, privacy, and clinical governance infrastructure to support rapid company growth.
  • Partner with People, Clinical, and Product teams to translate legal requirements into actionable guidance and templates.

Midi Health is a virtual care clinic redefining healthcare for women in midlife, providing specialized menopause and midlife care through a remote-first model. As a high-growth digital health company, we build scalable processes and foster a dynamic, inclusive culture to support clinicians, employees, and patients nationwide.

Canada

  • Build and ship product features end-to-end.
  • Mentor fellow engineers and lead application architecture decisions.
  • Collaborate with engineers, designers, and product managers in an Agile environment.

Optro provides an AI-powered GRC Intelligence Platform to help enterprises manage risk. With over $300M ARR and serving more than 50% of the Fortune 500, the company fosters a culture of innovation and collaboration.

Slovakia

  • Develop and customize ServiceNow solutions focusing on ITSM, ServOps, and Asset Management.
  • Collaborate with stakeholders to translate requirements into scalable, maintainable solutions and manage full SDLC.
  • Mentor junior developers and stay current with ServiceNow best practices.

ConvaTec is a global medical products and technologies company focused on solutions for chronic condition management, with leading positions in Advanced Wound Care, Ostomy Care, Continence Care, and Infusion Care. With over 10,000 colleagues, they serve around 90 countries, united by a promise to be forever caring.

India

  • Architect a greenfield, multi-layer data warehouse that separates analytical workloads from production traffic.
  • Build a semantic and metrics layer to ensure consistent metrics across all dashboards and products.
  • Own data quality, governance, multi-tenancy, and traceability for a scalable data platform.

Gather AI pioneers a vision-powered platform using autonomous drones to digitize warehouse workflows, capturing real-time data to improve efficiency and safety. As a leader in the robotics industry, the company fosters a collaborative culture focused on transforming the global supply chain.

$64,000–$68,000/yr
US

  • Oversee and execute market staffing strategy through consistent Care Pro outreach and relationship building, utilizing innovative tools to create the best scheduling matches.
  • Provide exceptional service to Care Pros by being their primary point of contact, fostering relationships, and delivering actionable feedback and coaching.
  • Partner closely with the Client Manager and cross-functional teams to ensure seamless care delivery, prioritize work, and manage real-time issues.

Honor Technology is a leader in aging care innovation, providing technology and services that empower older adults to live independently. With a global franchise network and over 100,000 Care Pros, the company combines powerful technology with compassionate care to set a new standard for aging in place.

$190,800–$267,100/yr
United States

  • Own the technical design and delivery of complex frontend features across Ads Manager's creative and recommendation workflows.
  • Partner with product and design to work through ambiguous requirements and make sound product and engineering tradeoffs.
  • Raise the quality of the codebase through thoughtful architecture, testing, observability, performance work, and accessibility.

Reddit is a community of communities built on shared interests, passion, and trust. With 100,000+ active communities and approximately 126 million daily active unique visitors, Reddit is one of the internet's largest sources of information.

United States Unlimited PTO

  • Build and iterate on pro formas to support live sales cycles, partnership deals, and pricing decisions.
  • Evaluate deal economics, assumptions, and risk using business judgment alongside formulas.
  • Own RFP responses end to end, coordinating input from technical, legal, and business stakeholders to deliver clean, accurate submissions on deadline.

Pivotal Health is a technology platform that helps healthcare providers get paid fairly in an increasingly complex reimbursement landscape. It is a collaborative, low-ego team on a mission to make healthcare reimbursement fairer for providers.

US

  • Own and close new retailer partnerships, meeting or exceeding new-business quota through full-cycle selling from prospecting to contract.
  • Conduct market research and stay informed on industry trends to position ecoATM effectively in the competitive landscape.
  • Utilize Salesforce for pipeline management, forecasting, and reporting, while collaborating with internal teams to ensure successful deal handoff.

ecoATM is a technology company and pioneer of device re-commerce, operating 7,000 automated kiosks and an online marketplace. The company values its employees as its greatest strength and fosters a culture of growth, impact, and sustainability.

$135,000–$155,000/yr
Global

  • Develop project plans and execute to timelines and budget.
  • Serve as primary customer contact ensuring timely communication.
  • Ensure compliance with data onboarding protocols and operating procedures.

Beacon Biosignals is developing a leading at-home EEG platform to advance precision medicine for brain disorders. The company values asynchronous remote work and diversity, with a collaborative culture.