Freelance Senior Software Engineer Job at Seamless.AI

Freelance Senior Software Engineer

We are seeking an experienced Freelance Sr. Software Engineer; Contratista Indep...

Location

Colombia

Salary:

Not provided

Seamless.AI

Expiration Date

Until further notice

Requirements

6+ years of experience in software development
5+ years of experience with modern frontend (React.js) and backend (Node.js, Express.js) JavaScript development
Bachelor’s in computer science or related field or equivalent work experience
Fluency in both English and Spanish
Expert knowledge of modern frontend technologies such as React, ES6/7 JavaScript, Webpack, HTML, and CSS
Expert knowledge of modern back-end development and back-end JavaScript (Node.js, ExpressJS), SQL (Aurora Postgres), and AWS
Excellent communication and interpersonal skills
Strong problem-solving and analytical skills
Experience with software development tools such as GitHub and JIRA
Experience with cloud-based development and deployment, such as AWS

Job Responsibility

Provide technical expertise in the design, development, and maintenance of software products
Develop and maintain high-quality software code in alignment with project requirements
Ensure that project deliverables are completed on time, within budget, and meet quality expectations
Define technical, operational, and security requirements for software projects
Collaborate with other teams to establish and maintain best practices for software development
Offer technical guidance and recommendations to support engineering teams
Conduct code reviews to maintain software quality and adherence to best practices
Research and evaluate new technologies to enhance software development processes and efficiencies
Work with stakeholders to resolve technical challenges, troubleshoot issues, and implement solutions
Contribute to the development and maintenance of technical documentation and system guides

Freelance Senior Software Engineer

We are seeking an experienced Freelance Sr. Software Engineer; Independent Contr...

Location

Mexico

Salary:

Not provided

Seamless.AI

Expiration Date

Until further notice

Requirements

6+ years of experience in software development
5+ years of experience with modern frontend (React.js) and backend (Node.js, Express.js) JavaScript development
Bachelor’s in computer science or related field or equivalent work experience
Fluency in both English and Spanish is required

Job Responsibility

Provide technical expertise in the design, development, and maintenance of software products
Develop and maintain high-quality software code in alignment with project requirements
Ensure that project deliverables are completed on time, within budget, and meet quality expectations
Define technical, operational, and security requirements for software projects
Collaborate with other teams to establish and maintain best practices for software development
Offer technical guidance and recommendations to support engineering teams
Conduct code reviews to maintain software quality and adherence to best practices
Research and evaluate new technologies to enhance software development processes and efficiencies
Work with stakeholders to resolve technical challenges, troubleshoot issues, and implement solutions
Contribute to the development and maintenance of technical documentation and system guides

Freelance Senior Software Engineer

We are seeking an experienced Freelance Sr. Software Engineer; Independent Contr...

Location

Uruguay

Salary:

Not provided

Seamless.AI

Expiration Date

Until further notice

Requirements

6+ years of experience in software development
5+ years of experience with modern frontend (React.js) and backend (Node.js, Express.js) JavaScript development
Bachelor’s in computer science or related field or equivalent work experience
Fluency in both English and Spanish
Expert knowledge of modern frontend technologies such as React, ES6/7 JavaScript, Webpack, HTML, and CSS
Expert knowledge of modern back-end development and back-end JavaScript (Node.js, ExpressJS), SQL (Aurora Postgres), and AWS
Excellent communication and interpersonal skills
Strong problem-solving and analytical skills
Experience with software development tools such as GitHub and JIRA
Experience with cloud-based development and deployment, such as AWS

Job Responsibility

Provide technical expertise in the design, development, and maintenance of software products
Develop and maintain high-quality software code in alignment with project requirements
Ensure that project deliverables are completed on time, within budget, and meet quality expectations
Define technical, operational, and security requirements for software projects
Collaborate with other teams to establish and maintain best practices for software development
Offer technical guidance and recommendations to support engineering teams
Conduct code reviews to maintain software quality and adherence to best practices
Research and evaluate new technologies to enhance software development processes and efficiencies
Work with stakeholders to resolve technical challenges, troubleshoot issues, and implement solutions
Contribute to the development and maintenance of technical documentation and system guides

Senior C++ Engineer - AI Training

As a Senior C++ Engineer, you will work remotely on an hourly paid basis to revi...

Location

Salary:

20.00 USD / Hour

Braintrust

Expiration Date

Until further notice

Requirements

Bachelor’s degree or higher in Computer Science, Electrical/Computer Engineering, or a closely related technical field
7+ years of professional experience developing production software in C++ for systems, performance-critical, or large-scale applications
Expert-level proficiency in modern C++ (C++11 and later), including templates, move semantics, smart pointers, and the STL
Strong background in systems programming concepts such as concurrency, operating systems, low-level performance optimization, and memory management
Hands-on experience with C++ build systems, compilers, linkers, debuggers, and profiling or analysis tools
Minimum C1 English proficiency (written and spoken), with the ability to write clear technical explanations and follow detailed English-language guidelines
Proven experience conducting detailed C++ code reviews and enforcing coding standards for safety, performance, and maintainability
Comfort working with version control, CI/CD workflows, and automated testing frameworks in modern C++ projects

Job Responsibility

Review AI-generated C++ code, systems designs, and technical explanations
Generate high-quality reference implementations and step-by-step reasoning for complex engineering problems
Assess solutions for accuracy, clarity, safety, and adherence to the prompt
Identify errors in logic, memory handling, concurrency, or performance
Fact-check technical information
Write high-quality explanations and model solutions that demonstrate correct methods
Rate and compare multiple AI responses based on correctness and reasoning quality
Develop AI Training Content: Create detailed prompts in various topics and responses to guide AI learning, ensuring the models reflect a comprehensive understanding of diverse subjects
Optimize AI Performance: Evaluate and rank AI responses to enhance the model's accuracy, fluency, and contextual relevance
Ensure Model Integrity: Test AI models for potential inaccuracies or biases, validating their reliability across use cases

What we offer

Get rewarded with BTRST, Braintrust's cryptotoken, for inviting talent, taking a class—even signing up! Use token rewards to help shape the future of the platform

Parttime

Freelance Senior User Interface Designer

We are inviting a Freelance Senior UI Designer to join our creative team in crea...

Location

China , Shanghai

Salary:

Not provided

Mobile Now Group

Expiration Date

Until further notice

Requirements

English writing and speaking is mandatory
At least 2 years experience working as a UI designer or in a related field
Experience defining visual & user interface guidelines and building comprehensive designs for applications or software
Experience with production design execution and working with implementation, realizing designs
Knowledge of Sketch, Principle, Zeplin, Keynote, After eﬀects, Photoshop, Illustrator, or equivalents
Proactive, accountable, and detail oriented
Demonstrated ability to critical think, concept, and strategize
Multi-disciplinary experience, able-communicator, and organized

Job Responsibility

Understand the needs of the client and/or project before developing UI and visual foundations
Design compelling interfaces that best reflect our clients’ brand image
Conduct brand studies, trendscapes, and design synthesis as part of the foundational design process
Work in a multi-disciplinary setting, with UX designers, project managers, engineers, and quality analysts
Create pictograms, illustrations, and animations as part of user interface designs
Present and lead clients through iterative workshops
Co-lead the collaborative process with front end engineering on the design-to-dev hand-oﬀ
Conduct build reviews to ensure that implementation accurately reflects designs

Vice President, Design (3D)

We are seeking a Vice President of Design to serve as a senior executive leader ...

Location

United States , New York

Salary:

250000.00 - 290000.00 USD / Year

Cella

Expiration Date

Until further notice

Requirements

10+ years of design experience within experiential, environmental, or architectural roles, with at least 4 years in a senior leadership position (VP or Director level) at a creative agency or design studio
Deep expertise in 3D/spatial design is mandatory
advanced proficiency in modeling and rendering software such as SketchUp, Rhino, Vray, or Unreal Engine is required
Comprehensive understanding of fabrication processes, materials, and production workflows specifically for large-scale brand experiences and physical builds
Exceptional ability to articulate complex creative visions to executive-level stakeholders and persuade clients through evocative storytelling and visuals
A robust portfolio demonstrating a high level of innovation and spatial storytelling rather than just traditional 2D graphic design
Must be based in one of the agency's primary hubs (Los Angeles, San Francisco, or New York City) and willing to adhere to a hybrid in-office schedule (2 days per week)

Job Responsibility

Lead the overall vision and execution of the design function, ensuring all outputs across spatial, environmental, and integrated disciplines meet the highest standards of craft
Champion the integration of creative technology and future-focused design trends to maintain a competitive edge in the experiential landscape
Act as a strategic design consultant for high-profile clients, translating complex business objectives into industry-defining physical and visual solutions
Lead and mentor a multidisciplinary team of 10+, fostering a culture of accountability, growth, and creative curiosity
Collaborate on hiring strategies to attract top-tier talent and manage an extensive national network of freelance specialists and 3D partners
Partner with Production, Strategy, and Account teams to ensure design integrity is maintained from initial sketch through final on-site installation
Refine departmental workflows, templates, and software standards (including 3D modeling and rendering platforms) to improve efficiency and output quality
Oversee the technical vetting of materials and fabrication processes, ensuring ambitious concepts are delivered on time, on budget, and within structural requirements
Direct the design of compelling pitch materials and environmental visualizations to win new business and expand the agency's portfolio

What we offer

medical
prescription
dental
vision
AD&D
life insurance offerings
short-term disability
401K plan

Fulltime

New

Associate Quality Control (Analytical)

Amgen is one of the world's leading independent biotechnology companies. For ove...

Location

Singapore , Singapore

Salary:

Not provided

Amgen

Expiration Date

Until further notice

Requirements

Bachelor's Degree in Chemistry, Biochemistry, Life Science or related technological field and 2 years of directly related experience OR Associate's Degree in Chemistry, Biochemistry, Life Science or related technological field and 4 years of directly related experience OR High School Diploma in Chemistry, Biochemistry, Life Science or related technological field / GED and 6 years of directly related experience
1-2 years of relevant laboratory experience in the commercial manufacturing environment within the pharmaceutical or biopharmaceutical industry and analytical testing experience preferred
Knowledge and understanding of GMP pharmaceutical production, pharmaceutical plant operation and associated testing methods
Experience with Quality Control testing and laboratory operations for common testing methods and equipment (e.g. including but not limited to UPLC, HPLC, LC-MS, GC-HS, LOD, Auto-titration, KF, Optical Rotation, wet chemistry, FT-IR, pH, conductivity, TOC, Potency, ELISA, Capillary Electrophoresis, DNA Testing)
Good communication skills (technical writing and verbal communication/ presentation)
Interact effectively with variety of communication and working styles and ability to work well in teams
Ability to manage multiple simultaneous activities in a rapidly changing environment
Problem solving skills and troubleshooting skills with the ability to apply logic and assess data to reach decisions and solutions related to compliance and product quality.

Job Responsibility

Perform analytical testing of in-process control, drug substance intermediate, final release, stability and plant cleaning samples in a GMP pharmaceutical environment
Support laboratory operations including but not limited to equipment qualification, calibration, cleaning and maintenance, reagent/ buffer preparation
Responsible for maintenance of chemicals and consumables inventory
Ensure proper handling, storage, disposal of all chemicals used in the lab
Responsible for laboratory housekeeping and document archival duties
Participate in laboratory investigations and assist in timely closure of investigations, CAPAs and deviations
Participate in method verification and method validation/ transfer for new product introduction (when required)
Perform review of laboratory data/ records
Assist in SOP/ protocol/ report writing
Assist in periodic review of laboratory procedures and risk assessment

What we offer

Vast opportunities to learn and move up and across our global organization
Diverse and inclusive community of belonging, where teammates are empowered to bring ideas to the table and act
Generous Total Rewards Plan comprising health, finance and wealth, work/life balance, and career benefits

Fulltime

New

Plant & Tool Hire Driver (Class 2)

Location

United Kingdom , Flint

Salary:

Not provided

360 Resourcing Solutions

Expiration Date

Until further notice

Requirements

Positive attitude
Class 2 driving licence

Job Responsibility

Delivering, collecting, and distributing hire equipment using our company vehicles
Carrying out routine equipment and vehicle checks to keep everything running safely and efficiently
Serving our customers - safely, professionally and with a friendly approach
Following all transport procedures and keeping hire fleet maintenance records up to date

What we offer

23 days’ holiday, plus bank holidays (31 days per year)
Company bonus scheme, based on performance
Contributory pension and life assurance
Discounts on high street retailers, supermarkets, restaurants, gyms and cinemas
Colleague discount across our group brands
Attraction and travel discounts
Training and development programmes to support your growth
On-the-job training and opportunities to work towards recognised qualifications, including apprenticeships
Support to gain HIAB certification

Fulltime

Freelance Senior Software Engineer

Seamless.AI

Location:
Costa Rica

Category:
IT - Software Development

Contract Type:
B2B

Salary:

Job Description:

Job Responsibility:

Requirements:

Additional Information:

Job Posted:
April 02, 2025

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Our AI answers in your language

Freelance Senior Software Engineer

Seamless.AI

Location:Costa Rica

Category:IT - Software Development

Contract Type:B2B

Salary:

Job Description:

Job Responsibility:

Requirements:

Additional Information:

Job Posted:April 02, 2025

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