Pipeline run
5e9ffb2e-53ab-4316-9ffa-894f8aa13c26
Pipeline LLM cost (USD)
API 1: $0.0065
API 2: $0.0000
API 3: $0.0000
Total: $0.0065
Client output enrichment
v2 Skill cluster · Nature of work · AI index · Tech stack maturity · Evidence · KRA description
role baseline loaded
sources · ai_index: jd · nature_of_work: jd · tech_stack_maturity: jd
Nature of work
· Responsive UI component development
Build React.js user-facing features and reusable components from designs/wireframes, then tune them for performance and compatibility across browsers/devices while working with JS, DOM, and React workflows like Redux.
""developing new user-facing features using React.js""
Tech stack maturity
Mainstream Modern
JavaScript and React.js are widely adopted, current mainstream frontend technologies rather than legacy or bleeding-edge stack choices.
AI index (0 = no AI use, 5 = totally AI-dependent · v2.1)
0.00 / 5
· Title match
· Has AI skill
· AI skill (primary)
· AI skill (secondary)
· On AI team
· Builds AI products
vocab breakdown (legacy)
Assistants (×1):
—
Frameworks (×2):
—
Models / concepts (×3):
—
Evidence — skills matched in JD (13)
React.js
JavaScript
DOM
Flux
Redux
ECMAScript
Immutable.js
Isomorphic React
REST
JSON Web Token
Babel
Webpack
npm
Skill cluster (5 dimension groups, role-scoped)
Build Tooling and Bundlers
Babel
Webpack
JavaScript and TypeScript
JavaScript
ECMAScript
Integration Protocols & Standards
REST
State Management Patterns
Redux
Cross-cutting / unaligned
React.js
DOM
Flux
Immutable.js
Isomorphic React
JSON Web Token
npm
Show KRA description ↓
We are looking for a great developer who is proficient with React.js. Your primary focus might vary from: (1) developing new user-facing features using React.js, (2) translating designs and wireframes into high-quality code, (3) building reusable components and front-end libraries for future use, and (4) optimizing components for maximum performance across a vast array of web-capable devices and browsers. A commitment to collaborative problem solving, sophisticated design, and quality product is essential.
3+ years of experience in software development
Strong proficiency in JavaScript, including DOM manipulation and the JavaScript object model
Thorough understanding of React.js and its core principles
Experience with popular React.js workflows (such as Flux or Redux)
Familiarity with newer specifications of EcmaScript
Experience with data structure libraries (e.g., Immutable.js)
Knowledge of isomorphic React is a plus
Familiarity with RESTful APIs
Knowledge of modern authorization mechanisms, such as JSON Web Token
Familiarity with modern front-end build pipelines and tools
Experience with common front-end development tools such as Babel, Webpack, NPM, etc.
Ability to understand business requirements and translate them into technical requirements
A knack for benchmarking and optimization
Experience with system architecture or leading a software team is a strong advantage
Full-time availability is a strong advantage
Signals
Skill
full-stack-engineer
0.33
Alias
frontend-engineer
1.00
KRA
frontend-engineer
0.53
Post-classification
Centroidupdated · n=249
Alias collision log#582
New-role queue—
New skills captured6
New KRA captured—
Captured for admin review
DOM
primary
↔
Frontend Developer
pending
Flux
↔
Frontend Developer
pending
Immutable.js
↔
Frontend Developer
pending
Isomorphic React
↔
Frontend Developer
pending
JSON Web Token
↔
Frontend Developer
pending
npm
↔
Frontend Developer
pending
Status:
extract_from_jd_done
Created: 2026-05-27T15:03:00.522493Z
Updated: 2026-06-12T16:54:38.245395Z
Flow
Current 3-step pipeline
1 POST /skills/extract-from-jd
2 POST /skills/extract-details
3 POST /skills/final-role-output
Role
Chosen role & resolution
No chosen role stored for this run.
Job description
About The Job Toptal developers work with speed and efficiency to deliver the highest quality of work. We are looking for someone who is passionate about their client’s business, and ready to work on exciting projects with Fortune 500 companies and Silicon Valley startups, with great rates and zero hassles. If you are looking for a place to advance your career, enhance your skill set, and build connections around the globe, Toptal is right for you. About Toptal Toptal is an exclusive network of top freelancers from around the world. Fortune 500 companies and Silicon Valley startups hire Toptal for their most important projects. Toptal is one of the fastest-growing fully remote networks and empowers freelance software developers, designers, finance experts, product managers, and project managers worldwide to grow and excel in their freelance careers. Toptal clients vary in sizes and industries, from enterprise organizations and big tech companies to Silicon Valley startups and renowned universities. Once you enter the network, our matchers will contact you with project opportunities that fit your expertise and preferences. We have experts in over 120 countries who get to work remotely on projects that meet their career ambitions. About The Role We are looking for a great developer who is proficient with React.js. Your primary focus might vary from: (1) developing new user-facing features using React.js, (2) translating designs and wireframes into high-quality code, (3) building reusable components and front-end libraries for future use, and (4) optimizing components for maximum performance across a vast array of web-capable devices and browsers. A commitment to collaborative problem solving, sophisticated design, and quality product is essential. Requirements 3+ years of experience in software development Strong proficiency in JavaScript, including DOM manipulation and the JavaScript object model Thorough understanding of React.js and its core principles Experience with popular React.js workflows (such as Flux or Redux) Familiarity with newer specifications of EcmaScript Experience with data structure libraries (e.g., Immutable.js) Knowledge of isomorphic React is a plus Familiarity with RESTful APIs Knowledge of modern authorization mechanisms, such as JSON Web Token Familiarity with modern front-end build pipelines and tools Experience with common front-end development tools such as Babel, Webpack, NPM, etc. Ability to understand business requirements and translate them into technical requirements A knack for benchmarking and optimization Experience with system architecture or leading a software team is a strong advantage Full-time availability is a strong advantage If you’re interested in pursuing an engaging career working on full-time freelance jobs for exclusive clients, take the next step by clicking apply and filling out the short form to get started. #RemoteJobReact
Skills from this JD
Each row merges API 1 extraction, API 2 library match / v3 orchestration (dimensions + locked dims), and API 3 persistence tags.
React.js
Primary
No API 2 row (run stopped after API 1 or history missing)
JavaScript
Primary
No API 2 row (run stopped after API 1 or history missing)
DOM
Primary
No API 2 row (run stopped after API 1 or history missing)
Flux
Secondary
No API 2 row (run stopped after API 1 or history missing)
Redux
Secondary
No API 2 row (run stopped after API 1 or history missing)
ECMAScript
Secondary
No API 2 row (run stopped after API 1 or history missing)
Immutable.js
Secondary
No API 2 row (run stopped after API 1 or history missing)
Isomorphic React
Secondary
No API 2 row (run stopped after API 1 or history missing)
REST
Secondary
No API 2 row (run stopped after API 1 or history missing)
JSON Web Token
Secondary
No API 2 row (run stopped after API 1 or history missing)
Babel
Secondary
No API 2 row (run stopped after API 1 or history missing)
Webpack
Secondary
No API 2 row (run stopped after API 1 or history missing)
npm
Secondary
No API 2 row (run stopped after API 1 or history missing)
Library artifacts (this run)
No artifact rows for this run.
nano JD Parser — gpt-4.1-nano click to toggle
RoleDeveloper
CompanyToptal
Experience3+ years of experience in software development
DomainIT Services & Consulting
Location
Remote
(remote)
JD type
pass
Show raw JSON
{
"JD_type": "pass",
"about_company": {
"source_marker": {
"first_5_words": "Toptal is an exclusive network",
"last_5_words": "in their freelance careers."
},
"text": "Toptal is an exclusive network of top freelancers from around the world. Fortune 500 companies and Silicon Valley startups hire Toptal for their most important projects. Toptal is one of the fastest-growing fully remote networks and empowers freelance software developers, designers, finance experts, product managers, and project managers worldwide to grow and excel in their freelance careers.",
"word_count": 64
},
"certifications": [],
"company_name": "Toptal",
"ctc": null,
"domain": {
"primary": {
"aliases": [
"Freelance",
"Remote Work"
],
"domain": "IT Services \u0026 Consulting"
},
"secondary": null
},
"education": [],
"experience": {
"max": null,
"min": 3,
"raw": "3+ years of experience in software development"
},
"job_locations": [
{
"aliases": [],
"city": null,
"country": "Remote",
"state": null,
"work_mode": "remote"
}
],
"role": "Developer",
"role_aliases": [
"Software Developer",
"React Developer",
"Frontend Developer"
],
"role_archetype": "Engineering",
"roles_and_responsibilities": [
{
"bullet_count": 0,
"heading": "About The Role",
"heading_was_present": true,
"source_marker": {
"first_5_words": "We are looking for a",
"last_5_words": "and quality product is essential."
},
"text": "We are looking for a great developer who is proficient with React.js. Your primary focus might vary from: (1) developing new user-facing features using React.js, (2) translating designs and wireframes into high-quality code, (3) building reusable components and front-end libraries for future use, and (4) optimizing components for maximum performance across a vast array of web-capable devices and browsers. A commitment to collaborative problem solving, sophisticated design, and quality product is essential.",
"word_count": 66
},
{
"bullet_count": 13,
"heading": "Requirements",
"heading_was_present": true,
"source_marker": {
"first_5_words": "3+ years of experience in",
"last_5_words": "is a strong advantage."
},
"text": "3+ years of experience in software development\nStrong proficiency in JavaScript, including DOM manipulation and the JavaScript object model\nThorough understanding of React.js and its core principles\nExperience with popular React.js workflows (such as Flux or Redux)\nFamiliarity with newer specifications of EcmaScript\nExperience with data structure libraries (e.g., Immutable.js)\nKnowledge of isomorphic React is a plus\nFamiliarity with RESTful APIs\nKnowledge of modern authorization mechanisms, such as JSON Web Token\nFamiliarity with modern front-end build pipelines and tools\nExperience with common front-end development tools such as Babel, Webpack, NPM, etc.\nAbility to understand business requirements and translate them into technical requirements\nA knack for benchmarking and optimization\nExperience with system architecture or leading a software team is a strong advantage\nFull-time availability is a strong advantage",
"word_count": 139
}
],
"urls": []
}
API 1 — extract-from-jd click to toggle
{
"final_skills": [
{
"is_primary": true,
"skill_name": "React.js"
},
{
"is_primary": true,
"skill_name": "JavaScript"
},
{
"is_primary": true,
"skill_name": "DOM"
},
{
"is_primary": false,
"skill_name": "Flux"
},
{
"is_primary": false,
"skill_name": "Redux"
},
{
"is_primary": false,
"skill_name": "ECMAScript"
},
{
"is_primary": false,
"skill_name": "Immutable.js"
},
{
"is_primary": false,
"skill_name": "Isomorphic React"
},
{
"is_primary": false,
"skill_name": "REST"
},
{
"is_primary": false,
"skill_name": "JSON Web Token"
},
{
"is_primary": false,
"skill_name": "Babel"
},
{
"is_primary": false,
"skill_name": "Webpack"
},
{
"is_primary": false,
"skill_name": "npm"
}
],
"jd_role": {
"display_name": "Developer",
"rationale": null,
"role_aliases": [
"Software Developer",
"React Developer",
"Frontend Developer"
],
"role_archetype": "Engineering",
"slug": ""
},
"nano_parsed": {
"JD_type": "pass",
"about_company": {
"source_marker": {
"first_5_words": "Toptal is an exclusive network",
"last_5_words": "in their freelance careers."
},
"text": "Toptal is an exclusive network of top freelancers from around the world. Fortune 500 companies and Silicon Valley startups hire Toptal for their most important projects. Toptal is one of the fastest-growing fully remote networks and empowers freelance software developers, designers, finance experts, product managers, and project managers worldwide to grow and excel in their freelance careers.",
"word_count": 64
},
"certifications": [],
"company_name": "Toptal",
"ctc": null,
"domain": {
"primary": {
"aliases": [
"Freelance",
"Remote Work"
],
"domain": "IT Services \u0026 Consulting"
},
"secondary": null
},
"education": [],
"experience": {
"max": null,
"min": 3,
"raw": "3+ years of experience in software development"
},
"job_locations": [
{
"aliases": [],
"city": null,
"country": "Remote",
"state": null,
"work_mode": "remote"
}
],
"role": "Developer",
"role_aliases": [
"Software Developer",
"React Developer",
"Frontend Developer"
],
"role_archetype": "Engineering",
"roles_and_responsibilities": [
{
"bullet_count": 0,
"heading": "About The Role",
"heading_was_present": true,
"source_marker": {
"first_5_words": "We are looking for a",
"last_5_words": "and quality product is essential."
},
"text": "We are looking for a great developer who is proficient with React.js. Your primary focus might vary from: (1) developing new user-facing features using React.js, (2) translating designs and wireframes into high-quality code, (3) building reusable components and front-end libraries for future use, and (4) optimizing components for maximum performance across a vast array of web-capable devices and browsers. A commitment to collaborative problem solving, sophisticated design, and quality product is essential.",
"word_count": 66
},
{
"bullet_count": 13,
"heading": "Requirements",
"heading_was_present": true,
"source_marker": {
"first_5_words": "3+ years of experience in",
"last_5_words": "is a strong advantage."
},
"text": "3+ years of experience in software development\nStrong proficiency in JavaScript, including DOM manipulation and the JavaScript object model\nThorough understanding of React.js and its core principles\nExperience with popular React.js workflows (such as Flux or Redux)\nFamiliarity with newer specifications of EcmaScript\nExperience with data structure libraries (e.g., Immutable.js)\nKnowledge of isomorphic React is a plus\nFamiliarity with RESTful APIs\nKnowledge of modern authorization mechanisms, such as JSON Web Token\nFamiliarity with modern front-end build pipelines and tools\nExperience with common front-end development tools such as Babel, Webpack, NPM, etc.\nAbility to understand business requirements and translate them into technical requirements\nA knack for benchmarking and optimization\nExperience with system architecture or leading a software team is a strong advantage\nFull-time availability is a strong advantage",
"word_count": 139
}
],
"urls": []
},
"rejected": false,
"rejection_reason": null,
"run_id": "5e9ffb2e-53ab-4316-9ffa-894f8aa13c26",
"stage3_signals": {
"alias_found": true,
"alias_match_roles": [
{
"display_name": "Frontend Developer",
"kra_matches": null,
"matched_count": null,
"matched_skills": null,
"role_id": 7,
"score": 1.0,
"slug": "frontend-engineer",
"total_count": null
},
{
"display_name": "Web Developer",
"kra_matches": null,
"matched_count": null,
"matched_skills": null,
"role_id": 25,
"score": 1.0,
"slug": "web-developer",
"total_count": null
},
{
"display_name": "React Frontend Developer",
"kra_matches": null,
"matched_count": null,
"matched_skills": null,
"role_id": 89,
"score": 1.0,
"slug": "react-frontend-developer",
"total_count": null
},
{
"display_name": "Frontend Developer",
"kra_matches": null,
"matched_count": null,
"matched_skills": null,
"role_id": 439,
"score": 1.0,
"slug": "frontend-developer",
"total_count": null
}
],
"kra_match_roles": [
{
"display_name": "Frontend Developer",
"kra_matches": [
{
"kra_text": "Builds responsive user interfaces and interactive web components using React, Vue, or Angular with TypeScript, HTML5, and modern CSS for browser-based applications.",
"sentence": "Your primary focus might vary from: (1) developing new user-facing features using React.js, (2) translating designs and wireframes into high-quality code, (3) building reusable components and front-end libraries for future use, and (4) optimizing components for maximum performance across a vast array of web-capable devices and browsers.",
"similarity": 0.6411
},
{
"kra_text": "Builds responsive user interfaces and interactive web components using React, Vue, or Angular with TypeScript, HTML5, and modern CSS for browser-based applications.",
"sentence": "We are looking for a great developer who is proficient with React.js.",
"similarity": 0.4824
},
{
"kra_text": "Builds responsive user interfaces and interactive web components using React, Vue, or Angular with TypeScript, HTML5, and modern CSS for browser-based applications.",
"sentence": "Thorough understanding of React.js and its core principles",
"similarity": 0.4737
}
],
"matched_count": null,
"matched_skills": null,
"role_id": 7,
"score": 0.5324,
"slug": "frontend-engineer",
"total_count": null
},
{
"display_name": "Flutter Developer",
"kra_matches": [
{
"kra_text": "collaborate with design, product, and backend teams",
"sentence": "A commitment to collaborative problem solving, sophisticated design, and quality product is essential.",
"similarity": 0.5485
},
{
"kra_text": "optimize responsiveness and performance",
"sentence": "A knack for benchmarking and optimization",
"similarity": 0.5089
},
{
"kra_text": "collaborate with design, product, and backend teams",
"sentence": "Your primary focus might vary from: (1) developing new user-facing features using React.js, (2) translating designs and wireframes into high-quality code, (3) building reusable components and front-end libraries for future use, and (4) optimizing components for maximum performance across a vast array of web-capable devices and browsers.",
"similarity": 0.4747
}
],
"matched_count": null,
"matched_skills": null,
"role_id": 74,
"score": 0.5107,
"slug": "flutter-developer",
"total_count": null
},
{
"display_name": "Angular Frontend Developer",
"kra_matches": [
{
"kra_text": "collaboration with design and QA",
"sentence": "A commitment to collaborative problem solving, sophisticated design, and quality product is essential.",
"similarity": 0.5392
},
{
"kra_text": "Angular component development",
"sentence": "Your primary focus might vary from: (1) developing new user-facing features using React.js, (2) translating designs and wireframes into high-quality code, (3) building reusable components and front-end libraries for future use, and (4) optimizing components for maximum performance across a vast array of web-capable devices and browsers.",
"similarity": 0.5102
},
{
"kra_text": "Angular component development",
"sentence": "Thorough understanding of React.js and its core principles",
"similarity": 0.4711
}
],
"matched_count": null,
"matched_skills": null,
"role_id": 90,
"score": 0.5068,
"slug": "angular-frontend-developer",
"total_count": null
},
{
"display_name": "Fullstack Developer",
"kra_matches": [
{
"kra_text": "Builds and integrates client-side React or Vue components with server-side Node.js or Django APIs, managing bidirectional data flow across frontend and backend layers.",
"sentence": "Your primary focus might vary from: (1) developing new user-facing features using React.js, (2) translating designs and wireframes into high-quality code, (3) building reusable components and front-end libraries for future use, and (4) optimizing components for maximum performance across a vast array of web-capable devices and browsers.",
"similarity": 0.554
},
{
"kra_text": "Works closely with product managers and UX designers to translate requirements and wireframes into working software features through iterative development.",
"sentence": "A commitment to collaborative problem solving, sophisticated design, and quality product is essential.",
"similarity": 0.4782
},
{
"kra_text": "Builds and integrates client-side React or Vue components with server-side Node.js or Django APIs, managing bidirectional data flow across frontend and backend layers.",
"sentence": "Thorough understanding of React.js and its core principles",
"similarity": 0.4442
}
],
"matched_count": null,
"matched_skills": null,
"role_id": 15,
"score": 0.4921,
"slug": "full-stack-engineer",
"total_count": null
},
{
"display_name": "Svelte Frontend Developer",
"kra_matches": [
{
"kra_text": "performance tuning",
"sentence": "A knack for benchmarking and optimization",
"similarity": 0.5438
},
{
"kra_text": "UI component development",
"sentence": "Your primary focus might vary from: (1) developing new user-facing features using React.js, (2) translating designs and wireframes into high-quality code, (3) building reusable components and front-end libraries for future use, and (4) optimizing components for maximum performance across a vast array of web-capable devices and browsers.",
"similarity": 0.5132
},
{
"kra_text": "UI component development",
"sentence": "Thorough understanding of React.js and its core principles",
"similarity": 0.4104
}
],
"matched_count": null,
"matched_skills": null,
"role_id": 92,
"score": 0.4891,
"slug": "svelte-frontend-developer",
"total_count": null
}
],
"skill_match_roles": [
{
"display_name": "Fullstack Developer",
"kra_matches": null,
"matched_count": 1,
"matched_skills": [
"JavaScript"
],
"role_id": 15,
"score": 0.3333,
"slug": "full-stack-engineer",
"total_count": 3
},
{
"display_name": "Frontend Developer",
"kra_matches": null,
"matched_count": 1,
"matched_skills": [
"JavaScript"
],
"role_id": 7,
"score": 0.3333,
"slug": "frontend-engineer",
"total_count": 3
},
{
"display_name": "Hybrid Mobile Developer",
"kra_matches": null,
"matched_count": 1,
"matched_skills": [
"JavaScript"
],
"role_id": 11,
"score": 0.3333,
"slug": "hybrid-mobile-developer",
"total_count": 3
},
{
"display_name": "Pega Developer",
"kra_matches": null,
"matched_count": 1,
"matched_skills": [
"JavaScript"
],
"role_id": 24,
"score": 0.3333,
"slug": "pega-developer",
"total_count": 3
},
{
"display_name": "Backend Developer",
"kra_matches": null,
"matched_count": 1,
"matched_skills": [
"JavaScript"
],
"role_id": 1,
"score": 0.3333,
"slug": "backend-engineer",
"total_count": 3
}
]
},
"stage4_decision": {
"alias_collision_detected": true,
"case": "D",
"chosen_role": {
"display_name": "Frontend Developer",
"kra_matches": null,
"matched_count": null,
"matched_skills": null,
"role_id": 7,
"score": 1.0,
"slug": "frontend-engineer",
"total_count": null
},
"confidence": 0.95,
"is_new_role": false,
"llm2_fired": true,
"llm2_reasoning": "The role\u2019s KRAs for React component composition, UI-state handling, API integration, and reusable interface components directly align with the JD\u2019s React.js focus and requirements.",
"matched_dimensions": [],
"matched_kras": [],
"matched_skills": [],
"new_role_display_name": null,
"new_role_slug": null,
"queued": false,
"reasoning": "LLM2 picked react-frontend-developer (confidence 0.95)",
"sub_role": {
"confidence": 0.95,
"display_name": "React Frontend Developer",
"reasoning": "hoisted from chosen leaf (case=D)",
"role_id": 89,
"slug": "react-frontend-developer"
}
},
"stage5_updates": {
"centroid_n_after": 249,
"centroid_updated": true,
"collision_log_id": 582,
"new_kra_attached": null,
"new_skills_attached": [
{
"is_primary": true,
"queue_id": 12286,
"role_display_name": "Frontend Developer",
"role_slug": "frontend-engineer",
"skill_name": "DOM",
"status": "pending"
},
{
"is_primary": false,
"queue_id": 12287,
"role_display_name": "Frontend Developer",
"role_slug": "frontend-engineer",
"skill_name": "Flux",
"status": "pending"
},
{
"is_primary": false,
"queue_id": 12288,
"role_display_name": "Frontend Developer",
"role_slug": "frontend-engineer",
"skill_name": "Immutable.js",
"status": "pending"
},
{
"is_primary": false,
"queue_id": 12289,
"role_display_name": "Frontend Developer",
"role_slug": "frontend-engineer",
"skill_name": "Isomorphic React",
"status": "pending"
},
{
"is_primary": false,
"queue_id": 12290,
"role_display_name": "Frontend Developer",
"role_slug": "frontend-engineer",
"skill_name": "JSON Web Token",
"status": "pending"
},
{
"is_primary": false,
"queue_id": 12291,
"role_display_name": "Frontend Developer",
"role_slug": "frontend-engineer",
"skill_name": "npm",
"status": "pending"
}
],
"queue_entry_id": null,
"v3_pipeline_triggered": false,
"v3_role_slug": null,
"v3_run_id": null
}
}
API 2 — extract-details
{}
API 3 — final-role-output
{}
LLM Calls
Every model call made for this run, in pipeline order. Click a card to see the model's response.
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