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Onyinyechi O.
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Onyinyechi O.

ESG & Sustainability Consultant | Technical Writer |AI Data Annotation

I help businesses turn complex sustainability, energy and environmental requirements into practical strategies, clear analysis and deliverables they can actually use. I am a sustainability and environmental strategy professional with over 10 years of international experience across Canada, the UK, Europe and other global markets, spanning consulting and industry. I have worked with organisations across financial services, retail and government, including Deloitte, IKEA and UK Government clients. My work spans three areas: Sustainability, Energy & Environmental Advisory - Sustainability and ESG strategy, climate and carbon, Scope 1–3, Net Zero, energy and environmental management, regulatory readiness, GRC, audit and assurance, materiality, responsible sourcing, circular economy, sustainability reporting, B Corp certification and EcoVadis. Research & Technical Writing - Energy and environmental research, sustainability and regulatory analysis, technical reports, policy briefs, white papers, executive presentations and research-based content. AI & Expert Evaluation - AI prompt development, response evaluation, domain-specific testing, data annotation, quality assurance and expert review, particularly across sustainability, energy, environmental and business domains. Clients typically bring me in when they need to understand a complex requirement, assess their current position, develop a practical strategy, prepare for certification or assessment, strengthen governance and compliance, or turn technical information and data into a clear, decision-ready output. Having worked both in consulting at Deloitte and within organisations, I understand both the technical requirements and the practical realities of implementation. I focus on rigorous, practical work that helps clients make better decisions and move forward. If you have a sustainability, energy, environmental, GRC, certification, research or AI challenge, tell me what you are trying to achieve and I can help determine the right approach.

🇬🇧London, United Kingdom$50/hr100% JSS4.60 (5)Since May 2016

Earnings and projects

MRR
$168

Last 6 months ÷ 6

World#119,244 / 412k
🇬🇧Country#2,426 / 10.7k
Revenue, last 30 days
$0

Last 6 months: $1k

Total earnings
$1.1k

Billed in all: $1.3k

World#384,489 / 412k
🇬🇧Country#10,086 / 10.7k
Per project
$140

$337 in the last 6 months

World#287,446 / 412k
🇬🇧Country#8,086 / 10.7k
Projects, last 6 months
3
67% fixed33% hourly
World#66,479 / 412k
🇬🇧Country#1,491 / 10.7k
Projects in all
8

Across 12 contracts

92% fixed8% hourly
World#223,560 / 412k
🇬🇧Country#6,079 / 10.7k

Earnings, last 30 days

$1.3kNothing earned in the last 30 daysBilled in all, before Upwork's fee · drag across the chart to see what was earned in any stretch
$1,320$1,340$1,360$1,380Oct 8Oct 23Nov 7

Skill rankings: Top 19% in Academic Writing

Ranked by MRR among everyone on Upwork with the skill.

  1. #10Sustainable Product36 freelancers · 🇬🇧 #2Top 28%
  2. #17Personal Statement70 freelancers · 🇬🇧 #2Top 24%
  3. #33Corporate Social Responsibility120 freelancers · 🇬🇧 #4Top 28%
  4. #34Environmental, Social & Corporate Governance117 freelancers · 🇬🇧 #3Top 29%
  5. #34Greenhouse Software78 freelancers · 🇬🇧 #4Top 44%
  6. #119Sustainability478 freelancers · 🇬🇧 #15Top 25%
  7. #334Stakeholder Management948 freelancers · 🇬🇧 #20Top 35%
  8. #418Research & Development1,511 freelancers · 🇬🇧 #17Top 28%