Quality is our standard.

Accurate data work from trained teams and outsourcing.

Tepu Solutions connects international AI labs, research organizations, and technology companies with trained, managed teams for data annotation, AI evaluation, medical imaging and billing support, dataset collection, and software development.

English +

Chichewa, Bemba, Swahili, Lozi & Tonga

9-Stage

Integrated QA pipeline

Pilot → Scale

Flexible engagement

Services

Our Core Data & BPO Capabilities

Trained teams, proven guidelines, and strict SLAs across AI data preparation, African linguistics, healthcare workflows, and engineering.

◈

AI Data Annotation

High-precision human labeling for machine learning datasets

Rigorous human annotation for computer vision, NLP, and multimodal foundation models. Teams are vetted and trained against your domain-specific taxonomy.

Scope tasks & taxonomies
  • Transcription
  • Text classification
  • Named Entity Recognition (NER)
  • Intent classification
  • Sentiment annotation
  • Content categorization
  • Image annotation (boxes, polygons, segmentation)
  • Video annotation & tracking
  • Audio annotation
  • Entity & attribute labeling
  • Search relevance evaluation
  • Data quality review & auditing
♩

Audio Transcription & Speech Data

End-to-end speech datasets, diarization & acoustic review

Verbatim and clean transcription, speaker diarization, and timestamping by native speakers who understand accents, dialects, and code-switching.

Scope tasks & taxonomies
  • Verbatim & clean-read transcription
  • Speaker diarization
  • Timestamp alignment
  • Acoustic event tagging
  • Speech corpus recording
  • ASR output review
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African Language Services

Native-speaker linguistics for underrepresented models

Authentic Chichewa, Bemba, Swahili, Lozi, Tonga, and English data from native contributors for models that need real regional language coverage and cultural nuances.

Scope tasks & taxonomies
  • Translation & back-translation
  • Dialect localization
  • Cultural safety review
  • Lexicon & glossary building
  • Text corpus creation
  • Prompt & response writing
⚖

AI Evaluation & Human Feedback

RLHF, preference ranking, safety testing & model alignment

Structured human judgment for LLM development: pairwise ranking, rubric scoring, red-teaming, cultural safety, and factuality checks.

Scope tasks & taxonomies
  • Preference ranking (RLHF)
  • Rubric-based response scoring
  • Red-teaming & safety testing
  • Factuality verification
  • Instruction-following evaluation
  • Multilingual output review
⌖

Field & Digital Data Collection

Custom corpora, speech, imagery & behavioral gathering

Consent-based collection of speech, text, and imagery across Zambia and the Southern African region, with metadata captured precisely to your spec.

Scope tasks & taxonomies
  • Speech recording campaigns
  • Image & video capture
  • Survey & form data
  • Text elicitation
  • Metadata tagging
  • Consent & compliance tracking
⌁

Medical Imaging Data Services

Labeling & review support for clinical imaging datasets

Trained teams prepare and review imaging datasets for radiology and pathology workflows, working to written protocols with strict handling rules for sensitive medical data.

Scope tasks & taxonomies
  • Image labeling (boxes, polygons, segmentation)
  • Lesion and region marking
  • Image classification & triage tagging
  • Report-to-image alignment review
  • DICOM metadata tagging
  • De-identification checks
  • Second-reader QC sampling
  • Dataset quality auditing
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Medical Billing & RCM Support

Claim entry, coding review & denial follow-up

Managed back-office teams for healthcare billing operations: registration capture, coding checks, claims support, and denial tracking, reported back to you on a fixed cycle.

Scope tasks & taxonomies
  • Patient & registration data entry
  • Coding & charge entry review
  • Claims submission support
  • Denial tracking & follow-up
  • Payer portal data capture
  • Eligibility verification support
  • Statement & reconciliation support
  • Confidential handling protocols
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Software Development

Web, mobile & data tooling built in-house

A Zambia-based engineering team for product builds, internal tools, and data pipelines — from prototype through to production support.

Scope tasks & taxonomies
  • Web application development
  • Mobile app development
  • APIs & third-party integrations
  • Data pipelines & ETL
  • Annotation and QA tooling
  • Dashboards & reporting
  • Maintenance & support
  • Cloud deployment & monitoring

About

A Trusted Partner for Global Data Work

Tepu Solutions founder Terrence Ng’andu at work

Tepu Solutions Limited is a Zambia-based AI data and outsourcing company providing human-powered data services for artificial intelligence, machine learning, language technology, and digital transformation projects.

Our operating model combines local talent, structured project management, and multi-level quality control — scalable workforce capability with strict consistency and international delivery standards.

◉ Vision

Vision

To be a leading African partner for AI data and business process services.

◎ Mission

Mission

To deliver accurate, efficient work that helps our clients grow and creates skilled jobs.

Regional

Native Regional & Linguistic Capabilities

Authentic African language intelligence and English proficiency from vetted native speakers across Southern and Central Africa.

English

Global & Regional Fluency
Zambia, Regional & International commerce

Fluent contributors for transcription, content moderation, dataset creation, and foundation model evaluation with native Zambian and British-influenced English proficiency.

Chichewa (Chewa)

Primary Regional Focus
Zambia (Eastern, Lusaka), Malawi, Mozambique

Our primary regional focus with deep contributor networks: speech transcription, dialect localization, cross-border terminology, and LLM cultural safety audits.

Bemba (Chibemba)

Widely Spoken in Zambia
Zambia (Northern, Luapula, Copperbelt, Lusaka)

The most widely spoken indigenous language in urban Zambia. Audio transcription, intent classification, sentiment analysis, and conversational dataset creation.

Swahili (Kiswahili)

East & Central African Corridor
East & Central Africa, cross-border corridors

Vital for pan-African speech technology and cross-border commercial applications. High-volume audio transcription, dialect variation tagging, and NLP benchmarks.

Lozi

African Language Services
Available for project scoping

Lozi language support is available through Tepu's African Language Services for project-specific data and language workflows.

Tonga

African Language Services
Available for project scoping

Tonga language support is available through Tepu's African Language Services for project-specific data and language workflows.

Strategic advantage

Why Global AI Teams Choose Tepu Solutions

✓Local African Talent

Direct access to educated, motivated talent pools in Zambia and the wider African market.

✓Native Language Capability

Native speakers who understand colloquial usage, regional accents, and cultural nuance.

✓Scalable Contributor Network

Scale seamlessly from a 5-person pilot to dozens of managed contributors without quality loss.

✓Human-in-the-Loop AI Focus

High-performing models need nuanced human judgment, not mechanical, low-effort click-work.

✓Multi-Tier Quality Control

Screening, gold questions, statistical sampling, error categorization, and continuous retraining.

✓Flexible Engagement Models

Pilots, fixed-scope datasets, burst campaigns, and ongoing dedicated managed operations.

✓Single Accountability Point

One responsive project lead and daily updates instead of managing hundreds of disparate freelancers.

Ecosystem & partnerships

Target Clients & Industry Partnerships

We collaborate with global organizations that prioritize quality, ethical contributor practices, and authentic regional linguistic nuance.

▤   AI & Foundation Model Companies
▤   Machine Learning Research Labs
▤   Language Technology & ASR Providers
▤   Global Data-Labeling Platforms
▤   Translation & Localization Firms
▤   Academic & Non-profit Research Institutes
▤   Digital Transformation Consultancies
▤   Outsourcing & BPO Service Partners
▤   Others

Quality

Quality Built into the Process, Never an Afterthought

Our 9-stage lifecycle combines strict pre-screening, gold-standard benchmarks, dual-tier independent review, and continuous statistical monitoring.

Stage 01 of 09

Recruitment

Quality Gate

Local sourcing based on native language fluency, domain knowledge, and device capabilities.

We source annotators and linguists directly in Zambia with specific dialect backgrounds, educational qualifications, and technical fluency suited to the assignment.

♧ Key deliverables
  • ✓  Contributor pool roster
  • ✓  Hardware & connectivity check
  • ✓  Identity verification
♙ Stage exit quality gate

Minimum university degree or verified linguistic test score (90%+)

Rigorous safeguards

Quality Assurance Controls We Deploy

⛨
Contributor Qualification Tests

Mandatory language, comprehension, and domain testing prior to live work assignment.

⛨
Gold-Standard Calibration Tasks

Hidden benchmark questions inserted randomly within live batches to measure annotator accuracy.

⛨
Dual-Pass & Independent Second Review

Senior leads audit a defined percentage of every batch independently with blind validation.

⛨
Standardized Error Categorization

Mistakes are cataloged by severity (critical, major, minor) and reported back to clients transparently.

⛨
Inter-Annotator Agreement

Continuous Cohen's Kappa / Fleiss Kappa calculation across parallel contributors to prevent rubric drift.

⛨
Targeted Retraining & Rapid Substitution

Underperforming contributors are immediately quarantined, retrained, or replaced without pausing delivery.

Governance & escalation

Dedicated Project Management Structure

  • Client AI/Data Lead
  • Defines taxonomy, acceptance criteria, timeline, and validation rubrics.
  • Tepu Project Manager
  • Single accountable point of contact for SLAs, daily standups, schedule adherence, and batch reporting.
  • QA Lead
  • Conducts independent statistical sampling, gold question audits, and inter-rater agreement checks.
  • Team Leads / Supervisors
  • Coordinate contributor cohorts, run morning calibration sessions, and resolve guideline queries.
  • Vetted Contributor Cohort
  • Native speakers and domain annotators executing tasks in consistent, tracked production shifts.

Engagement

Tailored Engagement Models for Global Organizations

From fast calibration pilots to fully managed, dedicated remote workforce guilds in Zambia.

Interactive dataset & project scope builder

Configure Your Initial Dataset Requirements

Pilot Scope Builder
1. Service pillar
2. Target language
3. Engagement model
4. Target volume tier

AI Data Annotation · Chichewa (Chewa) · Pilot Project · Pilot Batch (0 – 1,000 tasks)

Apply Scope to Inquiry Form →

Leadership

The People Behind Tepu Solutions

Our leadership recruits, trains, and manages every contributor cohort directly from our operational base in Zambia.

Terrence Ng'andu

Founder

Co-founded Tepu to bridge global machine learning teams with high-capability Zambian and regional African data workforces.

Pupe Simangolwa

Founder

Directs enterprise partnerships, international outsourcing relationships, and strategic data operations across multiple verticals.

Operational leadership & quality management guild

Ireen Kdawungu

Chief Operations Officer

Oversees multi-stage QA processes, project delivery SLAs, scheduling, in-country operations, and distributed team coordination.

Chisomo Mbewe

Talent Acquisition Manager

Coordinates contributor screening, background onboarding, linguistic qualification testing, and cohort roster management.

Brian Ng'andu

Human Resource

Manages contributor relations, community welfare, labour compliance, digital workspaces, and onboarding pipelines.

Paul Chishala

Quality Assurance Manager

Directs multi-tier quality audits, gold-standard benchmark insertion, Cohen's Kappa analysis, and accuracy validation.

Contact

Partner With Tepu Solutions

Tell us about your project and the volume you expect. We'll respond with a tailored proposal, a calibration plan, and a delivery timeline.

◷  Response SLA: Within 24 hours on all business inquiries