Sentiment Forecasting Engineer
When to Use
- Build aggregate sentiment indices from high-volume text streams (social, news, reviews, surveys)
- Design temporal rollups — hourly, daily, weekly aggregation with consistent weighting rules
- Forecast opinion trajectories — point forecasts, prediction intervals, and scenario bands
- Model leading/lagging relationships between sentiment and sales, traffic, volatility, or brand KPIs
- Select and implement time-series and sequence models — ARIMA, Prophet, state-space, TFT, etc.
- Run nowcasts and choose forecast horizons aligned to decision cadence
- Engineer features from volume, velocity, topic mix, and engagement quality
- Backtest with walk-forward validation and report calibration of uncertainty
- Handle spikes, bot noise, sample bias, and regime shifts in language or product mix
- Integrate outputs with BI dashboards, brand monitoring, or research workflows (methodology only)
When NOT to Use
- Per-document or per-span polarity labeling, annotation, or classifier training →
sentiment-analysis-engineer
- Generic demand, inventory, or logistics forecasting without sentiment inputs →
predictive-logistics-developer
- Investment advice, trade recommendations, or actionable trading signals → provide forecasting methodology and uncertainty only
- Marketing copy, campaigns, or brand voice → ,
- Broad macro econometrics or financial modeling without text-derived sentiment → (partial overlap only)
- Exploratory NLP or single-shot sentiment scores on a static corpus →
sentiment-analysis-engineer
- LLM product features, agents, or RAG (unless sentiment forecasting is one pipeline component) →
Related skills
| Need | Skill |
|---|
| Document-level polarity, ABSA, annotation, classifier eval | sentiment-analysis-engineer
|
| General ML, experimentation, non-time-series predictive modeling | |
| Warehouse metrics, dbt, analytics pipelines (if present in repo) | |
| Demand/inventory forecasting without opinion indices | predictive-logistics-developer
|
| Campaign ROI and channel performance (if present in repo) | |
| Ratios, valuation, macro series without text sentiment (if present) | |
| LLM apps, feature stores for agent products | |
Core Workflows
1. Scope and index design
Clarify population (brand, product, geo), text sources, aggregation grain, target horizon, and downstream KPIs.
See references/sentiment_forecasting_engineer_scope.md
2. Indices, aggregation, and features
Define index formulas, rollups, topic/strata splits, and covariates (volume, velocity, mix).
See references/indices_aggregation_and_features.md
3. Time-series and forecast models
Choose baselines and advanced models; align seasonality, holidays, and exogenous drivers.
See references/time_series_and_forecast_models.md
4. Backtesting, validation, and metrics
Walk-forward evaluation, interval calibration, and spike-event holdouts.
See references/backtesting_validation_and_metrics.md
5. Data quality, bias, and events
Bot filtering, sample bias, language drift, and shock labeling for scenario analysis.
See references/references_data_quality_bias_and_events.md
6. Production monitoring and stakeholders
Serving cadence, drift monitors, dashboard contracts, and stakeholder-ready narratives.
See references/production_monitoring_and_stakeholders.md
Outputs
- Index specification — formula, universe, weights, strata, and revision policy
- Feature catalog — engineered signals with definitions and lag structure
- Forecast spec — horizon, frequency, model family, and exogenous inputs
- Backtest report — walk-forward metrics, interval coverage, and failure slices
- Nowcast playbook — latency budget, refresh rules, and stale-data handling
- Monitoring plan — drift, spike alerts, and human review triggers
- Stakeholder brief — trajectory narrative with explicit uncertainty (no trade advice)
Principles
- Forecast aggregates, not individual opinions — index stability and definitional clarity come first
- Treat index construction as part of the model — changing weights invalidates historical comparability
- Prefer walk-forward evaluation over single holdout splits for time-ordered data
- Report intervals and scenarios, not point estimates alone; disclose coverage on backtests
- Separate methodology from decisions — do not present forecasts as buy/sell or guaranteed outcomes
- Document known biases (platform mix, bot share, demographic skew) beside every published index