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PostGIS Consultant

PostGIS consultant for spatial schema design, SRID strategy, GiST indexing, slow query tuning, pgRouting, vector tiles and Oracle/Esri migration to PostGIS.

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PostGIS Consultant
Spatial database experts

PostGIS Consultant support for fast, reliable spatial databases

We design, tune and migrate PostgreSQL/PostGIS databases for GIS teams and software vendors. From schema design and GiST indexing to fixing slow queries and moving off Oracle Spatial or Esri geodatabases, delivered remotely with full knowledge transfer.

Book a Database Review → See What We Offer
Why a specialist

What an experienced PostGIS consultant brings

PostGIS sits underneath most open-source GIS stacks: web maps, geoportals, field apps and analytics pipelines. When the spatial database is designed casually, the symptoms surface later as map layers that take seconds to draw, overlays that run for hours, areas that disagree with desktop GIS, and invalid geometries that silently break processing jobs.

As a PostGIS consultant, we fix these issues at the root. We review schemas and geometry types, settle an SRID strategy for storage versus measurement, add the right GiST or SP-GiST indexes, read execution plans with EXPLAIN ANALYZE, and break oversized polygons apart with ST_Subdivide. Every change is benchmarked before and after, so you see measured improvement rather than promises.

We also help organisations move to PostGIS from Oracle Spatial, SQL Server, shapefile collections or Esri File Geodatabases. Our database work underpins production systems such as Geoportal IGT-PR for ATR/BPN and a land and building valuation WebGIS for PT Saptasentra Jasa Perdana. We work remotely in English, under NDA, and hand over all scripts and documentation.

Services

PostGIS consulting services

A one-off audit, a targeted fix or a longer advisory engagement.

Schema & data modelling

Spatial tables, geometry vs geography types, constraints, attribute relations and partitioning for growing datasets.

Data architecture

Spatial query tuning

EXPLAIN ANALYZE review, GiST/SP-GiST/BRIN indexing, query rewrites and PostgreSQL configuration tuning.

Performance

Large polygon datasets

ST_Subdivide, ST_MakeValid, simplification and overlay strategies for millions of complex features.

Heavy geometry

Raster, topology & pgRouting

PostGIS Raster analysis, PostGIS Topology for shared boundaries, and network routing with pgRouting.

Advanced PostGIS

Migration to PostGIS

Moves from Oracle Spatial, SQL Server, shapefiles and Esri File Geodatabase with feature-count, geometry and CRS validation.

Migration

Spatial DBA operations

Backups, streaming replication, PostgreSQL/PostGIS upgrades and vector tile serving from the database.

Operations
Technical scope

Hands-on PostGIS work we do

Representative tasks from our PostGIS consulting engagements.

  • Audit of schemas, geometry types, SRIDs and constraints
  • GiST, SP-GiST and BRIN index design and verification
  • EXPLAIN ANALYZE review to remove needless sequential scans
  • ST_Subdivide to speed up ST_Intersects on massive polygons
  • Geometry repair with ST_MakeValid plus ongoing validity checks
  • Accurate area and distance via geography or local projected CRS
  • Partitioning spatial tables by region or time
  • ST_AsMVT vector tiles served straight from PostGIS
  • pgRouting for shortest paths, drive-time areas and network analysis
  • Streaming replication, scheduled backups and restore drills
Scenarios

When teams call a PostGIS consultant

The spatial database problems we are asked to solve most often.

Slow web maps

Layers and spatial searches that crawl because indexes and queries were never tuned.

Heavy overlay analysis

Intersections of forest, concession and administrative boundaries that take hours to run.

Cadastre & land data

Parcel and zoning datasets that need precise areas and clean shared boundaries.

Leaving proprietary platforms

Organisations migrating from Oracle Spatial or licensed geodatabases to cut cost and lock-in.

Routing & logistics

Shortest-path, service-area and travel-distance analysis built on pgRouting.

SaaS products with maps

Software vendors who need a PostGIS expert to review the database behind their product.

Why Codeinspira

Consultants who also build the applications

We do not just hand over recommendations; we implement and measure them.

01

Grounded in production systems

Our database designs run behind WebGIS platforms and geoportals used every day. We understand how schema choices ripple into map servers and front ends.

02

Measured results

Every optimisation is benchmarked before and after with EXPLAIN ANALYZE and real workloads. You get numbers, not adjectives.

03

Knowledge transfer, remotely

We explain the reasoning behind each change in English and document it. Working hours at GMT+7 overlap APAC fully and EU mornings for live reviews.

Case Studies

GIS Projects We Have Delivered

GIS systems we have built and operate for corporations, ministries, and organizations.

Supply Chain Traceability WebGIS

Map-based commodity supply chain tracing built for EUDR compliance.

PT Astra Agro Lestari Tbk · Plantation

IGT-PR National Land Geoportal

National-scale thematic land geoportal for Indonesia's Ministry of Agrarian Affairs & Spatial Planning (ATR/BPN).

ATR/BPN · Government

Refrigerant & Certified Technician Map

Nationwide mapping of refrigerant distribution and certified AC technicians.

Ministry of Environment · Indonesia

Supplier Due Diligence Scoring

Location-based risk scoring for supplier due diligence.

PT Astra Agro Lestari Tbk · Compliance

Land & Building Valuation GIS

Spatial analysis supporting land and property valuation.

PT Saptasentra Jasa Perdana · Property

Agrarian Reform Priority Locations

Mapping of agrarian reform priority locations for advocacy and planning.

Konsorsium Pembaruan Agraria · NGO

See the full WebGIS portfolio →

How we work

Our PostGIS consulting process

Start with evidence, finish with documented, measured changes.

STEP 01

Intro call

We learn about your data, applications, workloads and the outcome you need.

01
STEP 02

Database audit

Schemas, indexes, statistics, configuration and the heaviest queries are reviewed.

02
STEP 03

Recommendations

A prioritised list of fixes ranked by impact, effort and risk.

03
STEP 04

Implementation

Schema, index, query or migration changes applied in safe, reversible steps.

04
STEP 05

Benchmark & validate

Performance is re-measured and data integrity and accuracy are verified.

05
STEP 06

Document & hand over

Scripts, documentation and a walkthrough session with your team.

06
Toolset

The PostGIS toolset we use

Tools we rely on to design, tune and migrate spatial databases.

Core database
PostgreSQLPostGISPostGIS RasterPostGIS Topology
Extensions
pgRoutingpg_partmanpg_stat_statements
Indexing & tuning
GiSTSP-GiSTBRINEXPLAIN ANALYZE
Migration tooling
GDAL/OGR (ogr2ogr)QGISArcGIS Proraster2pgsql
Source platforms
Oracle SpatialSQL ServerEsri File GeodatabaseShapefile
Serving
GeoServerVector tiles (MVT)pg_tileservMartin
Operations
Streaming replicationpg_dump / pg_restoreDockerAWS/GCP
Engagement models

How to engage a PostGIS consultant

We scope every engagement after a free consultation instead of quoting generic rates.

Fixed-scope audit & fix

A database audit plus implementation of agreed improvements. Clear deliverables and before/after benchmarks.

  • Written audit report
  • Measured improvements
  • Change documentation
Book a Database Review →

Dedicated consultant

A PostGIS specialist embedded with your team through a migration or new build. Reviews designs, queries and pull requests as you go.

  • Design and query reviews
  • Mentoring your developers
  • Flexible duration
Book a Database Review →

Spatial DBA retainer

Monthly monitoring, backups, upgrades and periodic tuning. Keeps the database healthy as data and users grow.

  • Performance monitoring
  • Planned upgrades
  • On-call advice
Book a Database Review →
FAQ

FAQ: PostGIS Consultant

What does a PostGIS consultant do?
A PostGIS consultant designs spatial schemas, defines SRID strategy, builds the right indexes, tunes slow queries, plans migrations, and sets up backup and replication. We also cover advanced areas such as PostGIS Raster, Topology and pgRouting.
Why are my PostGIS spatial queries slow?
Typical causes are missing GiST indexes, functions that prevent index use, very large and complex polygons, per-row ST_Transform calls and stale table statistics. We prove the cause with EXPLAIN ANALYZE before changing anything, then benchmark the fix.
Which SRID should we store our data in?
Many teams store in EPSG:4326 for interchange, use the geography type or a local projected CRS such as the appropriate UTM zone for accurate measurement, and serve EPSG:3857 to web maps. The best choice depends on your extent, accuracy needs and query patterns, which is exactly what we assess.
How much does PostGIS consulting cost?
It depends on database size, the number of issues to address, migration complexity and whether you need ongoing support. A free consultation lets us scope the work and give you an estimate.
Can you migrate from Oracle Spatial, SQL Server or Esri geodatabases to PostGIS?
Yes. We use GDAL/OGR, QGIS and ArcGIS Pro to move data, then validate feature counts, attributes, geometry validity and coordinate systems. Business logic such as triggers, domains or relationship classes is re-implemented in PostgreSQL.
How long does a PostGIS audit and optimisation take?
An initial audit usually takes a few days. Implementation time depends on the number of changes and how carefully they must be rolled out on a live system, which we always do in reversible steps.
Can PostGIS serve vector tiles directly?
Yes. ST_AsMVT generates Mapbox Vector Tiles in the database, served through lightweight servers like pg_tileserv or Martin, or through GeoServer, and rendered in MapLibre GL JS or OpenLayers.
How do you handle access to our production database?
We sign an NDA, work with least-privilege accounts or anonymised copies where possible, and never keep your data after the engagement. All scripts, configuration and documentation are handed over to you.
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Get a PostGIS expert to look at your database

Share your performance issue or migration plan, and we will propose a focused, measurable plan after a free consultation.

Book a Database Review →[email protected]

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