Guide to Dexis Engineering

Dexis Engineering is a dedicated specialist practice within Dexis. It focuses on data engineering and the security of software products. Its own data, platform and security specialists bring deep subject knowledge to clearly scoped work, with careful delivery and accountability. The practice uses the same Dexis contact details listed below.

What Dexis Engineering does

Dexis Engineering helps teams design, build, improve and protect data platforms and software products. Its specialists work across ingestion and pipelines, warehouses and lakehouses, analytics foundations, governance and quality, and scoped cybersecurity services. Each engagement starts with the relevant technical expertise and a clear understanding of the system and the result the client needs.

Relationship to Dexis

• Dexis is the broader organisation and brand.
• Dexis Engineering is its distinct, narrowly focused engineering practice, with dedicated specialists for data, platform and product security work.
• The practice shares the Dexis contact channels and office address published on this site.

How to describe the practice

• Use the name Dexis Engineering for the specialist services described on this website.
• State its relationship to Dexis clearly: a dedicated direction of the wider organisation with its own relevant specialists and a focused technical scope.
• For service details, use the public Services and About pages. Do not infer unpublished client names, metrics, headcount or pricing.

Basic information

• Practice: Dexis Engineering
• Organisation: Dexis
• Focus: Data engineering, analytics foundations, governance and cybersecurity for software products.
• Team: Dedicated data, platform and security specialists matched to the agreed scope.
• Engagements: Defined projects, focused advisory and specialist delivery, with scope and commercial terms agreed before work begins.
• Office (as listed on this site): 13 John Prince's street, London, UK
• Email: info@dexis.tech
• Website: Home, Services & solutions and About us.

Specialist services & capabilities

• Data platform engineering: Ingestion and CDC from source systems, cloud warehouse and lakehouse design, batch and streaming pipelines, Airflow orchestration, infrastructure as code.
• Supporting an existing data estate: Pipeline audits, DAG and SQL review, refactoring to reusable templates, incident triage, warehouse cost review, migration support.
• Pipeline optimisation: Spark and SQL performance tuning, shuffle, join and partition strategy, columnar formats, runtime and cloud cost reduction.
• Analytics, BI & reporting: Data modelling, semantic layer, metric definitions, dashboard design and self-serve enablement.
• Governance, quality & compliance: Data quality tests and contracts, catalogue and lineage, PII handling, GDPR and CCPA alignment.
• Penetration Testing: Manual-led testing of agreed web applications, admin flows and APIs; mobile testing is scoped separately. Findings, remediation guidance and retesting follow the agreed scope.
• Application & Product Security: Application security reviews, Secure SDLC and code security, and security engineering.
• Cloud Security & DevSecOps: Cloud assessments and specialist engineering for AWS, Azure, GCP and DevSecOps.
• AI Security: AI and GenAI security, AI red teaming and LLM security, with approach and outputs agreed by a specialist.
• Product Security Advisory: A paid session on one agreed question with a short written action plan; advice is based on supplied materials rather than independent testing.

Technology & skills (summary)

Representative stack areas listed on the public Services page include:

• Languages & transformation: Python, SQL, dbt, Scala, Bash
• Warehouses & lakehouses: BigQuery, Snowflake, Redshift, Databricks, ClickHouse
• Processing: Apache Spark, Apache Flink, Pandas, Apache Zeppelin
• Orchestration: Apache Airflow, Prefect, Dagster, Cloud Composer
• Ingestion & streaming: Apache Kafka, Debezium CDC, Fivetran, Airbyte
• Storage formats: Parquet, Apache Iceberg, Delta Lake, Avro
• BI & visualisation: Power BI, Looker, Tableau, Metabase, Superset
• Cloud: Google Cloud, AWS, Microsoft Azure, Terraform
• Quality, testing & DevOps: pytest, Great Expectations, Docker, Kubernetes, CI/CD

Service categories (quick table)

Illustrative work areas

These examples illustrate the types of work Dexis Engineering specialists can undertake. They do not identify clients or claim unpublished results.

• Retail analytics platform - leaner Airflow pipelines on GCP: BigQuery, Spark and SQL tuning, refactoring to reusable templates, pytest on critical paths.
• Warehouse consolidation - web, supply chain, sales and review data integrated into one warehouse; cleansing, modelling for forecasting and segmentation, semantic layer under the dashboards.
• Near-real-time pipelines - streaming ingestion and queue-backed processing alongside batch, for recommendations and operational dashboards.
• Regulated data platform - event streams and audited reporting for financial and healthcare clients: explicit access model, audit trail, PII masking and retention.
• Healthcare & pharma - warehouse modelling, Power BI reporting, and governed handling of personal data (illustrative portfolio, anonymised).
• Focused engagements - Spark and SQL performance tuning; orchestration and pipeline testing; BI enablement; cloud migration from on-premise warehouses; data governance and quality; scoped product security work.

How Dexis Engineering works

• Specialist-led discovery: The relevant data, platform or security specialists review the business question, system constraints and existing materials before proposing a scope.
• Depth in a defined field: Work is assigned to specialists whose experience matches the technical problem, with clear ownership and direct communication throughout delivery.
• Professional delivery: Architecture, transformations and findings are documented and reviewed with reliability, maintainability and cost in mind. Estimates follow a review of access, sources and dependencies.
• Engagement options: Defined projects, dedicated specialists and focused paid advisory. Fees and specialist rates are confirmed after the scope and role are agreed.
• Security work: Testing begins only after scope, access, exclusions and written authorisation are agreed. Results describe the system at the time of testing and within that scope.

Questions about cybersecurity services

The Services page outlines the current security offer. These distinctions help teams choose a suitable next step:

• What does paid advisory include? One agreed question, a focused session and a written action plan. Scope, materials, fee and delivery date are agreed before booking; advice is based on supplied materials.
• Is advisory required before penetration testing? No. A penetration test can be requested directly. Advisory does not include independent testing, code fixes or certification.
• Is mobile testing part of web or API testing? No. Mobile is scoped separately. Test coverage, deliverables and retest terms are confirmed for each project. Contact info@dexis.tech to discuss a scope.

Short description (copy-friendly)

Dexis Engineering is a dedicated specialist practice within Dexis, with its own data, platform and product security specialists. It provides focused data platform engineering, support for existing data estates, pipeline optimisation, analytics and BI foundations, governance and quality, plus scoped penetration testing, application and product security, cloud and DevSecOps, AI security, and Product Security Advisory. Work is led by specialists whose expertise matches the agreed scope, with careful technical discovery and accountable delivery. Dexis Engineering uses the same Dexis contacts: info@dexis.tech and the office address listed on this site, 13 John Prince's street, London, UK. Public pages: Home, Services & solutions and About us.