Senior SQL Developer

DVT is a leading global software development and data engineering company, delivering innovative technology solutions to some of the world's most respected brands. We pride ourselves on engineering excellence, agile delivery, and a people-first culture. Our teams work across industries, solving complex problems with cutting-edge technology. We are a community of passionate technologists who continuously push the boundaries of what's possible. We are looking for a Senior SQL Developer to join our Data & Analytics Practice. In this client-facing role, you will be responsible for the design, development, and maintenance of complex SQL databases, writing efficient queries, stored procedures, and triggers. You will play a key role in database architecture, performance tuning, and mentoring junior developers. This is a consultative engineering role — you will work directly with clients to understand their business challenges, architect robust database solutions, and lead delivery teams in a fast-paced, agile environment. You will be a technical leader, mentor, and advocate for modern database engineering best practices. Key Responsibilities 1. Database Design & Development Schema Design: Design, implement, and maintain database schemas, including tables, indexes, and relationships to support business requirements. Stored Procedures & Triggers: Develop and manage stored procedures, functions, and triggers to automate database operations and enforce business rules. SQL Query Optimization : Write and optimize complex, high-performance SQL queries to ensure efficient data retrieval and manipulation. Data Modeling: Design and implement data models that accurately represent the structure and relationships of data, including dimensional and relational modelling where required. 2. Performance & Integrity Performance Tuning: Identify and resolve performance bottlenecks in database queries, indexing strategies, and infrastructure. Data Integrity & Security: Ensure data accuracy, consistency, and security through proper validation, constraints, and access control mechanisms. Database Version Control: Implement and maintain robust database version control practices, including change scripts and migrations. 3. ETL & Data Integration ETL Processes: Develop and manage processes for extracting, transforming, and loading data from various sources into target databases. Data Pipelines : Build and maintain reusable data integration patterns, parameterised scripts, and modular solutions. 4. Client Engagement & Analysis Requirements Gathering: Work directly with client stakeholders to elicit, translate, and manage technical and business requirements. Solution Design: Lead architectural and design sessions, ensuring alignment with business goals and enterprise strategies. Documentation: Produce clear, high-quality technical documentation across the project lifecycle (pre, during, and post-delivery). Estimation & Scoping: Contribute to project planning, estimation, and risk assessment for database initiatives. 5. Technical Leadership & Mentorship Mentoring : Share knowledge and provide guidance to junior developers on database-related tasks, promoting best practices and code quality. Agile Delivery: Actively participate in and guide Agile ceremonies (Scrum, Standups, Sprint Planning, Kanban). Standards: Enforce database engineering standards, naming conventions, and governance practices across all deliverables. Troubleshooting: Investigate and resolve complex database-related issues and problems in production and non-production environments. 6. Business Intelligence & Collaboration BI Integration: Connect databases to business intelligence tools (Power BI, SSRS, etc.) for reporting and analysis. Collaboration: Work closely with developers, business analysts, and stakeholders to understand requirements and develop robust solutions. Staying Updated : Keep up-to-date with the latest SQL Server technologies, trends, and best practices. Technical Competencies Essential (Core Expertise) Microsoft SQL Server : Deep, production-grade experience with SQL Server (2016+). T-SQL: Advanced proficiency in writing complex queries, stored procedures, functions, and triggers. Performance Tuning: Proven ability to optimise queries, indexing, and execution plans. Database Design: Strong experience in schema design, normalisation, and data modelling. ETL : Experience with SQL Server Integration Services (SSIS) or similar ETL tools. Version Control: Experience with database version control tools (e.g., Redgate, Azure DevOps, Git). Tools: Proficiency with SQL Server Management Studio (SSMS), Azure Data Studio, or similar. Advantageous (Nice to Have) Azure SQL: Experience with Azure SQL Database or Azure SQL Managed Instance. Business Intelligence: Exposure to Power BI, SSRS, or SSAS. Open Source: Experience with PostgreSQL or MySQL. DevOps: CI/CD for database deployments. Data Warehousing: Experience with dimensional modelling (Star Schemas) and data warehousing concepts. Qualifications & Experience Essential: 5+ years of experience in SQL development within the Microsoft ecosystem. Proven experience in database design, performance tuning, and ETL processes. Strong client-facing or consulting experience is highly valued. Advantageous: BSc Computer Science, Engineering, Mathematics, or equivalent 3-year qualification. Microsoft SQL Server certification (e.g., MCSA, MCSE). Experience in the financial services, insurance, or healthcare sectors. Why Join DVT? Work with cutting-edge database technologies on real-world, large-scale projects. Be part of a globally recognised software engineering brand. Collaborative, agile culture with a strong focus on continuous learning and certification. Opportunity to mentor and lead — not just code. Competitive remuneration and benefits. Exposure to diverse industries and challenging client problems.