Ava Developer

Detailed Description From Employer:

Java Developer

Hybrid (3 days per week in Sheffied)

KEY RESPONSIBILITIES:

Software Engineering & Delivery:

• Design, Build, and ship production quality services within our current business controls
• Build and Optimise DecOps pipelines - enhancing CI/CD processing, including testing and platform/process observability
• Design, iterate, and optimise prompts for a wide range of LLM use cases - instruction following, structured output generation, classification, summarisation, code generation, and reasoning tasks
• Build and manage prompt libraries and versioning strategies, treating prompts as first-class engineering artefacts
• Collaborate with product and domain teams to translate business requirements into precise, well-structured prompt specifications

Agentic AI & LLM Integration

• Architect and implement/maintain agentic systems - autonomous agents, multi-agent pipelines, tool-use workflows, planning loops, and memory-augmented reasoning
• Implement LLM observability - logging, tracing, evaluation pipelines, and guardrails - to maintain quality and reliability in production AI systems
• Advise on responsible AI deployment, including output validation, human-in-the-loop design, and risk mitigation for agentic workflows

Technical Skills & Experience

Full-Stack Engineering

Strong proficiency in Java/Spring Boot - REST APIs, event-driven services, security, and performance optimisation

Solid React development skills and API integration

Experience with relational and in memory databases (PostgreSQL, Redis)

Messaging and streaming platforms - Kafka, or equivalent

Prompt Engineering

Demonstrable, hands-on Experience engineering prompts for production LLM applications - not just prototypes

Familiarity with prompt evaluation frameworks and tooling (PromptFlow, LangSmith, Braintrust, or custom eval pipelines)

Understanding of tokenisation, context limits, temperature tuning, and model-specific behaviours across major LLM providers

Experience structuring prompts for tool/function calling, structured JSON output, and multi-turn conversations

DevOps & Infrastructure

Kubernetes - deployments, services, ingress, Helm, Kustomize, HPA, and RBAC

CI/CD pipelines - GitHub Actions, GitLab CI, Jenkins, or equivalent

Infrastructure as code - Terraform

Cloud platforms - AWS, GCP, or Azure

INSIDE IR35 CONTRACT

Job Title: Ava Developer

Location: Sheffield, UK

Job Type: Contract

Trading as TEKsystems. Allegis Group Limited, Bracknell, RG12 1RT, United Kingdom. No. 2876353. Allegis Group Limited operates as an Employment Business and Employment Agency as set out in the Conduct of Employment Agencies and Employment Businesses Regulations 2003. TEKsystems is a company within the Allegis Group network of companies (collectively referred to as "Allegis Group"). Aerotek, Aston Carter, EASi, Talentis Solutions, TEKsystems, Stamford Consultants and The Stamford Group are Allegis Group brands. If you apply, your personal data will be processed as described in the Allegis Group Online Privacy Notice available at our website.

To access our Online Privacy Notice, which explains what information we may collect, use, share, and store about you, and describes your rights and choices about this, please go our website.

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