SustainSys Careers
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Career Opportunities

Be part of a forward-thinking team pushing the boundaries of AI-powered solutions. We're looking for talented individuals who are passionate about innovation and technology.

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AI/ML Engineer

📍 Cambridge client site (3 days/wk) · Mildenhall, Suffolk or remote (2 days/wk)
💰 £56,000 per annum
⏰ 37.5 hours per week
💼 Mid to Senior Level
⏰ Full-Time, permanent
📅 Posted 28 Sep 2026 · Closes 25 Oct 2026
Open

We're looking for an AI/ML Engineer to design, build and maintain intelligent automation systems that streamline enterprise workflows. You'll work at the intersection of AI/ML and process automation — building agentic pipelines, integrating LLMs into production workflows, and developing self-healing automation frameworks that reduce manual effort across regulated industries.

Role Details

  • Job title: AI/ML Engineer
  • Occupation code: SOC 2134 — Programmers and software development professionals
  • Salary: £56,000 per annum
  • Hours: 37.5 per week, Monday to Friday, 09:00–17:30
  • Contract: Full-time, permanent
  • Reports to: Director, SustainSys Consulting Ltd
  • Base: Registered office, Unit A, 82 James Carter Road, Mildenhall, Suffolk IP28 7DE
  • Work pattern: Three days per week at the client delivery site in Cambridge; two days remote or at the registered office
  • Delivery model: All work is delivered under a SustainSys statement of work. SustainSys retains full responsibility for the duties, functions and outcomes of the role. The postholder is managed, supervised and appraised by the Director, and is not supplied as labour to, or under the direction or control of, any client.
  • Posted: 28 September 2026  ·  Closing date: 25 October 2026

Key Responsibilities

  • Design and implement end-to-end AI-powered automation pipelines for enterprise clients
  • Build agentic workflows using LLM orchestration frameworks (LangChain, LangGraph, CrewAI, or similar)
  • Develop intelligent document processing systems using OCR, NLP and classification models
  • Create self-healing automation scripts that adapt to changing data formats and system states
  • Integrate AI models with RPA tools and existing enterprise systems (APIs, databases, cloud services)
  • Build and maintain CI/CD pipelines for automated testing and deployment of AI workflows
  • Monitor automation performance, identify bottlenecks, and optimise throughput and accuracy
  • Collaborate with product, data science and compliance teams to translate business requirements into automated solutions
  • Implement guardrails, logging and audit trails for AI-driven automation in regulated environments
  • Document automation architectures, runbooks and operational procedures

Required Skills & Experience

  • 3+ years of experience in automation engineering, AI/ML engineering, or a related role
  • Strong programming skills in Python; experience with async patterns and task orchestration
  • Hands-on experience with LLMs (GPT, Claude, LLaMA) and prompt engineering for production use cases
  • Familiarity with agentic AI frameworks and multi-step reasoning pipelines
  • Experience with cloud platforms (AWS, Azure, or GCP) and serverless architectures
  • Working knowledge of containerisation (Docker) and orchestration (Kubernetes)
  • Experience with REST APIs, webhooks, and event-driven architectures
  • Understanding of data pipelines and ETL processes
  • Strong problem-solving skills and ability to debug complex distributed systems
  • Excellent communication skills and ability to work in cross-functional teams

Preferred Qualifications

  • Experience with RAG (Retrieval-Augmented Generation) pipelines and vector databases
  • Knowledge of RPA platforms (UiPath, Automation Anywhere, or Power Automate)
  • Familiarity with regulatory compliance frameworks (MiFID II, EMIR, SOC 2)
  • Experience with MLOps tools (MLflow, Weights & Biases, or similar)
  • Understanding of AI safety, evaluation frameworks, and model governance
  • Experience with infrastructure as code (Terraform, Pulumi)
  • Knowledge of message queues and streaming platforms (Kafka, RabbitMQ, SQS)
  • Contributions to open-source automation or AI projects
  • Degree in Computer Science, AI, Engineering, or equivalent practical experience

What We Offer

  • Salary of £56,000 per annum
  • Hybrid working — three days at the client delivery site in Cambridge, two days remote or at our Suffolk registered office
  • Work on production AI systems used by real enterprise clients
  • Professional development budget for courses, certifications, and conferences
  • Access to cutting-edge AI tools, cloud resources, and GPU compute
  • Collaborative team of AI engineers, data scientists, and domain experts
  • Health and wellness benefits
  • Opportunity to shape the future of AI-driven automation in regulated industries
Apply Now →

Android Developer

📍 Remote / Hybrid
💼 5-8 Years Experience
⏰ Full-Time
Closed

We're seeking an experienced Android Developer to join our mobile development team. You'll be responsible for designing and building advanced applications for the Android platform, working with cutting-edge technologies to deliver exceptional user experiences.

Key Responsibilities

  • Design and build advanced applications for the Android platform
  • Collaborate with cross-functional teams to define, design, and ship new features
  • Work with external data sources and APIs
  • Unit-test code for robustness, including edge cases, usability, and general reliability
  • Bug fixing and improving application performance
  • Continuously discover, evaluate, and implement new technologies to maximize development efficiency
  • Maintain code quality, organization, and automatization

Required Skills & Experience

  • 5-8 years of proven software development experience with Android development
  • Strong knowledge of Android SDK, different versions of Android, and how to deal with different screen sizes
  • Proficiency in Kotlin and Java programming languages
  • Experience with Android Jetpack components (ViewModel, LiveData, Room, Navigation, etc.)
  • Solid understanding of the full mobile development life cycle
  • Experience with RESTful APIs to connect Android applications to back-end services
  • Strong knowledge of Android UI design principles, patterns, and best practices
  • Experience with offline storage, threading, and performance tuning
  • Familiarity with cloud message APIs and push notifications
  • Understanding of Google's Android design principles and interface guidelines

Preferred Qualifications

  • Experience with Jetpack Compose for modern UI development
  • Knowledge of MVVM or Clean Architecture patterns
  • Experience with Dependency Injection frameworks (Dagger, Hilt, Koin)
  • Familiarity with continuous integration and automated testing
  • Experience with version control systems (Git)
  • Understanding of Material Design 3 guidelines
  • Experience with Firebase and Google Play Services
  • Published apps on Google Play Store

What We Offer

  • Competitive salary package
  • Flexible working hours and remote work options
  • Professional development opportunities
  • Modern development tools and technologies
  • Collaborative and innovative work environment
  • Health and wellness benefits
Position Closed

Regulatory Business Analyst

📍 Remote / Hybrid
💼 Mid to Senior Level
⏰ Full-Time
Closed

Join our regulatory compliance team as a Techno-Functional Business Analyst specializing in MiFID II and EMIR reporting. You'll bridge the gap between business requirements and technical implementation, working on cutting-edge AI-powered regulatory reporting solutions.

Key Responsibilities

  • Analyze and document regulatory requirements for MiFID II and EMIR reporting frameworks
  • Act as a bridge between business stakeholders and technical development teams
  • Define functional and technical specifications for regulatory reporting solutions
  • Map trading data to regulatory reporting requirements and schemas
  • Conduct gap analysis between existing systems and regulatory obligations
  • Support UAT activities and validation of regulatory reports
  • Collaborate with data teams to ensure data quality and completeness for submissions
  • Stay updated on regulatory changes and assess impact on current implementations
  • Document business processes, data flows, and system integrations

Required Skills & Experience

  • Proven experience with MiFID II transaction reporting requirements
  • Strong understanding of EMIR trade reporting and derivatives regulations
  • Experience in financial services, particularly capital markets or trading operations
  • Ability to understand and analyze complex regulatory documentation
  • Strong data mapping and data lineage documentation skills
  • Experience working with regulatory reporting systems and platforms
  • Understanding of trading lifecycle and financial instruments
  • Excellent analytical and problem-solving abilities
  • Strong communication skills to interact with both business and technical stakeholders
  • Experience with SQL and data query tools

Preferred Qualifications

  • Knowledge of SFTR (Securities Financing Transactions Regulation)
  • Familiarity with Dodd-Frank reporting requirements (SEC & CFTC)
  • Experience with ARM (Approved Reporting Mechanism) submissions
  • Understanding of ISO 20022 messaging standards
  • Experience with AI/ML-based regulatory reporting solutions
  • Knowledge of data governance and data quality frameworks
  • Familiarity with regulatory ontologies and taxonomies
  • Experience with JIRA, Confluence, or similar collaboration tools
  • Certifications in business analysis (e.g., CBAP, CCBA)

What We Offer

  • Opportunity to work with cutting-edge AI-powered regulatory solutions
  • Competitive salary and benefits package
  • Flexible working arrangements
  • Professional development and training opportunities
  • Exposure to multiple regulatory frameworks and jurisdictions
  • Collaborative team environment with industry experts
Position Closed

Office Administrator

📍 On-Site / Hybrid
💼 Entry to Mid Level
⏰ Full-Time
Closed

We're looking for a detail-oriented Office Administrator to manage daily office operations, coordinate administrative activities, and ensure smooth running of our workplace. The ideal candidate will be organized, proactive, and capable of multitasking.

Key Responsibilities

  • Manage daily office operations and administrative tasks
  • Coordinate meetings, appointments, and travel arrangements
  • Handle incoming and outgoing correspondence (emails, calls, mail)
  • Maintain office supplies inventory and place orders as needed
  • Organize and maintain filing systems (both physical and digital)
  • Assist with onboarding new employees and maintaining personnel records
  • Process invoices, expenses, and maintain financial records
  • Coordinate with vendors and service providers
  • Support HR activities including scheduling interviews and maintaining employee database
  • Ensure office equipment is maintained and functioning properly
  • Assist with event planning and coordination

Required Skills & Experience

  • Proven experience as an Office Administrator, Office Manager, or similar role
  • Excellent organizational and time management skills
  • Strong written and verbal communication abilities
  • Proficiency in MS Office (Word, Excel, PowerPoint, Outlook)
  • Attention to detail and problem-solving skills
  • Ability to prioritize tasks and multitask effectively
  • Professional demeanor and strong interpersonal skills
  • Discretion and confidentiality in handling sensitive information
  • Self-motivated with ability to work independently

Preferred Qualifications

  • Experience in a technology or consulting company
  • Familiarity with project management tools (Jira, Trello, Asana)
  • Basic bookkeeping or accounting knowledge
  • Experience with HR administration
  • Knowledge of office management procedures and best practices

What We Offer

  • Competitive salary based on experience
  • Friendly and supportive work environment
  • Opportunities for professional growth
  • Flexible working arrangements
  • Company events and team activities
  • Health and wellness benefits
Position Closed

AI Engineer

📍 Remote / Hybrid
💼 Mid to Senior Level
⏰ Full-Time
Closed

We're seeking a talented AI Engineer with strong DevOps and technical expertise to develop and deploy cutting-edge AI/ML solutions. You'll work on building scalable AI systems, implementing MLOps pipelines, and integrating AI capabilities into production environments.

Key Responsibilities

  • Design, develop, and deploy AI/ML models and solutions
  • Build and maintain MLOps pipelines for model training, testing, and deployment
  • Implement and optimize AI infrastructure using containerization and orchestration tools
  • Develop and maintain CI/CD pipelines for AI/ML applications
  • Work with large language models (LLMs) and implement RAG (Retrieval-Augmented Generation) frameworks
  • Monitor model performance and implement automated retraining pipelines
  • Collaborate with data scientists to productionize ML models
  • Ensure scalability, reliability, and security of AI systems
  • Implement observability and monitoring for AI/ML workloads
  • Optimize model inference performance and resource utilization

Required Skills & Experience

  • Strong programming skills in Python and experience with ML frameworks (TensorFlow, PyTorch, scikit-learn)
  • Solid understanding of machine learning algorithms and deep learning architectures
  • Experience with LLMs (GPT, Claude, LLaMA) and prompt engineering
  • Proficiency in DevOps tools and practices (Docker, Kubernetes, CI/CD)
  • Experience with cloud platforms (AWS, Azure, or GCP) and their AI/ML services
  • Knowledge of MLOps tools (MLflow, Kubeflow, or similar)
  • Strong understanding of software engineering best practices
  • Experience with version control (Git) and collaborative development
  • Familiarity with infrastructure as code (Terraform, CloudFormation)
  • Understanding of data engineering and ETL pipelines

Preferred Qualifications

  • Experience with vector databases (Pinecone, Weaviate, Milvus)
  • Knowledge of LangChain or similar LLM application frameworks
  • Experience with model optimization and quantization techniques
  • Familiarity with distributed training and model parallelism
  • Understanding of NLP techniques and transformer architectures
  • Experience with monitoring tools (Prometheus, Grafana, ELK stack)
  • Knowledge of security best practices for AI systems
  • Experience with GPU optimization and CUDA programming
  • Contributions to open-source AI/ML projects
  • Master's degree in Computer Science, AI, or related field

What We Offer

  • Work on cutting-edge AI projects and technologies
  • Highly competitive salary and equity options
  • Flexible remote work arrangements
  • Access to latest AI tools and cloud resources
  • Professional development budget for courses and certifications
  • Collaborative team environment with AI/ML experts
  • Opportunity to publish research and contribute to open source
  • Health insurance and wellness benefits
Position Closed

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