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AI, ML, & Data Engineering

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AI, ML, & Data Engineering

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Job title: Lead Developer Job type: Permanent Salary: €80k - €100k Role Location: Athens, Greece (hybrid – 2 days a week) The company: I'm working with a fast-growing company in the cybersecurity and data protection space, helping global clients safeguard critical information and maintain operational excellence. Role and responsibilities: The Senior Staff Java Developer will play a key technical leadership role within a backend engineering team building highly reliable, security-critical systems. This is a senior, hands-on position where you’ll influence architecture, engineering standards, and long-term technical direction while remaining deeply involved in delivery. You’ll work closely with senior engineers, platform teams, and stakeholders to design and evolve distributed systems operating at scale. What You’ll Be Doing: Designing, building, and evolving large-scale backend services using Java. Owning and influencing system architecture with a focus on scalability, resilience, and performance. Leading by example through hands-on coding, reviews, and technical mentorship. Solving complex distributed systems and data-intensive engineering challenges. Driving best practices around reliability, observability, and maintainability.   Job requirements: Extensive experience building and operating production systems using Java. Strong background in system design, distributed systems, and backend architecture. Proven ability to influence technical direction and raise engineering standards. Experience working in cloud-native environments (AWS preferred). Benefits: Competitive salary package. High impact role with influence over architecture and engineering direction. Opportunity to work on mission-critical, security-first systems at scale. If interested, apply to be considered!   Accessibility Statement: Read and apply for this role in the way that works for you by using our Recite Me assistive technology tool. Click the circle at the bottom right side of the screen and select your preferences. We make an active choice to be inclusive towards everyone every day. Please let us know if you require any accessibility adjustments through the application or interview process. Our Commitment to Diversity, Equity, and Inclusion: Signify’s mission is to empower every person, regardless of their background or circumstances, with an equitable chance to achieve the careers they deserve. Building a diverse future, one placement at a time. Check out our DE&I page here.

Job title: Senior Software Engineer – Java  Job type: Permanent Salary: €60-€70k Role location: Athens, Greece (Hybrid – 2–3 days onsite per week) The company A globally operating fintech and data security platform building highly scalable, security-first systems used by enterprise clients worldwide. The platform operates at the intersection of payments, data protection, and cloud infrastructure, solving complex challenges around sensitive data management, compliance, and high-volume transaction processing. Role and responsibilities This role focuses on building and evolving distributed, high-throughput systems that operate at global scale and handle sensitive data. What You’ll Be Doing Designing, developing, and maintaining scalable backend services using Java. Building and operating distributed systems with a strong focus on performance and reliability. Working with modern Java frameworks such as Spring, Netty, and Apache Mina. Contributing to architectural decisions around scalability, resilience, and system design. Job requirements Strong commercial experience building backend systems with Java. Solid foundations in computer science, system design, and data structures. Experience working with distributed and cloud-native systems. Strong Spring and microservices exposure. If you’re a Senior Java Engineer looking for ownership, scale, and meaningful technical challenges, apply to be considered Accessibility Statement: Read and apply for this role in the way that works for you by using our Recite Me assistive technology tool. Click the circle at the bottom right side of the screen and select your preferences. We make an active choice to be inclusive towards everyone every day. Please let us know if you require any accessibility adjustments through the application or interview process. Our Commitment to Diversity, Equity, and Inclusion: Signify’s mission is to empower every person, regardless of their background or circumstances, with an equitable chance to achieve the careers they deserve. Building a diverse future, one placement at a time. Check out our DE&I page here.

Summary This person is responsible for leading, managing and coordinating resources and processes to deliver software releases across European exchange technologies, while participating in defining strategy for the development team by driving initiatives that deliver on the company's vision. Location: London, UK Responsibilities Manage a team of software engineers responsible for the development and maintenance of a high performance trading system operating on a shared global codebase across US and European equities and options markets Manage interactions with the US based development team responsible for parallel development of US systems Provide technical direction with respect to performance, reliability and functionality Contribute to the evaluation and development of operational strategy and performance in conjunction with the management team Design, engineer and test highly reliable services to support trading operations Deliver projects on schedule and in compliance with established standards for quality, reusability and ease of maintenance Provide operational support for trading systems including a rotating weekly early shift Spearhead and manage company-wide projects to develop new business lines and increase operational efficiency Work closely with the Europe COO and Head of Exchange Technology to plan, develop and implement strategy to meet agreed organisational performance plans within agreed budgets and timeframes Support strategic planning and execution activities across the European Technology team Provide backup for the Europe COO and represent the European Technology team when required Provide mentoring for other developers Lead others in debugging of complex engineering and operational problems Requirements Strong knowledge of algorithms and data structures Degree in Computer Science, Engineering or related field preferred Deep knowledge in multiple relevant financial areas Strong background in C++ Strong SQL background Strong knowledge of cloud technologies Strong understanding of Agile and what is required to support a highly reliable frequent release cycle Strong experience in automated testing and unit testing Strong understanding and record of project delivery Familiar with open source software evaluation, procurement and licensing About the Company Our client is a global leader in tradeable products and services, operating at the forefront of exchange technology and market infrastructure. They are committed to developing innovative products and delivering cutting-edge trading technology. This is an opportunity to work for an industry leader and have a direct impact on their continued success in the marketplace. Benefits One of the most exciting places to work in London with an opportunity to take on the established exchange sector with leading edge technology. Casual dress code, daily catered lunch, highly competitive salary and bonus, retirement plan with matching contributions, group health plan, gym membership and life insurance.

Senior Software Engineer, Web, Global Exchange Operator   London 4x Days per week in office   We are working exclusively with one of the world's largest exchange operators, a business at the centre of global financial markets. They are looking for a Senior Software Engineer to join their web engineering team, building and maintaining the primary interface for command and control of three European equities venues, trade reporting and SI technology services. These are high-traffic, high-stakes systems handling millions of requests per day.   The Role You will design and build full stack web solutions from front end visualisations through to backend APIs and SQL database implementation. This is a hands-on senior role where you will own features end to end, contribute to sprint planning, mentor junior engineers and act as subject matter expert across one or more systems. The team cares deeply about code quality, testing, automation and user experience   Tech Stack Python 3.8+, Django, LinuxJavaScript, React, NextJS, ExtJS, HTML5, CSS3PostgreSQL andSQL, Apache, unit testing and full stack web testing     What They Are Looking For 5+ years building high-performance, data-driven web applications Strong Python and JavaScript across the full stack Experience with MVC frameworks, Django preferred Comfortable working in a fast-paced, deadline-driven financial markets environment Strong communicator able to work across technical and non-technical stakeholders

Job title: Security Compliance Manager Job type: Contract  Contract Length: 12 months Rate: $35 - $45 per hour Role Location: Remote - Argentina The company: A next-generation AI-driven security platform that dynamically adapts and reconfigures its protective boundaries based on user behavior, device health, and real-time threat signals. Unlike traditional perimeter-based or static zero-trust models, this platform operates as an autonomous, self-healing framework — continuously protecting enterprise environments, distributed workforces, and connected device ecosystems without requiring manual configuration or intervention Role and Responsibilities:  Manage external and internal audits, including reviewing materials that require attention for accuracy and properly adhering to regulatory expectations Work with Engineering and Product teams to identify process improvements and efficiencies in areas of change management, access management and general technology process controls Provide compliance, risk, and controls expertise to support information security and compliance initiatives Manage external security, privacy, and compliance requirements Serve as a subject matter expert for information security principles and practices Job Requirements:   Experience related to conducting risk-based assessment for information systems and/or operations Experience leading industry standard (ISO 27001 or SOC 1/2) audits from either side Thorough understanding of vulnerability management, penetration testing, and attack simulations Strong knowledge of applicable privacy laws Ability to translate security/compliance requirements into actionable work for Engineering/IT/Operations Accessibility Statement:?  We make an active choice to be inclusive towards everyone every day.? Please let us know if you require any accessibility adjustments through the application or interview process.??  ?  Our Commitment to Diversity, Equity, and Inclusion:  Signify’s mission is to empower every person, regardless of their background or?circumstances, with an equitable chance to achieve the careers?they deserve. Building a diverse future, one placement at a?time.??  Check out our DE&I page here   

Job title: Scala Developer Job type: Permanent Salary: Competitive + bonus Role Location: Hybrid in Berlin or Hamburg The company: An established organisation building scalable, reliable backend services for modern transportation and autonomous mobility solutions. The teams are international, cross-functional, and focused on creating high-impact, customer-focused software. Role and responsibilities: Develop and enhance payment-related backend services using Scala. Contribute to a smooth, secure payment experience for users. Maintain high engineering standards through testing, reviews, and validation. Work collaboratively in an agile, cross-functional team. Job requirements: Experience with Scala and functional programming (ZIO or Cats Effect a plus). Interest or experience in distributed systems, Kubernetes, and AWS. Understanding of DevOps practices: automated testing, IaC, CI/CD, monitoring. Fluent English communication. Benefits: Competitive salary & bonus Hybrid working setup Up to 6 weeks per year working remotely from abroad Public transport ticket provided Fitness/bike schemes Learning budget, workshops, and training opportunities Mental health support 30 days annual leave + sabbatical options Relocation assistance Dog-friendly offices Accessibility Statement: Read and apply for this role in the way that works for you by using our Recite Me assistive technology tool. Click the circle at the bottom right side of the screen and select your preferences. We make an active choice to be inclusive towards everyone every day. Please let us know if you require any accessibility adjustments through the application or interview process. Our Commitment to Diversity, Equity, and Inclusion: Signify’s mission is to empower every person, regardless of their background or circumstances, with an equitable chance to achieve the careers they deserve — building a diverse future, one placement at a time.

Senior Software Engineer Location: London (Hybrid) Salary: Competitive + Bonus + Benefits I'm currently working with an exciting and rapidly growing fintech business looking to hire a Senior Software Engineer to join their high-performing engineering team. This is an opportunity to work on business-critical platforms that process large volumes of financial data and transactions, helping to build scalable, secure, and highly available systems used by customers across the UK and Europe. What you'll be doing Designing and developing scalable backend applications using Python Building and optimising complex SQL queries and database solutions Working within Linux-based production environments Developing and maintaining APIs and distributed systems Collaborating with product, engineering, and infrastructure teams Driving technical improvements and contributing to architectural decisions Mentoring engineers and promoting best engineering practices What we're looking for Strong commercial experience with Python 5+ years as a software engineer Advanced SQL skills and experience working with large datasets Solid Linux systems knowledge Previous experience within fintech, banking, payments, trading, lending, or financial services Experience building scalable production systems Strong understanding of software engineering best practices Excellent problem-solving and communication skills

Job title: Business Process Manager – Streaming Revenue Strategy Job type: Contract Contract Length: 12 months Rate: $60 per hour (W2) Role Location: Hybrid, 2–4 days on-site – Los Angeles (primary), Chicago, or New York. This is not a remote role. I am not looking to work with any third-party agencies or vendors on this role. Seriously guys, please don't call me. Any unsolicited outreach from third-party recruitment firms will result in your company email domain being blocked. The company: One of our long-standing clients, a major US media and entertainment company with a streaming platform used by millions worldwide. This role sits with the team that drives advertising and sponsorship revenue across their streaming content. Role and Responsibilities: This is a hands-on strategy and finance role for someone who builds the work themselves, not just directs others. You will shape and run the annual plan for streaming revenue growth and find new ways to grow monetization across the portfolio – a true right-hand seat to leadership. Own the annual strategic and financial plan for streaming revenue growth, including goal-setting, monthly forecasting, and executive reporting Build financial models from scratch and turn data into clear, concise executive presentations Partner with an Airtable specialist to improve revenue-tracking tools and reporting Maintain the streaming expense budget alongside Finance, including analysis and monthly reporting Coordinate global content-slate views to support sales opportunities across regions Identify new monetization and sponsorship opportunities across the streaming business Job Requirements: Background in consulting, investment banking, corporate strategy, business operations, or media/streaming Strong financial modelling and advanced Excel – you build the model, not brief someone else to Data analysis with the ability to translate it into executive-ready presentations and storytelling Track record of working independently and turning ambiguous problems into clear plans Strong interpersonal skills – collaborative, and able to bring cross-functional teams along Bachelor's degree Nice to Have: Experience with Airtable Exposure to advertising, sponsorship, or media monetization Interview Process: A short, fast-moving process with the hiring team. They are actively interviewing now. Please note we are unable to offer employer sponsorship for this role. Accessibility Statement: We make an active choice to be inclusive towards everyone every day. Please let us know if you require any accessibility adjustments through the application or interview process. Our Commitment to Diversity, Equity, and Inclusion: Signify's mission is to empower every person, regardless of their background or circumstances, with an equitable chance to achieve the careers they deserve. Building a diverse future, one placement at a time. Check out our DE&I page here: https://www.signifytechnology.com/diversity-and-inclusion/

Senior Product Designer Permanent 100% Remote $175,000 base salary I am not looking to work with any third-party agencies or vendors on this role. Seriously guys, please don't call me. Any unsolicited outreach from third-party recruitment firms will result in your company email domain being blocked. About the Company One of our clients is an early-stage, venture-backed SaaS company whose platform serves two distinct user groups — individual end users navigating a structured process, and the organisations that support them. Their product is deployed across the US and growing quickly. This is a chance to join early and have genuine influence over where the product goes. Role Overview This is a senior individual contributor role — the company's first dedicated in-house designer. You'll own product design across two distinct surfaces: a consumer-facing product used by individuals, and an operational tool used by staff at client organisations. Multiple greenfield products are in active development, and those will be your immediate focus. Beyond building, you'll lay the groundwork for a design system and help establish how design works inside this organisation. For the right person, there's a clear path to a design leadership position as the team grows. Responsibilities Own end-to-end design across both mobile and web products — consumer-facing and B2B Lead design on new products from the ground up, from initial discovery through to polished execution Translate complex, data-heavy workflows into clear, intuitive experiences for two very different user types Partner with Product and Engineering to shape roadmaps and influence product direction Begin establishing a unified design system to scale across the product suite Plan and conduct user research and usability testing to inform design decisions Advocate for user-centred thinking and contribute to shaping design culture across the company Required Skills and Experience 6+ years of product design experience Portfolio that demonstrates both mobile-first consumer apps and complex B2B or enterprise tools Proven track record designing 0?1 products in early-stage, fast-moving environments Comfortable operating as a solo designer — self-directed, well-prioritised, and independently effective Confident presenting design decisions to both technical and non-technical stakeholders Strong systems thinking with a demonstrated ability to simplify complex workflows through UX Clear, direct communicator who can advocate for design across functions Nice to Have Experience designing for AI-powered tools or workflow automation products Background designing complex operational or data-heavy software for institutional or enterprise users Experience building or contributing to a design system from scratch Interest in eventually growing into a design leadership role Interview Process 3 stages: Hiring Manager screen Take-home design exercise Panel discussion Please note we are unable to offer employer sponsorship for this role.

Job Title: Senior Bioinformatics Scientist Job Type: Permanent Salary: $170,000–$190,000 USD per year + bonus Role Location: San Francisco, CA (hybrid role) Visa Requirements: No sponsorship provided. The Company: Our client is an emerging leader within biotechnology, headquartered in the vibrant tech hub of San Francisco, California. Their mission is to empower scientists worldwide by accelerating biotech research through innovative DNA sequencing and analysis tools. Every day, thousands of innovators—including Nobel Prize winners, biotech startups, and research labs—rely on their solutions to drive world-changing discoveries in healthcare, sustainability, and beyond. In 2024, they saved researchers 2 million hours, transforming their productivity. Join their dynamic, collaborative team to shape the future of science. Role and Responsibilities: As a Senior Bioinformatics Scientist, you’ll lead the charge in building cutting-edge bioinformatics workflows that power faster, smarter science. Collaborating with a passionate team of scientists, bioinformaticians, and software engineers, you’ll drive innovation and mentor others in a creative, high-impact environment. Your key responsibilities include: Designing and optimizing high-performance bioinformatics pipelines for processing thousands of daily samples, leveraging tools like Snakemake and cloud deployments. Innovating sequence analysis workflows for bulk/single-cell RNAseq, differential gene expression, and large-scale genomics, ensuring robust and scalable solutions. Troubleshooting complex sequencing data challenges, from biological artifacts to platform-specific issues, to ensure reliable outputs. Developing intuitive web tools (e.g., Streamlit, R Shiny) and data visualizations to transform raw bioinformatics data into actionable insights. Providing thought leadership and mentoring junior team members, fostering a culture of innovation and collaboration. Staying ahead of industry trends, integrating emerging bioinformatics tools to enhance our offerings for biopharma and research clients. Job Requirements: Education and Experience: PhD in Biological Sciences, Bioinformatics, Computational Biology, or related field, with 3+ years of experience developing production-level bioinformatics pipelines. Required Qualifications: Deep expertise in analyzing bulk/single-cell RNAseq data and performing differential gene expression using state-of-the-art tools. Significant experience building production-level Snakemake (or Nextflow) pipelines, with local and cloud-based deployments. Strong knowledge of sequence analysis (alignment, assembly) and molecular biology, with experience in Oxford Nanopore and Illumina sequencing. Proficiency in Python (numpy, pandas, Jupyter, Biopython) and package management (e.g., Conda). Hands-on experience with Docker, Apptainer, or Singularity for containerized workflows. Expertise in Git/GitHub and Linux shell scripting for version control and automation. Proficiency in developing intuitive web tools for bioinformatics reporting (e.g., R Shiny, Streamlit). Familiarity with public genomic data repositories (e.g., NCBI, Ensembl) and large-scale genomic data processing. Strong communication skills and ability to write clean, maintainable, production-ready code. Preferred Qualifications: Experience with compiled languages (C++, Rust) for performant software development. 1+ year of molecular biology wet lab experience. Demonstrated ability to develop novel bioinformatics algorithms. Strong interest in creating intuitive data visualizations for scientific insights.   Benefits: Competitive Compensation: Highly competitive remuneration. Generous Time Off: 4 weeks paid time off + 10 paid holidays. Comprehensive Health Coverage: Health, dental, and vision insurance, plus life insurance and mental health coverage. Retirement and Wellness: 401(k) with matching, Health Advocate services, and gym membership. Impactful Work: Contribute directly to accelerating biotech research, supporting novel therapies and sustainability. Innovative Environment: Work with cutting-edge tools (e.g., Snakemake, Streamlit, AWS) and collaborate with top-tier researchers. Supportive Culture: Join a passionate, inclusive team that values creativity, mentorship, and professional growth.