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AI, ML, & Data Engineering

ADVANCE SOFTWARE ENGINEERING

AI, ML, & Data Engineering

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Job title: Staff Founding Engineer Job Type: Permanent Salary: $150,000-$250,000 + Significant Equity Role Location: US The Company: We’ve partnered with a fast growing fintech startup that’s automating bookkeeping, tax filing, and real-time financial insights for hundreds of startups.  They’re hiring a Staff level Founding Engineer to own end-to-end product development in a small, high-trust team that values craft, simplicity, and shipping fast.  What You’ll Do Ship secure, fast, and scalable production code across the full stack Collaborate directly with the CEO and designer to deliver complete features — backend to frontend Build and maintain banking/accounting integrations with rigorous data quality and reliability Continuously improve testing, observability, security, and deployments Work asynchronously with minimal meetings — trusted to own your time and output Tech Stack Backend: Ruby on Rails, Postgres, Redis, Sidekiq Frontend: Turbo, Stimulus, ViewComponents, Tailwind Ideal Background 6+ years shipping server-side rendered Rails apps in production Thrive in async, ownership-driven environments with high ambiguity Bias for simple, pragmatic solutions and polished end-to-end execution Take pride in efficient code, hard problems, and user experience Benefits Competitive salary + 5% equity Medical, dental, and vision insurance Meals, gym membership, and professional education benefits 10+ years of runway with strong investor backing

Job title: HRIS Transformation Project Lead Job type: Contract Contract Length: 12 months (strong potential for extension based on project needs) Rate: $80 - $90 Role Location: Phoenix, AZ (hybrid) The company: Our client is a premier owner and operator of Manufactured Home Communities, RV Parks, and Resorts across North America and the UK. With more than 20 years of experience acquiring, developing, and enhancing high-quality properties in prime destinations, they create exceptional lifestyle communities that residents and guests love to call home. Guided by core values — Hospitality, Excellence, Passion, Trustworthiness, Stewardship, and Kindness — they are committed to delivering outstanding experiences while building the best possible place to work, visit, and live. Their Phoenix-based headquarters drives a collaborative, values-driven culture. Role and Responsibilities: Lead full lifecycle HR transformation projects, owning the RFP process for HRIS platform selection (Workday, UKG, ADP, SuccessFactors, Dayforce or equivalent) Manage end-to-end implementation of the selected HRIS, including configuration, data migration, testing, change management, go-live, and post-go-live optimization Identify and deliver process automation across HR functions (onboarding, payroll, benefits, talent management, reporting, etc.) to improve efficiency and employee experience Build and lead cross-functional project teams, confidently directing and influencing VPs, Directors, and senior stakeholders Partner closely with IT, Finance, Operations, and Legal to ensure seamless integration and full compliance Develop detailed project plans, timelines, budgets, risk registers, and executive-level status reporting Evaluate and recommend HR outsourcing, shared services models, or Professional Employer Organization (PEO) arrangements where they deliver value Create process documentation, training materials, and ensure smooth knowledge transfer to internal teams Job Requirements: 8+ years progressive HR experience with at least 5 years leading multiple end-to-end HRIS transformation projects (RFP ? selection ? implementation ? automation) Proven success running formal RFPs for HR technology platforms, including vendor evaluation, demos, contract negotiation, and final selection Hands-on experience implementing and optimizing enterprise HRIS platforms with measurable automation and efficiency gains Demonstrated ability to lead complex projects and influence senior stakeholders (VPs/Directors/C-suite) at a senior level Strong project management discipline (PMP, Prosci, or similar certification preferred) Excellent stakeholder management, change management, and communication skills Bachelor’s degree in HR, Business, Information Systems, or related field (Master’s or HR certifications a plus) Preferred: Direct experience with HR outsourcing, shared services centers, or PEO partnerships; background in multi-state / multi-country operations or hospitality/real-estate industries 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 NodeJS Developer  Job type: Contract Contract Length: 12 months Rate: $15 p/h Role Location: Brazil  The company: Financial Services Role and Responsibilities: Building and scaling backend services using Node.js Deploying and managing applications in Kubernetes Working with MongoDB in production environments Contributing to cloud infrastructure (Azure or AWS) Identifying technical risks and proactively solving them Collaborating closely with product and engineering stakeholders Job Requirements: 5–8+ years of backend development experience Strong commercial experience with Node.js (essential) Experience with Kubernetes and containerised environments Solid knowledge of MongoDB Experience with Azure or AWS (nice to have) Comfortable working in regulated or high-availability environments 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: Junior Mid Scala Developer Job type: Perm Salary:€30,000-€45,000 Role Location: Lisbon, Portugal (3x Days per week on site) The company: Signify Technology are working with a long-standing, trusted clients of ours who are looking to expand their engineering team in Lisbon, Portugal, who operate in the finance and insurance company.   Role and responsibilities: - Contribute to a robust microservices architecture in Scala, utilizing technologies such as SBT, Quill, ScalaPB, Http4s, Scalatest, Oracle DB, Postgres, Flyway, Kafka, RabbitMQ, Protobuf, Scalaxb, git, Docker, Kubernetes, Jenkins, and Elastic Search. - Maintain and enhance the Scala 2.13 codebase, incorporating tools like sbt, quill, scalapb, flyway, and protobuf. - Develop new microservices to automate and optimize business processes. - Collaborate closely with business analysts and stakeholders to gather requirements and design innovative features. - Review performance metrics and ensure scalability of existing processes and services. 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: Python Data/Machine Learning Engineer (Fluent in Dutch) Job type: Perm Salary: 70-80k + Bonuses Role Location: Amsterdam Role and responsibilities: You have an insatiable interest in, a passion for, and over five years of experience with the magical and fastest-growing Python language. If you work in data-driven environments as a Data Engineer, Data Scientist, or Data Analyst, and have an affinity for designing and building Data Pipelines and Machine Learning solutions, then we're looking for you.  Job requirements: Python Python libraries and frameworks such as Pandas, scikit-learn, PySpark, Keras, TensorFlow and Airflow and tools such as Kafka and Docker. Experience in designing and building Data Pipelines. Experience with Machine Learning models in production environments. Experience with Machine Learning models such as Decision Trees / Random Forests, Deep Learning, simulations and optimization algorithms. Experience with Software Testing. Knowledge of methods such as Agile, Scrum and DevOps: CI/CD pipelines. Knowledge of containerization (Docker/Kubernetes). Knowledge of Relational and NoSQL databases. Knowledge of Cloud infrastructure (choice of Azure, AWS, Google, etc.). Fluent in Dutch 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

Position: Senior/Staff Full Stack Engineer (TypeScript / Python) Location: Remote (Must be based in Portugal) About the Role Signify have partnered with a company that are looking for a Senior/Staff Full Stack Engineer to join their distributed engineering team and play a key role in designing and delivering scalable, cloud native SaaS solutions. This position requires deep expertise across modern web application development, with TypeScript powering the frontend and Python driving backend services.   You will contribute to architectural decisions, guide technical standards, and help elevate engineering practices across the team. Key Responsibilities   Design, develop, and maintain robust web applications using TypeScript (frontend) and Python (backend) Lead and contribute to architectural discussions, technical design sessions, and system reviews Translate business requirements into scalable, secure, and maintainable technical solutions Mentor and support junior engineers, fostering strong development standards and best practices Actively engage in Agile ceremonies including daily stand-ups and sprint planning Participate in peer code reviews to ensure code quality, performance, and reliability Contribute to continuous improvement of SDLC processes and deployment workflows Required Experience & Skills 10+ years as a software engineer Hands on experience with both Python and Typescript Strong understanding of system architecture, design patterns, and technical trade offs Experience designing and working with relational databases and data modeling principles Good knowledge of Kuberenetes and AWS Experience working within Agile or Kanban development methodologies Coaching and mentoring experience

Job title: Frontend Developer – Vue.js Job type: Permanent Salary: Up to €55,000 Role Location: Athens, hybrid 3 days a week onsite The company: Rapidly expanding Travel Tech! Role and responsibilities: I'm looking to recruit a Frontend Developer who is passionate about modern web architecture and building scalable, high-performance single-page applications using Vue.js. This is an exciting opportunity to join a company undergoing a frontend modernization journey, moving towards Vue.js 3, TypeScript, and Pinia, and building a reusable frontend capability for future projects. What You’ll Be Doing: Contributing to the frontend modernization strategy using Vue.js 3, TypeScript, and Pinia Building and maintaining scalable single-page applications Developing reusable, maintainable UI components and frontend architecture Integrating with external APIs and services (including Google integrations) Implementing real-time functionality using WebSockets Collaborating closely with backend, product, and data teams Contributing to the creation of a reusable frontend team to support future projects Supporting potential future expansion into mobile (React Native roadmap) Job requirements: Strong commercial experience with Vue.js (ideally Vue 3) Experience with TypeScript in frontend applications Solid understanding of state management (Pinia or Vuex) Experience building and maintaining single-page applications Experience integrating with external APIs and third-party services Understanding of real-time technologies such as WebSockets A passion for clean, scalable frontend architecture A collaborative mindset and interest in modern frontend best practices 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: Mobile Infrastructure Architect Job type: Permanent or Contract-to-Hire (6-12 months) Salary/Rate: Dependent on experience Role Location: Warsaw   About the Company The company is a global leader in mobile and web testing solutions, providing tools that help engineering teams deliver high quality digital experiences. They operate a large scale platform that enables automated and real?device testing, performance insights, and secure, reliable infrastructure for enterprise customers.   Role Overview We are looking for a Mobile Architect that will be responsible for leading the design, implementation, and operation of our client's real?device and emulator platform. This role owns the technical vision, driving innovation and ensuring the mobile testing stack remains scalable, secure, and highly available while advising on emerging mobile technologies to meet evolving customer needs.   Responsibilities Provide hands-on leadership, guiding the team in architecting, designing, and documenting scalable system components and integrations. Stay current with the latest Android/iOS releases and emulator/simulator technologies. Direct solution design for manual and automated mobile testing workflows, performance profiling, reporting, and app distribution. Collaborate with operations, networking, and security teams on data centre planning and enforce best practices across on?prem and cloud environments. Partner with product management to translate business requirements into robust technical solutions. Define and promote engineering standards, patterns, and best practices across teams. Communicate architectural decisions clearly to developers, leaders, and stakeholders. Lead development of features that improve internal workflows and enhance customer productivity. Conduct code reviews and provide architectural guidance to engineering teams. Continuously improve system performance, reliability, and scalability. Identify and manage technical dependencies across teams and platforms. Ensure timely project delivery through strong cross?functional alignment.   Required Technical Skills Deep expertise in Android and iOS ecosystems, including real devices and emulators/simulators. Strong proficiency in Kotlin/Java and Swift/Objective?C, plus experience with modern languages (e.g., Python, Go). Strong background in mobile reverse engineering, debugging, and mobile application development. Experience with SaaS platforms, particularly in QA, developer tools, or enterprise environments. Familiarity with CI/CD pipelines and DevOps methodologies. Cloud architecture experience (GCP preferred, AWS also welcome).   Bonus Points: Knowledge of IAM and RBAC in enterprise-scale systems. Experience deploying applications on Kubernetes and virtual machines. Understanding of microservices, event-driven architectures, and API design principles.   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: Site Reliability Engineer Job type: Contract Contract Length: 12 months  Rate: $20 p/h  Role Location: Colombia  The company: Financial Services Role and Responsibilities: Partner with Development teams to support application build and continuous improvement. Expand, optimise, and maintain CI/CD pipelines. Troubleshoot and resolve production issues using APM tools. Work daily with AWS cloud infrastructure. Optimise service performance and cloud costs. Ensure high availability, reliability, and security of systems. Analyse current architecture and propose scalable improvements. Design and implement automated workflows and infrastructure processes. Promote and embed DevOps culture across engineering teams. Job Requirements: University degree in Engineering, Computer Science, or related field. Strong hands-on experience with AWS, including: Cognito Aurora PostgreSQL EKS Lambda S3 API Gateway DynamoDB EC2 DocumentDB SNS OpenSearch Experience with Messaging/Streaming technologies: RabbitMQ SQS Kafka Kinesis Infrastructure as Code expertise: CloudFormation Terraform Strong Kubernetes (K8s) experience: Resource optimisation Provisioning new services Improving existing services K8s architecture design Experience with Windows Server (Active Directory, IIS, Windows Services). CI/CD tooling experience: Jenkins Azure DevOps Scripting/programming skills in: Shell Python 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 Java Developer Job type: Permanent  Salary: Up to €65,000 Role Location: Athens, hybrid 3 days a week onsite  The company: Rapidly expanding Travel Tech! Role and responsibilities: Work on a large-scale greenfield modernisation project to transform the travel and transportation ecosystem, empowering businesses with innovative, scalable, and efficient technology solutions, overseeing three different teams. What You’ll Be Doing: Platform Overhaul: Transitioning legacy systems to modern, microservices-based architectures. Next-Gen Features: Rolling out tools like revenue management systems and web check-in portals. Build new reservation and ticketing systems designed for reliability and scalability.  System Integration connecting the travel ecosystem with robust APIs and microservices. Job requirements: Strong expertise in Java, Spring Boot, and RESTful API design. Experience with microservice architectures, database management (PostgreSQL or similar), and Docker. Knowledge of Agile methodologies and a collaborative mindset. 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