• Designing and developing scalable, robust, testable, efficient, and easily maintainable code • Translating software requirements into stable, working, high performance software • Playing a key role in architectural and design decisions, building toward an efficient micro services distributed architecture • Creating design documents

Title: Senior Backend Developer (Python) Location: Amsterdam North Holland NL Hybrid Job Description: We are the Intelligent Internet Platform. We connect People, Places and Things anywhere, managing Internet Performance better than anyone else while providing One Global Experience, giving Visibility, Control and Security through expereoOne. Expereo believes in the power of Internet connectivity. As the world's largest provider of managed internet, SD-WAN/SASE, and Cloud connectivity solutions, we power enterprises and government sites worldwide, helping to enhance every business' productivity with flexible and optimal Internet performance. As a trusted partner of Fortune 500 enterprises, our continued aim and success in helping our customers and partners depends solely on the talented individuals who make Expereo a dynamic, effective, multicultural, and equitable environment. About the role We are looking for a Backend Developer to join the Supplier onboarding and Quote Management teams and work directly on the computational core of our platform. You will write Python and/or dotnet every day. You will work on an existing Python/C# backend and create new services. You will work on solving real-world business problems, like creating a constraint optimization engine, working on integrations with our partners and creating and maintaining internal tools. The core of the role sits at the intersection of three things: - Algorithmic implementation — translating complex commercial requirements into deterministic, auditable logic. You will implement and maintain the optimization engine that drives our quote generation. - API design and contract maintenance — defining clear contracts between services, and ensuring the interface is clean, versioned, and reliable for downstream consumers. - Code quality and engineering discipline — making code production-ready and scalable: writing tests, applying engineering standards, and ensuring the codebase can grow with the platform. You will work directly with the innovation and commercial teams. This role is also designed with growth in mind. The knowledge and context you build here — deep familiarity with the platform, the commercial logic, and the constraints of the business — make this a natural stepping stone toward a technical execution role, potentially supporting a commercial STO (single thread owner) function as the platform scales. Key Responsibilities Business Logic Implementation - Implement and maintain business logic for the quote engine, partner integrations and internal services: supplier selection, service bundling, routing rules, product validation … - Explore, document and integrate heterogeneous external data sources necessary to the execution of business logic. - Ensure all outputs are auditable, and explainable to commercial stakeholders — we don’t build black boxes. - Validate model outputs against historical data; measure and report on prediction reliability. - Optimize the operational value of the integrations with our partners. API Design & Contract Maintenance - Define contracts, manage versioning, and ensure downstream consumers are never broken silently. - Write clear, well-documented API interfaces with explicit input/output contracts and error handling. - Coordinate with the Platform engineer on service integration and ensure clean separation of concerns between components. - Maintain API documentation as a living artifact, not an afterthought. Code Quality & Engineering Practices - Refactor and clean up existing Python/C# code: reduce complexity, increase testability, and bring the codebase up to production engineering standards. - Write unit and integration tests that provide real confidence — not just coverage numbers. - Apply Git, code review, and CI practices to all work. Code lives in a repository, goes through review, and is reproducible without intervention. - Document non-obvious logic thoroughly so knowledge is transferable. Collaboration & Communication - Partner with the Commercial teams, Quote Engine lead Platform engineer — this is collaborative work, not ticket execution. - Participate in sprint reviews, propose approaches, and flag risks early. Requirements Must-Have - Advanced Python — non-negotiable. Clean, tested, reusable code. Not just scripts that happen to work. - API design and implementation. Designing and maintaining REST APIs with clear contracts, versioning, and proper error handling. - Software engineering discipline. Testing, code review, Git, and the habits of someone who builds things that others can maintain. - Ability to work in a mixed-language codebase. The existing platform is Python/C#. You need to be comfortable reading it and understanding the integration points. Strong Plus - C#: You will also work with the existing platform, you need to write quality, clean, testable code in C#. - Familiarity with AWS services (Lambda, API Gateway, S3) or equivalent cloud infrastructure. - Experience with API specification tooling (OpenAPI/Swagger, Pydantic, etc.). - Exposure to Python packaging, dependency management, and CI pipelines. - Familiarity with constraint-solving tools such as OR-Tools, PuLP, or equivalent in a real-world setting. - Experience in a B2B SaaS, telecom, or logistics context where algorithmic correctness has real commercial stakes. - Comfort with performance profiling and optimization in Python. Benefits - Part of a team that is engaged and owning the things they do, highly trustable with direct commercial stakes. - Direct access to production systems, real data, and decision-makers — no layers of process between your work and its impact. - Exposure to cutting-edge technologies and large-scale global networks. - A role designed with trajectory in mind — the knowledge you build here is directly applicable to a senior technical execution path. - Competitive compensation - Pension Plan - Hybrid Working - 25 Days Holidays

Title: Software Engineer - Backend (all genders) Location: Berlin BE DE Job Description: Across Europe, fleets are under enormous pressure. Fuel costs are rising. Regulatory requirements are tightening. The shift to low-emission vehicles is accelerating. And yet around 70% of European businesses still manage their fleets manually, with spreadsheets, disconnected tools, and processes that were never built for this moment. Shiftmove exists to make this simple. We are a profitable B2B SaaS company and the fastest-growing fleet management platform in Europe, born from the merger of Avrios and Vimcar, and now serving tens of thousands of corporate customers across Germany, France, Spain, Switzerland, Poland, and beyond. Most recently, we acquired Optimum and Ocean in France, expanding our footprint and doubling down on one of Europe's largest fleet markets. Our AI-powered platform connects real-time vehicle data with intelligent software so that businesses can procure smarter, control costs, stay compliant, and lead the transition to cleaner mobility, all from one place. About the role We’re expanding the engineering team behind Avrios, one of our core products, and are looking for a Backend-focused Software Engineer (Java) to join us. As our Software Engineer, you will work on a product used by thousands of companies managing large vehicle fleets across Europe, and solving challenges around scale, automation, and AI-driven workflows. You will be part of a team where we own topics end-to-end, think critically about solutions, and work closely with Product & Design (as well as our customers) to build features with real impact. What you'll own - End-to-End Feature Ownership: Design, build, test, and ship production-grade features across backend (and supporting frontend), owning the full lifecycle from idea to release, including initiatives such as LLM-based document processing and OEM cloud integrations. - Problem-Driven Development: Understand customer and business problems deeply and translate them into effective, scalable technical solutions. - Product Collaboration: Work closely with Product Managers and Designers to shape features, challenge assumptions, and improve outcomes for users. - Engineering Decision-Making: Propose solutions, evaluate trade-offs, and contribute to technical decisions through structured discussions. - Reliable Delivery & System Improvement: Deliver features in a high-frequency release environment while continuously improving system stability and reducing technical debt. - Knowledge Sharing: Contribute to team learning by sharing knowledge and improving engineering practices. What you need to succeed - Engineering Foundation: Strong CS fundamentals with experience building production systems in Java - Problem Solving & Trade-offs: Think in first principles and balance speed, scalability, and complexity effectively - Ownership & Execution: Drive work independently from idea to production and deliver in fast-paced environments - Product Awareness: Understand user needs and business impact behind features - Learning Agility: Learn quickly, ask questions, and adapt to complex systems - Pragmatic Mindset: Make sensible decisions, prioritise effectively, and focus on delivering value over perfection - Collaborative mindset: While this is a backend-focused role, we value engineers who are happy to collaborate across the stack and support frontend topics when needed. What the First 6 Months Might Look Like - Months 1 to 2: Get into our products and ways of working. - Months 3 to 4: Start owning topics, contribute to clearly defined problems, and provide feedback and new perspectives. - Months 5 to 6: You’re fully on board. Own your topics, drive them forward, and become a trusted partner for your stakeholders. Our tech stack - Backend: Java, Spring Boot - Front-end: Angular, Typescript, NGXS, RXJS and Storybook - CI/CD: AWS CodePipeline/CodeBuild - Cloud: Amazon Web Services - AI: TensorFlow, Python, SpringAI, Gemini Why join us? - Build products with real-world impact: We solve complex, everyday problems for thousands of businesses across Europe, replacing manual, fragmented fleet operations with data-driven, intelligent solutions people truly rely on. - Scale something meaningful: We’re a profitable, PE-backed scale-up with strong fundamentals and a clear ambition (1M vehicles by 2027), offering a rare mix of stability, ownership, and pace. - Work in a truly international, collaborative environment: With 40+ nationalities, English as our working language, and teams across Europe, collaboration and shared ownership are part of how we work every day. - Grow with autonomy and trust: We invest heavily in product, data, and people – giving you the space to take responsibility, contribute ideas, challenge others, and do your best work while helping shape how we scale.. Benefits - Vacation: 30 days - Workation: Up to 12 weeks per year working remotely from anywhere in the world - Dog-friendly office: Because furry coworkers make everything better! - Development: €2,000 annual budget for personal and professional development - Main benefits: Urban Sports Club membership, Hrmony subscription, JobRad, or a subsidy for a BVG ticket - Wellbeing: 1 Mental Health Day + Access to nilo.health - For foodies: Free lunch once per week, biweekly company breakfast, and 24/7 available drinks & snacks Admin info - Contract type: Permanent, full-time - Location: Berlin-based or Zurich-based (or willing to relocate, as we value regular in-person collaboration within our hybrid setup) - Work model: Hybrid with 2 days in the office - Visa: We support visa applications where applicable We mean it: With over 40 nationalities, we are united by our dedication and a shared belief in our purpose: to simplify mobility operations for businesses. Different backgrounds, career paths, and perspectives are what make the work better. What we care about is simple: people who take responsibility, make it happen, and care deeply about the work. If you're unsure whether you fit, apply anyway. And if you

Role Description ELEKS is looking for a Senior Python + Go Developer in Eastern Europe or Argentina. Our client is one of the leading companies in robotic AI software, powering the world’s largest fleet of autonomous mobile robots (AMRs) operating in commercial public spaces. These robots are transforming industrial cleaning and e-commerce by solving real-world challenges - and you’ll have the opportunity to contribute to this innovative project. Qualifications - Strong experience with Python and Golang, including developing microservices and backend services - Hands-on experience with BigQuery, including configuration and integration - Experience with large-scale data processing solutions using Apache Beam and Google Cloud Dataflow - Strong understanding and hands-on experience with RESTful API design and development - Practical experience working with Google Cloud Platform (GCP) - Experience working with cloud-native architectures, distributed systems, and service integrations - Hands-on experience with Infrastructure as Code (IaC) using Pulumi and TypeScript - Proven ability to test, debug, and troubleshoot distributed systems - Upper-Intermediate level of English or higher (written and spoken) Requirements - Design, develop, and maintain Python- and Go-based microservices for customer data ingestion and processing - Build and integrate backend services with BigQuery and other cloud-based data platforms - Design, implement, and maintain REST APIs and service integrations - Develop and optimize scalable data processing solutions in a cloud environment - Test, debug, troubleshoot, and improve the reliability of distributed systems - Analyze requirements, review technical designs, and estimate implementation efforts following project methodologies (Agile, Waterfall, etc.) - Proactively identify opportunities for code refactoring, performance optimization, and system improvements - Support less experienced developers through knowledge sharing, mentoring, and technical guidance - Stay up to date with modern technologies and software engineering best practices Benefits - Close cooperation with a customer - Challenging tasks - Competence development - Team of professionals - Dynamic environment with a low level of bureaucracy