Senior Full Stack Developer - AI Team

Sedna

LOCATION: LONDON #LI-HYBRID #LI-REMOTE   OUR TECH STACK: HTTPS://STACKSHARE.IO/COMPANIES/SEDNA    ABOUT SEDNA: Sedna is at the forefront of revolutionising global trade, serving as the North Star for businesses navigating the complexities of international commerce. Our AI-powered platform is designed to make global trade more efficient, transparent, and sustainable. As we continue to grow and innovate, we are looking for exceptional talent to join our journey and contribute to our mission of transforming global trade. You can find out more about us on our website: https://sedna.com/   ABOUT THE ROLE: Sedna is seeking a Senior Platform Engineer to join our dynamic Platform Engineering team. In this critical role, you will ensure the high availability, performance, and scalability of Sedna's SaaS solutions. Working at the intersection of development and operations, you will play a key role in automating our infrastructure, improving system reliability, and driving efficiency across our platforms.  Our services mostly run on AWS, with some systems running on Azure and GCP. Languages in use include Kotlin, Elixir, Java and Python. We use a broad range of technologies including Kubernetes, MySQL, PostgreSQL, Oracle, OpenSearch and Kafka. Our platforms are critical to global trade and are used by users across the world, 24 hours a day, 365 days a year. We process many millions of emails and other transactions each day, and our storage is at petabyte scale.    YOUR RESPONSIBILITIES: * Develop and maintain scalable, resilient cloud-based infrastructure using industry best practices. * Implement automation tools and frameworks for automatic code deployment and system management. * Monitor system performance, troubleshoot issues, and implement strategies to ensure high availability and minimal downtime. * Collaborate with development and product teams to enhance the scalability and efficiency of the application architecture. * Participate in on-call rotations, providing expert support for critical system incidents and ensuring rapid resolution. * Continuously evaluate and implement new technologies and tools to enhance system reliability and operational efficiency.   IN YOUR FIRST 90 DAYS, YOU CAN EXPECT: * You’ll be hands on from day one, working to make Sedna faster, more scalable, more efficient and more secure. * We’ll invest in getting you familiar with our platforms rapidly. You’ll pair with members of the platform engineering team, architects and developers to gain an in-depth understanding of how everything works. * We’ll help you build a full understanding of the environment in which we work and we’ll get you up to speed with our planning and roadmapping processes, so you can start influencing the direction of Platform Engineering   WHAT WE'RE LOOKING FOR: ESSENTIAL * Proven experience in SRE, DevOps, Platform Engineering or similar roles, operating and evolving production infrastructure at large scale, ideally within complex, distributed, or high-availability environments where uptime, security and data integrity are business-critical. * You've designed or significantly re-architected cloud infrastructure (not just maintained it), diagnosed and resolved production incidents under pressure, and can point to specific systems you've made more resilient, scalable, or cost-efficient. * Highly proficient with AWS - we use VPC, IAM, ELB/WAF, EC2, ECS, EKS, S3, Lambda, Step Functions, Glue, Kinesis, CloudWatch, CloudTrail, SageMaker, Bedrock, OpenSearch, RDS, ElastiCache SES, KMS and more. * Demonstrable experience with containerization technologies (Docker, Kubernetes), and infrastructure as code (IaC) tools (e.g., Terraform, Terragrunt, and Ansible). * Skilled in scripting and automation (e.g., Python, Bash, Javascript) and experience with CI/CD pipelines and practices. * A tenacious problem-solver with a proactive approach to identifying and resolving system bottlenecks and stability issues. * Excellent communicator, capable of working collaboratively across both technical and non-technical teams, being able to explain complex technical issues in clear, understandable terms. * Passionate about learning new technologies and continuously improving systems and processes. DESIRABLE * Experience in working in compliant environments (SOC2, ISO27001, ISO27701) * Experience in working with Azure, including MS Graph, and/or GCP * Understanding of information security concerns and demonstrable experience of working cross-functionally across organisations to ensure and improve security * Experience with Kotlin, Java or Elixir - the ability to read, debug and edit existing code is significantly more important than being able to write green-field code. * Exposure to advanced k8s ecosystem tooling, including Karpenter and cdk8s.   OUR VALUES: Finally, culture is important to us, so we also look for candidates who share our values: Stay Ahead, Stay Agile * We don’t just adapt-we anticipate change and act with confidence. * Curiosity, data, and customer insights help us stay ahead of the curve. * We embrace challenges as opportunities and remain resilient under pressure. * By staying open to new ideas and ways of working, we lead the future. Execute With Focus * We turn strategy into action, delivering measurable results that matter. * Every initiative counts-discipline and ownership drive business impact. * We make smart decisions with speed, balancing pace and precision. * Clear priorities keep us focused on what moves the needle. Work Together, Win Together * Collaboration is our superpower-we succeed as one team, internally and with customers. * We co-create solutions, seek feedback, and build the future of the OS together. * Strong relationships are built on trust, respect, and shared goals.  * By aligning across teams and with customers, we unlock greater impact.

Wireless Logic

WHAT WE’RE ALL ABOUT: Any company can tell you about how they are a multi award winning, market leading business and yes, we are both of those things in the world of IoT connectivity!  But we’re more than that. 🌍✨ Our mission? To make IoT management a breeze for any device, anywhere. With over 10 million IoT subscriptions active in 165 countries and direct partnerships with 50 mobile networks, we connect you to more than 750 networks worldwide, delivering unmatched value across the IoT connectivity chain. Innovation is in our DNA, and we have an insatiable hunger to ‘wow’! 🚀 While we may not always get it right, our drive to collaborate, innovate, and achieve top-notch customer satisfaction never wavers. We offer industry expertise, stellar service support, and the most flexible, resilient, and secure connectivity solutions on the market. Our expertise spans across various sectors, including industry, agriculture, healthcare, security, transport, utilities, and smart cities. IOT… A FANCY ACRONYM OR A SECRET CODE? The Internet of Things (IoT) is like the magical glue that keeps the world connected! 🌐✨ From ordering your favourite takeaway to the ANPR technology that helps you find a parking spot, IoT is everywhere—even if you don’t realize it. At Wireless Logic, we provide cutting-edge connectivity solutions and technologies to ensure a vast array of devices stay seamlessly connected. The Role — Interstellar Squad The Interstellar Squad owns a core part of our commercial platform: the billing run — a mission-critical, high-volume pipeline that turns large-scale usage data into timely, accurate invoices for customers worldwide. It's a technically rich domain: distributed data processing, event-driven workflows, financial correctness, and operational reliability at scale. We're looking for a Staff Software Engineer to set the technical direction for Interstellar, raise the engineering bar across the squad, and guide delivery of a platform that has to stay correct, predictable and scalable as the business grows. A central part of this role is leading the gradual modernisation of a mature platform into a set of focused, TypeScript-based domain services — using a strangler-fig approach to extract capabilities incrementally, keeping the existing system safe and our customers unaffected while we evolve the architecture. You'll report to an Engineering Manager and partner closely with the Product Manager, Delivery Manager and engineers in the squad, as well as peer Leads across the domain. You'll have the mandate to shape how we design, build and run our systems — and the responsibility to keep the team aligned behind that direction. This role is based in the UK to work alongside the local squad and a team in Poland. You will be expected to travel to our Poland offices at least once a quarter. Key Responsibilities * Set and communicate a clear technical vision for the squad's services, aligned with product and business objectives, and translate it into concrete near-term work * Lead the incremental decomposition of a mature platform into well-bounded, TypeScript / Node domain services using a strangler-fig pattern — defining seams, sequencing extractions, and protecting delivery and correctness throughout * Define and uphold engineering standards for code quality, testing, observability, and operational readiness across the squad — applied consistently to both legacy and new services * Own complex technical decisions end-to-end: articulate trade-offs, choose an approach, document it, and bring the team along * Drive architecture and system design for distributed, data-intensive billing workflows — simplifying where we can, investing where it pays off * Lead the design and implementation of SLIs and SLOs for squad-owned services (Grafana), and take ownership of their health and reliability in production * Guide CI/CD and delivery practices in collaboration with the squad (GitLab), keeping cycle time short and releases safe across both old and new components * Raise the bar on code review — provide thorough, growth-focused feedback and coach engineers to do the same * Mentor engineers at all levels, create clear growth paths and unblock them day to day; help the team build confidence in modern TypeScript/Node practices * Champion AI-assisted/agentic engineering (IDE agents, CLI tooling, reviews) — set norms for when and how to use it, keep humans accountable for correctness, and share practices with peer squads * Partner with Product and Delivery to shape roadmaps, size work honestly and manage technical debt with intent * Represent the squad in cross-domain technical forums and contribute to the wider engineering direction Key Experience & Skills Required * Proven experience leading the technical direction of a squad or product area, not only as an individual contributor * Deep, production-proven backend expertise in a modern, strongly-typed stack — ideally Node.js / NestJS / TypeScript and/or PHP 8.x / Symfony * Demonstrable experience modernising or decomposing a mature monolithic / legacy system into smaller services — comfortable with strangler-fig, anti-corruption layers, contract design, dual-write / shadow strategies, and incremental cut-overs * Strong background in distributed systems and event-driven / asynchronous processing (e.g. RabbitMQ, Kafka, SQS) * Experience designing and operating data-intensive, business-critical services where correctness, idempotency and recoverability matter * Strong command of PostgreSQL (query design, indexing, performance tuning); bonus for distributed/sharded setups (e.g. Citus) * Experience owning CI/CD pipelines and release strategy in a team setting (GitLab or equivalent) * Track record of defining and enforcing engineering standards — type safety, clean architecture, testing, observability * Practical experience with observability and SLO-driven operation of production services (metrics, tracing, logs; Grafana or similar) * Strong communication and stakeholder skills: can explain trade-offs to engineers, PMs and senior leadership clearly and honestly * Experience mentoring engineers and developing them over time * Sensible, hands-on exposure to AI-assisted development (e.g. Cursor, Claude Code, GitHub Copilot or similar) with a thoughtful view on where it helps, where it doesn't, and how to use it safely in a team context Preferred * Experience leading a PHP → TypeScript / Node transition (or equivalent cross-language modernisation) * Strong understanding of TypeScript at an architectural level: generics, decorators, dependency injection patterns and type system design * Experience with PHP / Symfony monorepos and shared library patterns * Background in billing, financial or metering/rating domains * Familiarity with AWS-based platforms (ECS, S3, Parameter Store, SES) * Experience evolving a team from an IT-delivery mindset toward a Product Operating Model * Exposure to projects involving LLMs or Machine Learning in a production context What Will Make You Shine at Wireless Logic * Leads with technical credibility — brings architectural confidence without becoming a bottleneck * Creates clarity — turns ambiguous domain problems into simple, well-structured decisions * Modernises pragmatically — knows when to extract a service, when to leave it, and how to keep the lights on while the architecture evolves * Executes through the team — balances writing code with enabling engineers to do their best work * Manages delivery pragmatically — breaks down problems, sequences work, communicates progress and risk early * Manages technical debt with intent — makes informed, defensible calls about when to refactor * Partners with Product — translates business outcomes into technical plans and back again * Coaches and grows people — gives direct, kind feedback and invests in the team's development * Models continuous learning — including thoughtful adoption of new tooling and AI-assisted workflows Why Come Work with Us? * The chance to join a creative, entrepreneurial company where bold ideas are celebrated * Full training, ongoing support, and the tools to help you thrive and grow in your role * A company with heart — we genuinely care about our people and make sure everyone feels valued, respected, and part of the team Overview of Interview Process * Tele Interview — Meet the people team * Online Technical Task * Behavioural Interview — Meet your hiring manager & Delivery Manager * Technical Interview - Meet Engineering Manager & a peer Tech Lead * Leadership Interview - Meet your leadership How We Work We've adopted a hybrid working approach to give flexibility on where and how we work. This role is based in the UK to work alongside the local squad and a team in Poland; you'll find out more about what this means for the role during the recruitment process. You will be expected to travel to our Poland offices at least once a quarter. #LI-Hybrid #LI-CC1 We know the world has changed, and we want to offer our employees the chance to collaborate at our unique office spaces, whilst enjoying the convenience of working from home. We've adopted a hybrid working approach to give more flexibility on where and how we work. You'll find out more about what this means for this role during the recruitment process, but we are currently excited to have our employees experience our office culture as much as possible.   Wireless Logic Group unites and brings people together. We accomplish this when we lead with a lens of diversity, equity, and inclusion in everything we do. As a global company that drives culture we aim to reflect the world’s diverse voices both internally and externally to ensure success in our mission.   By applying for this role, you are consenting for us to hold and process your data in compliance with the General Data Protection Regulations. If you have any questions or wish to exercise your right to access, erase or restrict the holding or processing of your data please contact us (recruitment@wirelesslogic.com) and we will respond to your query as soon as possible.

DATAPAO

At DATAPAO, data ignites passion, community fuels collaboration, and growth knows no bounds. We are a leading Data Engineering and AI consulting company backed by Databricks and recognized for our unmatched delivery standards and rapid growth. We have been named Databricks EMEA Emerging Business Partner of the Year (2024), achieved the Golden Tier status in the Databricks Partner Program, and made three consecutive appearances on the Financial Times FT1000 list. We are currently looking for a Senior Data Engineer to join us remotely in the UK as we plan to set up a hub in the UK in the following 6-12 months to enable our GTM strategy. You will work with our EMEA and US customers to help them solve their data engineering, ML, ML Ops, and cloud migration puzzles. "As a Data Engineer at DATAPAO, you will have the unique opportunity to push the boundaries of technology and lead the way in how data transforms the world. We work with customers who want to innovate and change their industries. So it never gets boring! Sorting out a complex technical puzzle, setting up a new data architecture from scratch, or guiding our customers through adopting the latest technologies is our routine here. Hence, we'd expect you to be more than just a (data) engineer. We'd expect you to breathe and live data, to thrive for knowledge and excellence, and to be keen to build something enduring and impactful for our customers. We'd expect you to be a (data) Paoneer!"  (Máté Gulyás, CEO) What will you do? As a Senior Data Engineer, you are expected to deliver (across industries) on some of our most complex projects - individually or by leading small delivery teams. Although we work for the biggest multinational companies where years-long behemoth projects are the norm, our projects are fast-paced, typically 2 to 4 months long. Most are delivered using Apache Spark/Databricks on AWS/Azure and require you to directly manage the customer relationship alone or in collaboration with a Project Manager. Additionally, at this seniority level, we expect you to compound your impact across the team and the organization - by supporting our pre-sales process, mentoring more junior engineers, and contributing to hiring best-in-class data talent. What does it take to fit the bill? Technical Expertise * You (ideally) have 5+ years of experience in Data Engineering, with a focus on cloud platforms (AWS, Azure, GCP); * You have a proven track record working with Databricks (PySpark, SQL, Delta Lake, Unity Catalog); * You have extensive experience in ETL/ELT development and data pipeline orchestration (e.g., Databricks Workflows, DLT, Airflow, ADF, Glue, and Step Functions.); * You’re proficient in SQL and Python, using them to transform and optimize data like a pro; * You know your way around CI/CD pipelines and Infrastructure as Code (Terraform, CloudFormation, or Bicep); * You’ve hands-on experience integrating Databricks with BI tools (Power BI, Tableau, Looker).  Consulting & Client-Facing Skills * Ideally, you bring a proven history in consulting, from scoping to gathering requirements, designing solutions, and communicating effectively with stakeholders. If you bring a product company background with you, that's also fine as long as you can show a good consulting mindset and desire to be customer-facing; * You’ve successfully delivered projects like Data Lakehouse buildouts and cloud data migrations; * You excel in explaining technical concepts to non-technical audiences and drive decision-making. Operational Readiness & Soft Skills * You’re (almost) ready to hit the ground running, immediately contributing to live client projects; * In a fast-paced consulting environment, where no two days are the same, flexibility and problem-solving comes naturally to you. Furthermore, resilience and thriving on challenges are essential traits in our industry; * Your communication skills are on point—whether you’re writing, speaking, or collaborating with stakeholders, you know how to keep everyone in the loop. WHAT DO WE OFFER? You'll have the rare opportunity to join DATAPAO at a time when you can still meaningfully impact our growth trajectory and organizational success. Furthermore, you’ll also get to spearhead our regional expansion. Surely, we know everyone needs a little something to do their best work. Here is a list of some other extras we offer:   * The chance to work remotely - as we don't have a physical office in the UK yet, we offer a fully remote setup for the time being. However, given our strong community emphasis, we'd expect you to spend one month in our Budapest hub during onboarding and visit the office for one week every quarter; * World-class educational benefits - there’s no shortage of learning opportunities at DATAPAO, meaning that you'll get access to Databricks' public and internal courses to learn all the tricks of Distributed Data Processing, MLOps, Apache Spark, Databricks, and Cloud Migration from the best. Additionally, we'll pay for various data & cloud certifications, you'll get dedicated time for learning during work hours, and access to our internal library;  * Flexible PTO days - we’re flexible with how many days you take off if that does not conflict with customer success and the work getting done; * 4 weeks of paternity leave - because we think it’s important for both parents to be there when it matters the most; * Employee Assistance Program (EAP) - life always happens! And we'd like to be there for you when it counts the most. Through EAP, we offer our employees access to psychology, financial, and legal consulting services via phone or in person; * Pension scheme enrollment and a comprehensive private health insurance plan - offered via our EOR (Employer of Record) provider, Remote.com. Remote will be your official employer in the UK for the foreseeable future until we establish our own legal entity in the UK; * Top-notch working equipment - working comfortably means working well. You will get a MacBook Pro and a sign-up bonus of 500 GBP gross (to be paid with your first payroll) to set up your home office or whatever else is needed to give your best; * The chance to make an impact in a high-transparency culture - open feedback and no politics are things we value a lot at DATAPAO. Additionally, you'll get the chance to work in the field of data & AI and shape the future of a rapidly growing tech company. IMPORTANT NOTE: Given that we are still sorting our ways out in the UK, this list will likely get an update in the following months, and we're also committed to growing it with us over time. The gross salary for this position ranges from 70.000 to 100.000 GBP/year, depending on your assessed seniority level during the selection process. Please note that currently we are unable to support transfer or offer full sponsorship for Skilled Worker visas as we’re just setting foot into the UK. WANT TO KNOW MORE ABOUT US? DATAPAO is a Data Engineering and AI company that covers the entire data transformation from architecture to implementation. Beyond delivering solutions, we also provide data and AI training and enablement. We are backed by Databricks - the creators of Apache Spark, and act as a delivery partner and training provider for them in Europe. Additionally, we are Microsoft Gold Partners in delivering cloud migration and data architecture on Azure. Our delivery partnerships enable us to work in a wide range of industries and with some of the most prominent global companies, such as Norsk-Hydro, Richter, Bayer, Schufa, GetYourGuide, TechnoAlpin, and Logically, to name just a few. As a training provider, we deliver onsite and online courses globally for Databricks and on our own. We have been teaching professionals at Apple, Amazon, Uber, Microsoft, T-Mobile, GE, Ericsson, and many more to improve their impact with data. For even more insights, check the links below: * Designing and Implementing a Real-time Data Lake with Dynamically Changing Schema (EN) by Máté Gulyás (2021, Spark AI Summit) * Productionising Machine Learning models (EN) by Máté Gulyás (2023, Mndwrk Event) * "Ha a data governance jól működik, az olyan, mint egy láthatatlan szupererő” (HU) by Máté Gulyás (2023, Com-Forth Zóna Podcast) You can also follow us on LinkedIn for all the good stuff or just hit our recruitment team at jobs@datapao.com We’re firm believers in scaling up a team without judgment or prejudice. What we really care about is working with the best people out there, no matter their background. And you should also not worry if you don't tick every box in the requirements. If you’re passionate about data and learning new things, you’ll fit right in, and we'd love to hear back from you. When we hear back from you, we'd like you to know that we are committed to your privacy and keeping your data safe. We do not share your data with any third parties (except the ones we use to run our recruitment process) and keep your application for two years unless you ask us otherwise. We use your data solely for recruitment purposes, such as letting you know about new career opportunities at DATAPAO and/or managing your application. But if you want to know more about how we store and manage your data, check our privacy policy.