Backend developer

Securitas

AWS Infrastructure Engineer Location: United Kingdom Purpose Design, build, and operate AWS infrastructure that underpins key platforms and services as the organisation continues its transition to cloud. Work as a hands-on AWS engineer, focused on delivering secure, scalable, and highly available environments. Take ownership of components of the migration and operation of business-critical platforms and services within AWS. Major Responsibilities * Design, build, and maintain AWS infrastructure using infrastructure-as-code principles * Support production and non-production environments with a focus on availability, performance, and security * Deliver backend infrastructure operations including server management, updates, storage, failover, and logging * Build and maintain core AWS services across compute, networking, storage, and identity (e.g. EC2, S3, VPC, IAM, RDS, CloudWatch) * Collaborate with application, DevOps, and security teams to deliver resilient cloud solutions * Integrate infrastructure with CI/CD pipelines to enable reliable, repeatable deployments * Implement monitoring, logging, alerting, and observability practices * Investigate incidents, contribute to root cause analysis, and drive continuous improvement * Support security, compliance, and audit requirements within cloud environments, including regulated or security-sensitive contexts * Work with cloud partners and vendors, including AWS and third parties, on architecture reviews and optimisation * Automate infrastructure provisioning and operational processes to reduce manual effort * Document infrastructure, standards, and operational processes * Primary working hours aligned to European time zones. Participation in a global on-call rotation. What Success Looks Like * Deliver stable, secure, and scalable AWS environments that support business-critical platforms * Contribute to the successful migration and operation of core business platforms and services in AWS * Maintain strong system availability and performance across production environments * Identify and resolve infrastructure issues proactively, improving reliability over time * Collaborate effectively with cross-functional teams to deliver consistent, high-quality solutions * Establish reliable and repeatable infrastructure practices Education * Degree or equivalent experience in Computer Science, Information Technology, or a related field Experience & Knowledge * Hands-on experience with AWS in production environments * Strong knowledge of core AWS services such as VPC, IAM, EC2, containers, storage, and monitoring * Experience with infrastructure-as-code tools (e.g. Terraform, AWS CDK, or similar) * Understanding of cloud networking, security, and identity management * Experience supporting highly available, business-critical systems * Familiarity with cloud migration initiatives * Experience integrating infrastructure with CI/CD pipelines and automation tooling * Exposure to containerised workloads or orchestration platforms (e.g. ECS, EKS) * Experience working within regulated or security-focused environments * Experience working with distributed teams * AWS certifications (e.g. Solutions Architect, SysOps Administrator) are beneficial Skills & Competencies * Strong problem-solving and troubleshooting skills * Clear communication across technical and non-technical teams * Collaborative approach to working with engineering, security, and operations * Ability to prioritise and manage workload effectively * Adaptability in a changing environment * Commitment to continuous learning and improvement Why Join Us Work on meaningful cloud transformation initiatives, helping to move critical platforms into AWS. Contribute to real-world infrastructure challenges while collaborating with experienced teams across the organisation. Develop AWS expertise, expand technical capability, and operate in an environment that values collaboration, learning, and practical problem solving. Our People Promise – Securitas Technology EVP Alongside the opportunity to work on modern AWS infrastructure, you’ll be part of an organisation that values people, growth, and purpose. We offer clear career pathways, growth opportunities, recognition for achievements, and a global, collaborative team. As part of our EVP, we offer: * Career pathways and growth opportunities * A global, values-driven team * Recognition for achievements * An inclusive, collaborative culture * Purposeful work that makes the world safer * Support for innovation and sustainability Securitas Technology is committed to diversity and is an equal opportunity employer; all qualified applicants are welcome.

Validio AB

Validio AB is a Stockholm-based software company providing a data quality and observability platform. The role is part of the Validation Engine team, responsible for backend services that read data from source systems (e.g. BigQuery, Snowflake, Kafka), run data validation logic, and report incidents to downstream systems. The employee will design, develop, test, and maintain backend components of this system. Main duties Design, develop, and maintain backend services in Rust and Go Develop and maintain SQL query generation logic across multiple database dialects (e.g. BigQuery, Snowflake, ClickHouse, Postgres) Define and maintain service contracts using Protocol Buffers and gRPC Build and maintain data source connectors, including schema introspection and authentication Diagnose and resolve production issues in distributed backend systems Write automated tests and maintain technical documentation for backend components Collaborate with Customer Success and Solutions Engineering teams to translate reported technical issues into engineering solutions Deploy and operate services using Kubernetes and related infrastructure tooling Qualifications University degree in Computer Science, Software Engineering, or equivalent professional experience Documented professional experience developing and maintaining production backend services in Rust or Go Strong working knowledge of SQL, including query optimization and execution plan analysis Experience with distributed systems and message-streaming technologies (e.g. Kafka) Experience with containerized deployment (Kubernetes) Professional proficiency in English

Hemnet

With over 40 million visits each month, you’ll be part of Sweden’s most popular property platform – and one of the world’s most admired real estate platforms. With access to vast amounts of data, you’ll have limitless opportunities to explore and create new features that enhance the experience for Sweden’s real estate agents, home buyers, and sellers. You’ll join a collaborative, cross-functional team where your unique perspective is truly valued. As a senior engineer, you’ll lead by example by crafting elegant code while driving architectural evolution, mentoring colleagues, and helping us build a modern, scalable platform. What you’ll do 💥 At Hemnet, we help millions of people navigate one of the biggest milestones of their lives: finding and shaping their home journey. Our team’s mission is to make that experience feel personal, inspiring, and seamless. We are looking for a collaborative backend engineer to help us build the real-time data pipelines and smart CRM integrations that deliver the right message to the right user at exactly the right time. You'll: * Build & Scale with Node.js: Design and evolve resilient backend services and APIs using Node.js, Nest.js, and GraphQL, keeping our platform fast and reliable. * Connect Our Systems: Lead the technical direction of our CRM and marketing automation integrations. You’ll ensure our data pipelines are secure, scalable, and built to last. * Bring Data to Life: Partner closely with our CRM and Marketing teams to turn user behavioral signals and segmentations into timely, meaningful automated messages. * Collaborate Across Disciplines: Act as a supportive technical partner for non-technical stakeholders, translating complex backend concepts into clear, shared ideas. * Grow Together: Lift the team around you through empathetic mentorship, open knowledge sharing, and contributing to a welcoming, continuous-learning engineering culture. Who we think you are 🤩 We know that excellent engineers come from all kinds of backgrounds. You don’t need to match a rigid checklist, but we think you’ll thrive in this role if: * You have a solid foundation in backend development, with deep experience in Node.js and framework ecoystems like Nest.js. * You enjoy the unique challenges of third-party integrations, API design, and event-driven data flows. * You care just as much about the people you work with as the code you write, you value clear communication, psychological safety and diverse perspectives. * Bonus points (but not required): You’ve worked with Ruby, or you’re curious about experimenting with modern AI tooling like Claude. I am your new manager 👋 Hi! My name is Staffan, and I’ll be your new manager. I’ve been at Hemnet since 2019 and since last year working as Engineering Manager for a domain called Consumers. Our teams are currently working on many new and important areas for Hemnet – including personalization and smarter search features (including several initiatives utilizing AI to deliver next level user experience). My leadership style is listening, transparent, accessible, and supportive, while also challenging you to take your next step. Hopefully, we’ll learn a lot from each other and have plenty of fun as we break new ground at Hemnet. As a team, we get things done; we know when and where value can be added, and we’re clear on our priorities. Why did I decide to join Hemnet? I was strongly drawn to the culture and atmosphere – a wonderful combination of kindness, inclusiveness, and helpfulness, paired with high ambitions and a strong drive forward. My impression is that the people and the workplace together create the perfect foundation for you to do the best work of your career. A Note on Inclusion 💚 At Hemnet, we believe that diversity in gender, sexual orientation, ability, neurodiversity, cultural background and life experience makes us stronger. We welcome applicants of all identities and backgrounds. We build better together. At Hemnet, we believe diverse teams write better code and build better products. Even if you don’t check every single box above, we encourage you to apply. We value potential, curiosity, and a willingness to learn just as much as past experience. Our friendly Hemnet culture fosters a dynamic, playful environment where every voice is valued. Here, you’ll join a welcoming team that encourages you to thrive and grow, working alongside passionate colleagues from around the world. An Office-First Culture 🙏 We believe in the power of connection and the importance of flexibility. Our central Stockholm office is our hub for collaboration three days a week, with two remote days to support your personal work-life balance. We prioritize a sustainable pace because we know our best work happens when we’re energized and inspired. Please note that we're unable to provide relocation assistance for this opportunity.