Backend Software Engineer | IoT Solution for Logistic (Java / Kotlin / AWS)

About the ProjectLocation & Work ArrangementMust be based in Portugal and legally authorized to work in Portugal (no international remote work)English as primary working language with international teamAbout the ClientWe are exploring the possibility of building a Portugal based mid to senior engineering team for a leading DACH IoT Solution technology company operating in the logistics and supply chain digitalization sector. What makes them unique:End-to-end technology: In-house developed hardware and software for enterprise-grade asset tracking and fleet managementIndustry compliance: Long battery life and industry-approved firmware suitable for transportation of dangerous and hazardous goodsOperational focus: Technology designed for efficiency, safety, and sustainability in mission-critical logistics operationsAdvanced intelligence: Real-time data visibility and analytics providing live asset location, condition monitoring, ETA predictions, and business intelligenceThey serve major freight operators across Europe and North America.Your Key Focus AreasAs a Backend Software Engineer, you would join an interdisciplinary agile product team responsible for designing, implementing, and maintaining distributed backend services that process real-time data from IoT devices at global scale.You will work on:Building scalable backend services handling millions of data points dailyDesigning and implementing RESTful APIs for fleet management platformsDeveloping data processing pipelines for real-time asset trackingWorking with modern cloud-native technologies and microservices architectureCollaborate with your team to design, implement, test, deploy, and maintain new features and servicesActively participate in technical discussions around architecture, solutions, and technology choicesProactively identify improvements, tackle technical debt, and enhance documentationContinuously improve code quality and maintainabilityStay current with latest technologies and share knowledge with the teamAct as an onboarding buddy for new team membersParticipate in agile development activities (stand-ups, planning, demos, retrospectives)Your ExpertiseStrong experience with Kotlin or Java for backend developmentSolid knowledge of distributed systems architecture and design patternsProfessional experience with:SQL databases (PostgreSQL or similar)NoSQL databases (DynamoDB or similar)Message queuing systems (SQS, Apache Kafka)Publish/Subscribe patterns (SNS, Kafka)Good understanding of RESTful API design principlesExperience with Git version control and CI/CD pipelines (GitLab CI preferred)Knowledge of software testing methodologies (TDD encouraged)Familiarity with containerized workloads (Docker) and KubernetesLinux/Unix shell knowledge is a strong plusPHP experience is a plusGradle knowledge is a plusProfessional SkillsStrong conceptual and problem-solving abilitiesExperience working in agile/scrum environmentsGood algorithmic knowledgeExcellent written and verbal communication skills in English (working language)Self-organized and comfortable working independentlyTeam player with collaborative mindsetTechnical writing skills for documentationTechnology StackLanguages: Kotlin / Java / AngularMessaging: Apache Kafka, AWS SQSDatabases: DynamoDB, CockroachDB, PostgreSQLInfrastructure: Docker, KubernetesCI/CD: GitLab CICloud: AWS (primarily)CompensationCompetitive compensation package that exceeds Portuguese market rates, calibrated to your seniority and expertiseHybrid & flexible work: Work remotely from anywhere in Portugal or from our co-working office in LeiriaAnnual training budget: Invest in your growth with an allocated budget each year.Tech communities: Join a team that fosters knowledge sharing and mentorship.Loyalty rewards: Receive company-branded gifts on your work anniversaries.Modern office setup: Ergonomic and fully equipped workspace in Leiria.Additional office perks include free snacks, fresh fruits, tea and coffee, board games, a ping pong table, a spacious cafeteria, and free parking.Social events: monthly lunches, team buildings, company-wide events.Coverflex: A flexible benefit for expenses like education, childcare, and sports.About usStark & Partners bridges international companies with Portuguese talent, helping businesses launch and scale successfully in Portugal. We have built our company on a simple belief: when talented people have the right environment, amazing things happen. Today we're a growing team with a strong sense of community and one clear goal: making our clients' expansion to Portugal successful and bring more jobs to Portugal. Your Career MattersWe're not looking for people to fill seats – we're looking for talented individuals who want to build something meaningful. Bring your skills, ideas, and ambition. We'll provide the platform, support, and opportunities.How We Work✓ Trust over micromanagement – We hire great people and let them shine✓ Growth opportunities – Your development is our priority✓ Flat structure – No unnecessary hierarchies blocking your path✓ Diverse challenges – Work that keeps you learning and engaged✓ Supportive team – Colleagues who have your back✓ Real impact – See the results of your work every dayReady to grow with us? Apply today, and we’ll reach out to you after reviewing your profile!