Java developer

Seasoned backend craftsman with 9+ years of designing distributed, JVM-based systems for fintech and telecom domains. Alexei blends deep knowledge of Java 17, Kotlin, and Spring Boot with solid DDD and clean architecture practices. At T-Bank he led a refactor of a monolithic core into 34 cloud-native microservices, reducing release cycle from monthly to daily. He is fluent in performance tuning (JMH, Flight Recorder), containerisation (Docker, Kubernetes), and CI/CD pipelines on GitLab. Recent hobby project: high-throughput event gateway processing 250k msg/s on GraalVM. Alexei mentors four developers, speaks at JUG Moscow, and writes blog posts read by 6k subscribers. Holds Oracle Certified Professional Java SE 11 and AWS Solutions Architect Associate. Russian native, English C1. Available in two weeks, prefers hybrid or remote across CET+1. Soft skills: proactive risk communication, outcome ownership, and calm under production fire. Interviews prepared, references supplied on request. If you need someone to decompose legacy depth, accelerate delivery, and coach the team, Alexei will land running and leave the codebase healthier than he found it. Ask for case study on latency reduction. Enjoys functional programming meetups, contributes patches to Spring Native, and is currently exploring Rust for safe service extensions in his open-source sandbox daily.

Polyglot engineer with 7 years steering Java, Quarkus, and cloud technology to power high-volume e-commerce platforms in LATAM. Carlos combines solid computer-science fundamentals (BSc, USP) with pragmatic obsession for shipping value. At MercadoRápido he decomposed a 2-million LOC monolith, building a reactive checkout service that cut cart-to-order latency by 35 %. Strong on Java 21, Jakarta EE, Micronaut, Kafka, Redis, PostgreSQL, and Elasticsearch; certified Scrum Master and fluent in DevOps culture. He designs pipelines with GitHub Actions, Terraform, Azure, and Sonar, pushing multiple production deployments daily. Carlos leads guilds on observability, having rolled out OpenTelemetry traces that trimmed MTTR from hours to minutes. Community contributor to Quarkus extensions; conference talk at QCon São Paulo 2024 accepted. Portuguese native, English B2, Spanish conversational. Soft skills highlight empathy, data-driven negotiation, and storytelling to non-tech stakeholders. Enjoys pair programming, TDD, and hexagonal architecture. Outside work he coaches an under-12 robotics club and cycles centennial routes. Available remote across Americas; relocation to Europe possible Q4. Ask him about migrating 20 TB Oracle workload to cloud-native Yugabyte without downtime. If your roadmap demands resilient microservices, metrics-first culture, and a teammate who raises the bar, consider Carlos. He will be demoing his tracing dashboard at JavaOne this fall.

Architect-level developer with 11 years guiding Java ecosystems from banking mainframes to serverless fintech APIs. Vikram champions clarity in code and communication, translating volatile requirements into stable, testable modules. Recent lead at NeoPay India: designed an event-sourced ledger on Spring Cloud, Axon, and AWS Kinesis that settles 40 000 transactions per second with eventual consistency below 200 ms. He is comfortable profiling GC pauses, writing custom Gradle plugins, and orchestrating multi-region deployments via Terraform and AWS CDK. Certifications include Oracle OCP 17, CKAD, and TOGAF. Passionate about security; rolled out company-wide SAST+DAST pipeline and headed PCI-DSS audit with zero major findings. Mentors interns, runs internal Kotlin book club, and speaks at Bengaluru JUG. Tools he loves: Java 21, Kotlin, Scala, Vert.x, Apache Pulsar, MongoDB, Prometheus, Grafana. Soft skills: servant leadership, crisp risk logs, and cross-timezone facilitation. Outside laptops he plays classical guitar and practices mindfulness retreats. Indian citizen, English C2, Hindi native. Open to global remote or Singapore relocation. Notice period 30 days. Ask for whitepaper on cost savings from Lambda snapshotting. If your scale demands balanced engineering rigor and product urgency, Vikram will architect foundations that last beyond the next pivot. Expect lucid design docs delivered within forty-eight hours of ideation.

Solution focused Java developer with 8 years experience crafting logistics and IoT systems for DACH enterprises. Jonas thrives where low latency meets rock solid domain models. At FreightFlow AG he migrated a websocket tracking platform to reactive Spring WebFlux, slicing median response time from 600 ms to 95 ms and slashing AWS bill 40 %. Proficient in Java 21, Kotlin, Go, Reactor, Kafka Streams, PostgreSQL, DynamoDB, Docker, Helm, and GitOps on ArgoCD. He loves code quality: 92 % mutation test coverage, Sonar “A” rating for three consecutive releases. Holder of German Behördenprüfung for critical infrastructure and ITIL v4 foundation. Soft skills: design thinking facilitator, empathetic code reviewer, and public speaker (JUG Munich, Devoxx UK 2023). In his last squad he introduced Pact contract testing that eliminated weekly integration outages. German native, English C1, lives in Berlin, willing to work remotely across EU or onsite two days. Hobbies include home automation with Raspberry Pi, trail running, and brewing single origin coffee. Ask him for link to open-sourced logistics simulation engine. Ready to join within four weeks and keen to mentor juniors on reactive paradigms. Jonas blends pragmatism with innovation to drive features safely to production. Expect workshops on event-storming during his first sprint with you.

Full-stack leaning Java backend engineer with 6 years spearheading mobile money and agritech platforms across East Africa. David masters Spring Boot, Java 17, Angular, and Kotlin, delivering resilient APIs consumed by 10 million devices daily. At M-Pesa Lab he optimized a payment switch by rewriting concurrency hotspots, pushing throughput from 800 to 3 500 TPS while cutting CPU 30 %. He designs CI/CD with Jenkins, Ansible, and Kubernetes on GKE, and embeds quality via SonarQube gates and mutation testing. Certified Google Professional Cloud Architect and Oracle Java SE 11 Programmer. Passionate about XP practices: pair rotation, TDD, and trunk-based development. Cultural bridge between product and engineering, David facilitates story-mapping workshops yielding shared vocabulary and lean scope. Soft skills: growth mindset, active listening, and high-energy demos. Community: Nairobi JUG co-organizer, mentors high-school coding clubs, and authored open-source SMS gateway in Quarkus. English fluent, Swahili native; UTC+3 time zone. Available for remote or relocation to Netherlands. Notice 14 days. Ask him about designing offline-first Android clients with protobuf. If you desire sustainable velocity, observability by default, and optimistic leadership, David will amplify your team’s impact. Outside code, he photographs wildlife, hikes Mount Kenya, and plays saxophone in a jazz quartet every other weekend for fun.

Hands-on Java engineer turned engineering manager seeking individual contributor role to get closer to code again. Marko brings 12 years designing, building, and scaling payment gateways and fraud analytics across EU fintech startups. His toolbox: Java 21, Spring Boot 3, Kotlin, Gradle, Akka, Kafka, Cassandra, Redis, Docker, Kubernetes, and GitLab CI. At PayGuard he orchestrated migration from on-prem to AWS EKS, reducing downtime 99 .8 % and saving €1.2 M annually. He still commits daily, recently delivering a rule-engine DSL that cut fraud review time by 42 %. Marko cultivates psychological safety, having led 3 squads of 7 devs through double-digit growth, OKRs, and incident postmortems. Holds CKA, AWS DevOps Pro, and PSM II. Macedonian native, German B1, English C1, located in Vienna. Prefers hybrid Vienna or remote CET±2. Soft skills: strategic roadmap advising, data-driven prioritisation, and crisp architecture decision records. Expect coaching sessions on scaling teams and JVM internals. Hobbies: alpine climbing, board games, and restoring vintage keyboards. Available after 2-month garden leave starting June. Ask about his OSS library AsyncShield with 1.4k GitHub stars. Marko blends leadership insight with battle-tested coding chops to ship value fast. He is currently experimenting with GraalVM native-image to reduce cold starts in lambdas for heavy workloads.