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Senior Java backend developer joining a brand-new global platform that optimizes logistics and distribution processes. Day to day: building Java 21/Spring Boot microservices (Kafka, PostgreSQL, MongoDB, gRPC/OpenAPI), shaping architecture (DDD, hexagonal), and owning CI/CD with Jenkins plus production observability tooling.
Senior .NET backend developer at Sword Iberia designing and building modern REST/Minimal APIs with Clean Architecture on Azure. Daily work spans C#/.NET 8+, CQRS/MediatR, Dapper with SQL Server/Oracle, OAuth2/OIDC/Keycloak auth, TDD, Git and CI/CD. Offers 100% remote work, permanent contract and flexible hours.
Senior Java backend developer designing and evolving microservice-based backend solutions for a client's digital products, applying hexagonal architecture, DDD, event-driven messaging (Kafka/RabbitMQ) and API-first design with strong automated testing. 100% remote (Spain) with occasional on-site meetings in Madrid.
Senior Backend Engineer to design, build, and operate the backend services, APIs, data pipelines, and event-driven systems powering Avive's connected AED cardiac-arrest response platform, using Python, Django, PostgreSQL, Redis, Celery, and Elasticsearch. Remote role for candidates residing in the US or Canada.
A senior backend developer in Karachi who designs and owns Java-based microservices and core RESTful APIs, integrates with frontend teams, and optimizes performance of large-scale systems using Java, Spring Boot, and SOLID principles in an agile environment.
Senior backend developer at VALTX who designs, develops and deploys Java (21+) and Quarkus microservices, implements enterprise integration patterns with Apache Camel, ensures code quality through unit/integration/performance testing, and mentors junior developers. Hybrid role based in Miraflores, Peru.
Senior Software Engineer at CVector Energy Corp. who owns backend platform and AI infrastructure — time-series data systems, AI-assisted analytics, and scalable cloud pipelines — from the New York City office, collaborating with product, modeling, and frontend teams.
Senior engineer at Lambda building and scaling the distributed inference backend for its AI cloud — running cutting-edge models across tens of thousands of GPUs with a high-throughput, low-latency API and routing system. Core stack is Go or Python (Rust a plus), with Kubernetes, distributed systems, and real-time ML inference experience.
Senior/Staff backend engineer on the Platform Engineering team at Optimal Dynamics, building and scaling the core AWS infrastructure, CI/CD tooling, and security controls that let product teams ship quickly on a freight-logistics AI platform. Day to day spans Python/Django services, Terraform IaC, observability, and mentoring other engineers.
Senior backend/AI-infrastructure engineer at CVector, which builds real-time economic optimization and AI prediction software for energy and manufacturing plants. Day to day: evolving time-series data systems (PostgreSQL, TigerData), MQTT ingestion pipelines, AI evals/fine-tuning, and cloud infrastructure on AWS, from the NYC office 4 days/week.
Designs, builds, and maintains the backend services and cloud infrastructure for an autonomous trucking company's remote assistance platform, handling real-time data streaming, command processing, and communication between autonomous vehicles and human operators. Core stack: Go/Python, gRPC/protobuf, Redis, AWS, Docker/Kubernetes.
Senior Backend Software Engineer at Grow Therapy (mental-healthcare marketplace) designs, builds, and operates server-side services and APIs end to end — spanning provider search/booking, client activation, and insurance claims — with a focus on reliability, data quality, and A/B testing. Hybrid: 3 days/week onsite from NYC, SF, or Seattle hubs.
Senior backend engineer at Worldcoin who owns the World App backend architecture while staying hands-on, shipping mission-critical features across product teams and driving engineering best practices. Core stack is TypeScript and/or Rust on AWS, with a focus on programmable blockchains for finance, privacy, and digital identity.
Senior backend engineer on Tubi's Core Experience Backend team, building high-performance, disaster-resilient APIs and microservices in Elixir on Kubernetes for a free streaming service with 100M+ monthly users. Hybrid role based in San Francisco with two office days per week, plus an emphasis on AI-augmented development practices.
Carex Consulting Group is hiring a Senior Backend Software Engineer for a technology partner building an advanced engineering simulation platform. Day to day: designing scalable backend services and web APIs, building hybrid-cloud HPC infrastructure with Kubernetes and Terraform, and optimizing distributed compute workloads using Java, Python, or C++ on AWS.
Senior backend engineer building features across Salesforce's clouds (Marketing, Commerce, Sales, Service, Einstein, Slack, Heroku, etc.): designing and tuning multi-tenant APIs, handling large-scale cloud data with CI/CD and test-driven development, and using AI coding tools (Cursor, Claude, OpenAI API) and prompt engineering as a core part of the workflow.
Siteline is hiring a senior backend engineer to own critical infrastructure, shape APIs and data models, and scale the product for a growing customer base. The role blends architectural leadership with hands-on backend implementation on a small, collaborative team.
Ciklum is hiring a Senior Backend Engineer for a fully remote role based in Poland, joining a cross-functional squad building trust and fraud-detection backend systems. Day to day the engineer owns features from ideation to deployment using TypeScript, serverless and cloud-native patterns, collaborating with product, design, and data science teams.
Senior backend engineer who ships 0-to-1 features on LaraBench's core platform, owning architecture, quality via testing pipelines, and observability in a remote-first team. Core stack: Laravel, PHP 7+, MySQL on Kubernetes.
Builds enterprise-grade backend solutions at scale using Java and Spring Boot, collaborating across the full software development lifecycle. Requires deep experience with PL/SQL, AWS services, and CI/CD with Docker and microservices, plus strong stakeholder communication. This is a remote role.
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