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revup consulting

Senior Backend Engineer – Payments Infrastructure & Scale

Senior backend engineer at revup consulting in Singapore who designs and scales high-volume, multi-currency payment-processing systems, integrating with banks to enable new payment rails. Day to day involves owning services, mentoring engineers, reviewing code, and ensuring security and regulatory compliance, using Java, Go, and Python.

Java Python Rails Regulatory Compliance

Senior Java Backend Developer

Senior Java Backend Developer at NETS (Singapore's electronic payments network) designing and maintaining high-volume payment transaction systems and gateway integrations. Day to day: building secure REST APIs and event-driven microservices, tuning MySQL, load testing, and supporting CI/CD and production incident resolution.

API CI/CD DevOps E-commerce Event Driven Architecture +13 skills

PT HM Sampoerna Tbk.

Senior Backend Engineer - AWS/Python for IoT & AI Platform

Senior backend engineer building scalable Python services and AWS-backed microservices for PT HM Sampoerna's IoT platform: designing APIs, real-time data processing, security, and delivery pipelines, plus exploring AI-enabled improvements with governance and security guardrails.

AI API AWS Microservices Python

Senior Backend Engineer - Recommender Systems & Platform

Shopee is hiring a senior backend engineer in Indonesia to build and optimize its core recommendation systems — tuning online serving engines, recall and ranking modules, and data pipelines, while abstracting reusable components into a centralized recommendation platform.

Data Pipelines Recommendation Systems

Senior Backend Engineer - Recommendation

Senior backend engineer at Shopee in Indonesia who designs and develops the core backend recommendation systems — optimizing online serving engines, recall/ranking modules, and offline data pipelines — while building reusable components for a centralized recommendation platform.

Data Pipelines Recommendation Systems

Senior Backend Engineer (Java)

Shopee is hiring a Senior Backend Engineer (Java) in Indonesia to design and build backend services for large-scale data platforms — data development, scheduling, data assets, and analytics — with a focus on scalability, stability, performance optimization, and troubleshooting distributed systems.

Analytics Distributed Systems

Senior Java Engineer: AI-Driven Backend & APIs

New AfricaSenior

Senior Java Engineer developing backend services and REST APIs using Java, Spring, and Kotlin within an agile environment for international clients.

Agile API CI/CD Java JavaScript +3 skills

Company.info Nederland

Senior Java Backend Engineer – Event-Driven & Cloud

New HybridEuropeContractSenior

Six-month freelance Senior Backend Engineer role in Amsterdam (hybrid, 2 days on-site): design, build and operate production-grade Java/Kotlin services on AWS and Kubernetes, implementing event-driven workflows and observability for onboarding, billing and identity systems, integrating with Keycloak, Salesforce, SAP and a billing platform.

AWS Event Driven Architecture Java Keycloak Kotlin +4 skills

Amaris Consulting

Senior Backend Software Engineer

New North AmericaSenior

Senior Backend Software Engineer designing and building scalable cloud-based services for healthcare and scientific technologies. Core responsibilities include developing microservices using Java and Spring Boot, managing relational databases like PostgreSQL, and leveraging AI-assisted tools in an Agile environment.

Agile AI API AWS Bioinformatics +11 skills

90K – 90K CAD

Senior backend engineer: remote, build scalable apis

New RemoteAfricaSenior

Placements24 is hiring a Senior Backend Engineer for a fully remote team to design, develop, and maintain scalable server-side applications and core services. The role calls for Python, Java, Go, or Node.js with PostgreSQL or MongoDB, plus RESTful APIs, microservices, and cloud/container technologies.

API Cloud Java Microservices MongoDB +4 skills

IQbusiness South Africa

Senior backend engineer - node.js & java (fintech)

New AfricaSenior

IQbusiness South Africa is hiring a senior backend engineer to design and enhance scalable banking and payment platforms in a fintech environment, focusing on data engineering, ETL, and API-rich services. The core stack is Node.js and Java with SQL/NoSQL databases, REST/GraphQL APIs, and Kafka or RabbitMQ messaging.

API CI/CD Data Engineering ETL Fintech +5 skills

Colossus Technologies Group

Senior Software Engineer - AI Cloud Backend (On Site)

New North AmericaSenior

On-site senior engineer role in Cedar Rapids, IA: design, build, and maintain production-grade applications, developing scalable backend systems, APIs, and integrations with cloud deployment and AI/LLM integrations at the core, while collaborating with cross-functional teams.

AI API Cloud LLM

Toyota North America

Senior Software Engineer: Build Scalable Backend & UI

New North AmericaSenior

Senior Software Engineer at Toyota Financial Services in Plano, TX, owning features end-to-end across backend and frontend for dealer and consumer digital platforms, including architecture decisions. Core stack: Java/Spring Boot, AWS, and React/Next.js/Vue.

AWS Java Next.js React Spring +1 skills

BeaconFire Inc.

Senior Go Engineer: Identity Security SDK & Backend

New North AmericaSenior

Senior Go engineer at BeaconFire who designs and implements a native Go Identity SDK for client identity verification and security-header injection, contributes to the Envoy/Go service mesh runtime, benchmarks against a legacy Java library, and writes migration and onboarding documentation.

Senior Founding Backend Engineer - Low-Latency, Scalable Systems

New North AmericaSenior

Arbor AI, an early-stage AI startup in Mountain View, is hiring a founding backend engineer to build low-latency, scalable serving and delivery systems powering monetization. The role offers end-to-end ownership from design to rollout in a small in-office team as one of the first ten employees.

Senior Backend Engineer - AI HealthTech, Scale & Ownership

New HybridNorth AmericaSenior

Senior Backend Engineer at Albert Bow will scale the core backend systems of an AI-powered clinical review platform, owning projects end-to-end, designing fault-tolerant services, and mentoring engineers on a small team. The role is hybrid in New York City (4 days/week in office); visa sponsorship is not available.

Hybrid Senior Backend Engineer – AI & Data Pipelines

New HybridNorth AmericaSenior

Oscar is hiring a senior backend engineer to architect high-concurrency microservices, data pipelines, and compute orchestration that link physics-based simulation engines with AI/ML workflows for global enterprise clients. Day to day involves system design, building scalable cloud pipelines, and applying strong security and CI/CD practices in a hybrid role.

AI CI/CD Cloud Data Pipelines Machine Learning +1 skills

Senior Software Engineer, Backend - SIG

New North AmericaContractSenior

Senior backend engineer on Anduril's Systems Integrity Group building services and APIs that power simulation, digital twin validation, and V&V automation for shipbuilding factories. Day-to-day work spans distributed backend systems, databases, event-driven pipelines, and edge/cloud deployment using Python/Go/Java/Rust, PostgreSQL/NoSQL, Docker/Kubernetes, and cloud platforms.

AI API Api Design Assembly Automation +42 skills

191K – 253K $

Senior Backend Software Engineer (NYC)

New North AmericaFull-timeSenior

Senior backend engineer building the Java and Go services, APIs, and data stores behind a high-volume office-lunch food-logistics operation in NYC. Day-to-day work centers on distributed systems, routing/optimization, reliability, and automation, onsite five days a week in New York City.

API Automation AWS Azure CI/CD +15 skills

176K – 242K $

United States Digital Space LLC

Senior Backend Software Engineer (APIs)

New HybridNorth AmericaContractSenior

Senior backend engineer on the Security Products Console team at an edge cloud platform provider, designing, building, and owning public-facing Go APIs for Next-Gen WAF, DDoS protection, and bot management products. Day-to-day: design docs, large-scale Go services, REST API design, on-call, and heavy daily use of AI coding agents.

Agile AI API Api Design CI/CD +11 skills

181K – 217K $