Backend Software Engineer

At Intuition Machines, our security solutions are recognized and utilized by industry leaders across various sectors. One of our flagship products, the hCaptcha security suite, embodies our commitment to innovation and excellence. Our operational philosophy revolves around empowering small teams to achieve high agency and rapid iterations, with AI and Machine Learning driving our product offerings. Our globally distributed team is dedicated to building efficient systems that prioritize speed and reliability.As a Senior Backend Engineer within our Detection team, you will be vital in developing, supporting, and maintaining the essential tools and services of the hCaptcha application that focus on detecting and verifying user interactions. You will collaborate closely with Security and Machine Learning engineers to continuously enhance hCaptcha’s functionalities, utilizing programming languages like JavaScript and Go to tackle global user challenges.Your role will also encompass practicing DevSecOps, ensuring security implementations, monitoring, automation, and the management of production systems around your code. As a customer-centric organization, you will engage directly with both enterprise customers and startups, collaborating with our product, customer success, and sales teams.

Join us at Fever, the premier technology platform transforming culture and live entertainment worldwide!Our goal? To make culture and entertainment accessible to everyone. Utilizing our innovative technology and insights, we are changing the way individuals interact with live events. Each month, our platform captivates over 300 million users across more than 40 countries, empowering event creators through data and technology to innovate and expand their audience reach.Our achievements? We’ve collaborated with iconic brands such as Netflix, F.C. Barcelona, and Primavera Sound, delivering internationally awarded experiences backed by top global investors!We’re on the lookout for talented innovators who are ready to help shape the future of entertainment. Are you prepared to join us in this exciting journey?As part of our engineering team, you will support the development, enhancement, and maintenance of all Fever services, ensuring that more people can enjoy incredible experiences.

Join the Fintech Engineering team at PedidosYa, where you'll have the chance to play a pivotal role in the development of one of our fastest-growing products. This position allows you to build from the ground up, contributing to one of the company's most ambitious long-term strategic initiatives. We are looking for talented software engineers who are eager to tackle complex technical challenges and create financial solutions that enhance the experience for millions of users in a highly dynamic environment.Promote best practices in code quality to ensure scalability and flexibility.Develop microservices that meet our rigorous standards.Integrate both internal and external services, enhancing the user experience.Collaborate with the team to propose and implement new features and improvements.Work within a high-performance team to achieve defined goals.

About CookUnity:At CookUnity, we believe that food should be a source of nourishment, inspiration, and connection. Founded in 2018, we are the pioneering platform that links individuals with exceptional chefs, delivering over 50 million meals annually across the country. Our meals are fresh, ready-to-eat, and crafted with care and passion, bringing culinary excellence right to your home.But we’re not stopping there. CookUnity is evolving into a dynamic marketplace with a singular mission: empowering chefs to feed the world.If this mission resonates with you, then you’ve come to the right place.About the Team:Fraîche is CookUnity’s premium smart fridge solution for workplaces, offering fresh, chef-crafted meals, snacks, and beverages available 24/7 right in the office. Employees can explore a diverse menu on the Fraîche mobile app to unlock the IoT-enabled fridge and enjoy their meals without pre-ordering. As part of CookUnity’s B2B division, Fraîche is redefining the dining experience in workplaces, transforming how employees eat at work.We are looking for a Senior Backend / Platform Engineer with robust backend engineering experience and the capability to contribute to our mobile app (approximately 70% backend / 30% mobile). In this role, you will enhance our platform capabilities that power the Fraîche experience, including backend services developed with PHP and Symfony, data systems (PostgreSQL, Elasticsearch), message queues, Redis, and infrastructure operations. Additionally, you will contribute to the Fraîche mobile app (Flutter preferred, React Native acceptable) for both hardware-aware and user-facing features. If you are passionate about backend development, platform reliability, automation, and creating products that seamlessly connect the digital with the physical, this position is perfect for you!

Join Bancoli (https://bancoli.com), a forward-thinking fintech company driven by a team of passionate professionals committed to crafting solutions that make a significant impact. Our focus on collaboration and innovation allows us to create products that enhance lives, and we pride ourselves on working swiftly yet thoughtfully to ensure our contributions are meaningful.We are in search of a Senior Backend Engineer specializing in automation to enhance our diverse, globally distributed team. In this pivotal role, you will be key in developing secure, scalable, and user-friendly fintech products that cater to thousands of businesses worldwide. This position is entirely remote.Your contributions will involve driving the evolution of innovative, AI-enhanced software. You will work on optimizing our international value-moving products, such as predictive services and multi-currency payment systems, ensuring they meet the highest standards for safety, privacy, and performance.

Intuition Machines is at the forefront of leveraging AI/ML technology to develop cutting-edge enterprise security solutions, including our renowned hCaptcha security suite. With a global team dedicated to making a difference, we are committed to building systems that support hundreds of millions of users worldwide. Our operational philosophy emphasizes minimal overhead, agile teams, and swift iterations.As a Senior Backend Engineer, your primary focus will be on enhancing our core production code, which may involve working with distributed systems and optimizing machine learning pathways. You'll play a crucial role in refining our evolving systems, improving threat models, and advancing our CI/CD practices.Key Responsibilities:Design, develop, and sustain secure, scalable backend services and algorithms.Implement DevSecOps methodologies, including security protocols, monitoring, metrics, and automated alerts.Create clean, well-documented, production-ready code with comprehensive test coverage.Enhance engineering practices through code reviews, automation testing, and on-call support.Transform complex requirements into actionable sprint tasks while providing mentorship to team members.Qualifications:A minimum of 5 years of relevant experience in a similar engineering role.Proficiency in backend development using Python and at least one of the following: Golang, Rust, or C++.Experience with Kubernetes, metrics-driven deployments, containerization, and microservices architecture.Familiarity with monitoring and tracing solutions.Expertise in key-value stores and SQL databases, with a focus on performance optimization.Experience with high-traffic, low-latency distributed systems, including queue-first architecture and sharding.Strong architectural skills, encompassing requirement gathering, problem-solving, and recommendations.Preferred Qualifications:Desire to learn and work with various technologies such as Python, Golang, Redis, PostgreSQL, Kafka, RabbitMQ, Clickhouse, Kubernetes, Helm, AWS, Azure, and JavaScript.Understanding of security frameworks, attack vectors, botnets, OLAP at scale, and online/active learning systems.Interest or experience in AI/ML and blockchain technologies.What We Offer:A fully remote position with flexible working hours.An inspiring global team of professionals.Modern development and deployment workflows: ship early, ship often.High impact: significant user base, satisfied customers, rapid growth, and cutting-edge R&D.A flat organizational structure allowing direct interaction with customer teams.We are dedicated to promoting equality of opportunity and fostering an inclusive environment for all team members.Join us in revolutionizing cybersecurity, user privacy, and machine learning!

Position: Senior Backend Engineer (Node.js + AI Workflows)Location: Remote (Candidates must reside in Buenos Aires, Argentina)About Distro:• Distro is a forward-thinking fintech organization dedicated to pioneering AI-driven software solutions.• Our team culture fosters the use of AI to automate mundane tasks, empowering our engineers to concentrate on vital architecture and logic.Role Overview:• Spearhead and mentor AI agents in the development of our flagship products, dedicating approximately 75% of your time to this initiative.• Execute detailed backend engineering tasks and refine secure payment systems, allocating around 25% of your time to this critical function.• Serve as the orchestrator of an AI-enhanced development process, focusing on strategic initiatives rather than routine coding tasks.

ABOUT SQUIRESQUIRE is an innovative business management system tailored for barbers, shop owners, and their communities. Our mission is to empower artistry and independence without the burdens of business complexities. Through SQUIRE, we equip barbers at every stage with custom-branded tools and resources to attract and retain customers, streamline operations, and boost revenue.Established in 2015, SQUIRE is trusted by over 30,000 barbers in more than 5,000 shops across 1,000 cities globally. Our platform facilitates everything from seamless booking and shop openings to real-time earnings dashboards and fostering enduring customer relationships, enabling barbers to harmonize their artistic craft with their business aspirations.Discover more about us at getsquire.com or download the SQUIRE app on the App Store or Google Play.

About UsAt BriteCore, we are an innovative and progressive company dedicated to empowering Property & Casualty (P&C) insurers with state-of-the-art cloud-native technology that drives business growth and operational efficiency.Our comprehensive software platform is essential for our clients, enabling them to seamlessly manage policies, billing, and claims through an integrated core insurance solution that offers real-time analytics and digital portals for both agents and policyholders. While many still depend on outdated systems, we are at the forefront of the transition to modern cloud technology. With our unwavering commitment to continuous innovation, BriteCore consistently delivers new functionalities and improvements with a flexible and scalable insurance platform designed to adapt to the changing needs of insurers.We are dedicated to fostering an inclusive and collaborative workplace where team members are encouraged to voice their ideas, challenge conventional thinking, and develop both personally and professionally. Our remote team shares a common passion for revolutionizing the insurance industry and providing outstanding service.Join BriteCore and become part of a company that is defining the future of insurance technology. You will collaborate with skilled professionals and have the opportunity to make a significant impact. If you are ready to innovate and contribute to the evolution of insurance software, let’s build the future together.Position OverviewWe are expanding our team and seeking a Senior Python Backend Engineer to help shape the technological services for Property & Casualty (P&C) carriers. In this role, you will actively participate in modernizing and scaling critical platforms using Python and MySQL. This is a unique opportunity to work on cutting-edge AI technology that underpins P&C insurance operations, ensuring these platforms are dependable and future-ready.If you are passionate about solving intricate problems, excel in AI-driven environments, and possess a talent for developing secure and precise solutions for high-impact projects, we would love to hear from you.

About CookUnity:CookUnity was established in 2018 to revive the soul of food by connecting people with extraordinary chefs. Delivering 50 million meals annually, we prioritize fresh, ready-to-eat meals crafted with passion. Our innovative marketplace aims to empower chefs to share their culinary creations with the world.Join us on our mission to nourish the world through exceptional cuisine.About the Team:The Kitchen Tech Team is the backbone of CookUnity’s culinary technology innovations. We develop and maintain systems that enhance operational efficiency and quality. As part of the ChefOS Zone, we support the entire meal lifecycle—ensuring precise ingredient sourcing, nutritional data accuracy, and compliance with dietary preferences.Collaboration is key; we work closely with chefs, supply chains, and operations teams to integrate inventory management, order processing, and fulfillment systems. Our goal is to equip chefs with intuitive tools while maintaining efficiency and reliability in large-scale meal production.The Role:We are seeking a Staff Backend Engineer to join our dynamic team. In this position, you will design, build, and maintain scalable backend services that power our core recipe management functionalities. Collaborating with talented engineers, product managers, and designers, you will utilize Kotlin and Java, frameworks like Micronaut or Spring Boot, and integrate Temporal for workflow automation.This is an individual contributor (IC) role emphasizing backend architecture, performance, and scalability. If you thrive on solving complex challenges and optimizing workflows, we would love to hear from you.

Join us as a Senior Backend Engineer at The Mobile-First Company, where we revolutionize business software for the mobile era. Our mission is to empower businesses to operate seamlessly from their mobile devices.As a key member of our team, you'll collaborate directly with our CTO to shape the future of our backend systems and AI capabilities. Your work will enhance the performance and scalability of our applications.In this role, you will:Develop and optimize backend systems in collaboration with mobile engineers.Contribute to system design and CI/CD processes.Implement scalable backend solutions using technologies such as Kotlin, Java, or Python.Work with cloud services including AWS and Cloudflare.Be part of a fast-growing company that is already serving over 20,000 businesses daily!

Join Azumo as a passionate Backend Engineer, where you will play a pivotal role in developing and enhancing high-performance, scalable backend systems in the realms of AI, NLP, and conversational software.This is a fantastic opportunity for candidates residing in Latin America, as we aim to build a strong team of local engineers.In this role, you will collaborate with a dynamic team of innovative engineers dedicated to AI computing. If you have a passion for designing and developing scalable, high-performance backend infrastructures using GO (Golang), open-source frameworks, and modern cloud technologies, you will thrive here.Responsibilities:Design, develop, and test robust server features and APIs.Integrate existing applications with third-party systems.Assess various technological approaches to problem-solving.

Join Our Team as a Backend EngineerAt Silver, we're on the cutting edge of technology, and we invite you to be a part of our innovative journey. As a Backend Engineer, you will have the unique opportunity to develop and enhance our backend services, tackling complex technical challenges that significantly impact our users' experience. We're seeking dedicated professionals who possess a robust product sense and are committed to long-term success.Your Responsibilities:Design and implement essential functionalities for our mobile applications, collaborating closely with product managers, mobile developers, platform engineers, and fellow backend engineers.Refine and optimize existing systems by addressing bugs, enhancing resource efficiency, and ensuring scalability.Deliver production-ready code and features to users on a regular basis, following an incremental development approach.Create tools to enhance our development practices and streamline workflows.Engage in code reviews to elevate the quality of our codebase and product offerings.Take full ownership of your code once it's in production.Collaborate with our Customer Experience team to resolve user issues related to the app.Qualifications:Proven experience running distributed systems in a production environment.Strong cross-team collaboration skills; our environment thrives on cross-functional teamwork.A beginner’s mindset with a relentless drive for understanding.Ability to take ownership of problems and actively seek solutions.Eagerness to engage with and resolve open issues.A flexible approach to problem-solving, ready to tackle whatever challenges arise.Technical Skills:Proficiency in Java 17.Experience with Kubernetes, and observability tools such as Honeycomb, Grafana, and Sentry.Familiarity with CI/CD pipelines for automated merges and deployments.Interview Process:Initial Screening Interview with Silver.Technical Interview with Silver.Client Screening Interview.Take-Home Challenge.System Design Interview.Behavioral Interview.

The Payments Engineering team at Betsson Group is expanding, and we are in search of talented Backend Software Engineers specializing in .NET/C#!About UsProud sponsors of Boca Juniors and Racing Club, Betsson is a leading iGaming operator, delivering a diverse range of online gaming products across multiple markets through our own gaming platforms and various partner brands.As a member of our Engineering team, your primary focus will be on crafting an exceptional payment customer experience, enhancing our payment pages, and broadening the array of payment options available across our brands and markets. Join an international team of top industry professionals and immerse yourself in cutting-edge technologies while managing critical company responsibilities.Your Contributions Will Include:Designing, developing, and maintaining scalable and reliable server-side applications utilizing the .NET framework and related technologies.Collaborating with cross-functional teams, including front-end developers, product managers, and designers, to gather requirements and convert them into technical specifications.Creating and implementing efficient and secure RESTful APIs and microservices to support client applications and integrations.Demonstrating a strong understanding of object-oriented programming (OOP) principles and design patterns.

Role overview Delivery Hero seeks a Backend Software Engineer in Buenos Aires to help build and maintain the backbone of its online delivery platform. The position centers on creating scalable backend systems and working with colleagues across different teams. This role also involves contributing to the technical architecture that supports key services. What you will do Develop and maintain backend systems that power online delivery operations Collaborate with cross-functional teams to deliver new features and ongoing improvements Take part in architectural decisions for both new and existing backend solutions Support better user experiences by building reliable and efficient backend services Location This position is based in Buenos Aires.

At SenseOn, we are pioneering the future of security operations, where artificial intelligence not only assists security analysts but also leads in detection engineering. We are in search of a talented Security Engineer who can excel in two critical areas: crafting high-quality detection rules that thwart real-world adversaries today, and developing the infrastructure that will empower AI to autonomously create and refine these rules in the future.The threat landscape is evolving rapidly, with adversaries increasingly leveraging AI to enhance their attack methodologies, automate reconnaissance efforts, produce sophisticated phishing schemes at scale, and adapt their tactics faster than traditional detection mechanisms can keep pace. We require a professional who comprehends this emerging category of AI-driven attacks and can devise detection strategies tailored to identify unique signatures such as anomalous automation patterns, LLM-generated content in phishing campaigns, rapid and expansive enumeration, and AI-assisted lateral movement. To detect AI, one must think like AI.This role bridges the gap between analysis and development, requiring a versatile skill set that encompasses both domains.Key ResponsibilitiesDetection Engineering (Core Function)Develop and uphold detection rules within SenseOn's dual-engine architecture:Real-time streaming detections that are evaluated in milliseconds, authored in YAML and compiled into binary rulesBatch behavioral detections supported by parameterized ClickHouse SQL, operating on a seconds-to-minutes cycleCreate aggregations and materialized views in ClickHouse to establish statistical anomaly baselinesEnhance our query library for threat hunting with MITRE-mapped ClickHouse queries utilized daily by analystsAccurately map each rule to MITRE ATT&CK techniques and tactics, including sub-technique specificityInstrument your own rules: assess false positive rates, define confidence metrics, construct test datasets, and ensure the quality of deliverablesRefine detections based on real-world telemetry. Understanding the rationale behind rule activations is as essential as the activations themselvesAI-Driven Detection Platform (Strategic Mission)Broaden the capabilities of our existing LLM-driven rule writing engineDesign and establish pipelines for LLMs to propose detection rules based on threat intelligence, CVE disclosures, or analyst findings, with structured outputs, YAML validation, and human approval checkpointsCreate feedback loops: when a detection is triggered or results in a false positive, this feedback should inform and enhance future AI-generated rulesDefine prompt engineering and evaluation frameworks for detection generation, focusing on metrics such as Pass@k, FP/TP scoring, and MITRE alignment validationCollaborate with engineering to make the detection data model comprehensible to AI, including schemas, annotations, and contextual structures that LLMs can reliably process

Join GoFundMe as a Senior Software Engineer, where you'll be at the forefront of empowering people to help others. In this pivotal role, you'll design and implement scalable software solutions that enhance user experiences on our platform. You'll collaborate with cross-functional teams, lead technical discussions, and contribute to our mission of social good.

Role Overview GoFundMe is hiring a Senior Data Engineer in Buenos Aires, Argentina. This role focuses on building and maintaining the data systems that power the company’s crowdfunding platform. The Senior Data Engineer will help design, implement, and support data pipelines and infrastructure that drive key decisions across the business. What You Will Do Shape and refine data architecture to meet evolving business needs Design, build, and maintain data pipelines for reliable data flow Support data-driven decision-making by ensuring data quality and accessibility This work directly supports GoFundMe’s mission to empower people through crowdfunding.

Join a pioneering global technology group designed for the future, where exceptional professionals engage in high-stakes projects that define their careers. At qodea, you're not just tackling assignments; you're innovating solutions to challenges that have yet to be addressed.As a member of our elite team, you will collaborate with industry leaders such as Google, Snap, Diageo, PayPal, and Jaguar Land Rover, especially when faced with tight deadlines or when others have encountered obstacles. When a solution is imperative, our teams deliver.Forget mundane consultancy roles; here you will work at the intersection of technology, design, and human behavior, producing rapid, impactful results. This is work that leaves a legacy, and you'll take pride in sharing your accomplishments.Role OverviewWe are seeking a dynamic and skilled Senior Data Engineer to develop and sustain the data pipelines that fuel our cloud and AI solutions. You will manage large datasets, ensuring they are effectively processed and enriched for downstream applications, with a strong emphasis on reliability, scalability, and performance in a cloud-native context.As a Senior Data Engineer at qodea, you will:Create and oversee batch and real-time data pipelines to process product and consumer data.Execute data transformations for deduplication, entity resolution, and feature engineering.Enhance pipeline performance and guarantee high availability within GCP environments.Maintain metadata layers and embeddings for machine learning and personalization services.Ensure data quality through robust validation rules and automated monitoring.Collaborate closely with machine learning engineers to supply high-quality data for model training.Preferred Qualifications:Proven experience with Python, Java, or Scala for data processing.Expertise in BigQuery, SQL, and dbt for managing substantial datasets.Familiarity with various data structures and formats.A detail-oriented approach to data lifecycle management and schema design.Experience with streaming technologies such as Pub/Sub or Kafka.Additional Qualities:Familiarity with MLOps principles and model deployment.Experience in sectors such as fintech or e-commerce is a plus.What We Expect:We are establishing a top-tier delivery center in Buenos Aires and aim to attract the finest engineering talent in the region. We believe that the best results arise from in-person collaboration. We anticipate your presence in the office one to two days a week when not engaged in project work, fostering our culture and enabling spontaneous problem-solving. Your energy and involvement will be crucial in shaping our team dynamics.