Senior Java Software Engineer

🕒 November 12, 2025

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Unifonic

WebsiteLinkedInAll Job Openings

501 - 1000 employees

Founded 2006

🤖 Artificial Intelligence

☁️ SaaS

📡 Telecommunications

💰 $125M Series B on 2021-09

Artificial Intelligence • SaaS • Telecommunications

Unifonic is a customer engagement platform powered by artificial intelligence, designed to facilitate personalized omnichannel communication. The company offers a variety of communication channels and applications, including SMS, Voice, WhatsApp, Push Notifications, and Webchat to enhance customer interactions across multiple industries. Unifonic focuses on improving marketing automation, IT and operations, and customer support by providing AI-powered tools and automated workflows, ensuring timely and efficient customer communication. Their solutions cater to industries such as retail, banking, healthcare, and logistics, providing integrations with popular platforms like Salesforce and Shopify. With over 25 billion messages sent and 5,000+ customers, Unifonic provides global connectivity and a seamless customer experience.

📋 Description

• Building and maintaining solutions that scale. • Serving millions of users every day. • Contributing to building and maintaining the policies, procedures, and technical assets in Unifonic’s cloud infrastructure. • Supporting various teams with a technical vision in the core areas of interest for Unifonic's products. • Supporting multi-cloud-based communication products, especially as an augmentation to the internal technology team and working with partners’ software development teams. • Working on cloud-based development and deployment, including the following: AWS (EC2, SQS, S3, RDS, Aurora). • Working closely with service delivery teams to support product deployments to the cloud. • Understanding and using Unifonic's technical architectures, tools, and techniques to build powerful, efficient, flexible, and scalable solutions. • Performing basic database administration, performance optimization, index optimization, writing advanced select queries, and replacing cursor usage with relational SQL. • Collaborating with product owners, scrum masters, and other developers to deliver a quality product using tools such as JIRA and Git.

🎯 Requirements

• Hands-on 5+ years of experience in developing complex projects, preferably in the communications domain by using Java (Spring Framework). • Hands-on experience in Web Development (HTML, CSS, JS). • Practical experience in queuing systems/message brokers like ActiveMQ, RabbitMQ, Kafka, Beanstalk, SQS, etc. • Practical experience with cache technologies such as Memcached, and Redis. • Experience coding in Python. • Solid experience in managing Linux servers and applications (Nginx, apache2, etc). • Proficiency in a Linux environment and in consuming and designing RESTful APIs. • Solid experience with full Software Development Lifecycle, Distributed Architectures (REST, SOAP, Queue-based), and Microservices Architecture. • Bachelor's degree in Engineering, Software, or a related discipline or the equivalent. • Familiarity with software project management tools similar to Agile, Maven, and Git. • Experienced with using cloud hosting technologies such as AWS. • Familiar with SaaS and PaaS integration architecture and applications. • General knowledge in telecommunications (SMSC, VOIP, SMPP, etc). • Excellent communication skills. • Strong problem-solving and analytical skills.

🏖️ Benefits

• Competitive salary and bonus. • Unifonic share scheme (we are all owners!). • 30 holiday days after the first anniversary. • Spend up to 10 weeks per year working from anywhere in the world! • Paid leave for new parents. • Linkedin learning license.