Senior Software Engineer building and scaling backend systems for Cognitiv's advertising solutions. Collaborating with teams to enhance product integrations and drive revenue impact.
Responsibilities
Build and maintain scalable, reliable backend systems that power integrations across multiple products.
Collaborate with cross-functional teams (Business Development, Product, Customer Success) to define requirements and deliver solutions that enable new business opportunities.
Dive deep into a large, multi-product codebase — debugging, optimizing, and improving backend performance.
Write clean, maintainable, and well-tested code with a strong focus on operational excellence.
Ensure backend systems are well-documented, observable, and resilient in production.
Identify opportunities to automate processes, improve performance, and enhance system reliability.
Requirements
You’re an experienced senior backend engineer who thrives in ambiguous, fast-paced environments.
You love exploring and improving complex systems — not afraid to jump into unfamiliar codebases.
You communicate clearly and collaborate effectively across technical and non-technical teams.
You care about code quality, testing, and operational excellence just as much as you care about shipping features.
You take ownership of your work and follow projects through from idea to production.
Bonus Points If You Have
Experience working on integrations or partner-facing systems.
Background in AdTech, MarTech, or Data Engineering.
Familiarity with CI/CD pipelines and monitoring tools (Grafana, Datadog, etc.).
Exposure to distributed systems, large-scale APIs, or event-driven architectures.
Fullstack Engineer PHP & Vue.js at MintCode Solutions developing modern web applications. Join a collaborative team focused on code quality and user experience in Haselünne, Germany.
Java Backend Developer involved in developing robust backend components for a CRM system at ADITO. Collaborating with cross - functional teams and integrating external services within a hybrid work environment.
Java Software Engineer at Wallee developing payment integration solutions with a focus on scalability and security. Collaborating in a hybrid work environment to drive innovation in fintech.
Software Engineer developing C# and Azure Cloud solutions for knowmad mood, a leader in digital transformation. Involved in DevOps practices and API design.
Senior AI - Driven Backend Engineer translating product needs into code at Trengo. Leading architectural evolution of PHP monolith into scalable microservices and focusing on high - speed execution.
Senior Backend Engineer developing secure, scalable backend services and APIs at Merkle. Collaborating closely with mobile engineering teams and influencing platform - wide architectural decisions.
Senior Software Engineer developing scalable web applications using React JS and Java for GEICO's Commissions Platform. Collaborating with cross - functional teams to enhance financial systems for commission calculations.
Senior Java Software Engineer developing a backend platform for pension administration within a small team. Involves complex backend systems and reusable solutions for high system complexity.
Rust Software Developer applying technical expertise to solve complex challenges for national defense. Collaborating with a passionate team to deliver mission - critical technology solutions.