Sr. Software Engineer II - (DSM Methodology Team)

Job Description

The Team
Cint Technology team is looking for a Senior Software Engineer to join the methodology team, which owns the core product customers interact with. This role is for a backend engineer who enjoys working on high-volume, performance-sensitive systems and complex technical challenges. The team works across two main areas: Recruitment, which consumes third-party survey responses and evaluates them with backend algorithms, and Lift, which is being migrated from HTTPS/API REST toward event-driven integrations. The broader platform is also moving from a legacy monolith toward a domain-based architecture.

What You Will Do
You will work on systems that are write-heavy, asynchronous, and critical to the customer experience. The product is Tier 1, so reliability, scalability, and performance are key.

Qualifications

What You Will Do

• Design, implement, scale, and maintain backend systems that process large volumes of data.
• Work on event-driven and API-based integrations.
• Contribute to migration efforts toward a more domain-based and scalable architecture.
• Build and optimize software for performance-sensitive workflows.
• Investigate technical problems and propose solutions together with the team.
• Collaborate closely with data science and engineering colleagues on technical solutions.
• Participate in a collaborative development model where work is shared rather than handled alone.

Qualifications

• 10+ years of backend software engineering experience, with strong technical depth.
• We’re technology agnostic, so, you're more than welcome to switching your main language (Python, Scala, C/C++, Haskell, Elixir, Go, Ruby) to Java (core language)
• Solid understanding of algorithms (HashTables, Maps, etc.), data structures (Anomaly Detection, Dynamic Routing, etc.), Big O notation, Architecture (event-drive-architecture).
• Familiarity with heavy data processing tools and technologies such as Spark, Apache ecosystem tools, Delta Lake, Parquet, Kafka, and Avro.
• Experience with Python and/or PySpark
• Experience building or maintaining complex, high-volume systems
• Experience with Docker, SQL, and NoSQL databases.
• Experience with REST APIs and event-driven integrations.
• Comfortable working in performance-oriented, production-critical environments with high-throughput & low talency systems

Soft Skills:

• Strong problem-solving skills and a proactive, collaborative working style.
• Ability to communicate well with engineers and data science partners.

Academic Background:

• Computer science, computer engineering or a related field is preferred.

Nice to Have

• Experience with AWS, GCP or other cloud providers
• Experience with Pandas.
• Experience with Spring framework and microservices.
• Experience working in large-scale data or analytics environments.

Additional Information

Our Values

Collaboration is our superpower

• We uncover rich perspectives across the world
• Success happens together
• We deliver across borders.

Innovation is in our blood

• We’re pioneers in our industry
• Our curiosity is insatiable
• We bring the best ideas to life.

We do what we say

• We’re accountable for our work and actions
• Excellence comes as standard
• We’re open, honest and kind, always.

We are caring

• We learn from each other’s experiences
• Stop and listen; every opinion matters
• We embrace diversity, equity and inclusion.

 

More About Cint

We’re proud to be recognised in Newsweek’s 2025 Global Top 100 Most Loved Workplaces®, reflecting our commitment to a culture of trust, respect, and employee growth.

In June 2021, Cint acquired Berlin-based GapFish – the world’s largest ISO certified online panel community in the DACH region – and in January 2022, completed the acquisition of US-based Lucid – a programmatic research technology platform that provides access to first-party survey data in over 110 countries.

Cint Group AB (publ), listed on Nasdaq Stockholm, this growth has made Cint a strong global platform with teams across its many global offices, including Stockholm, London, New York, New Orleans, Singapore, Tokyo and Sydney. (www.cint.