Apache Flink Engineer

Kryptos Technologies Ltd

Charing Cross, United Kingdom

2 days ago

Role details

Contract type

Permanent contract

Employment type

Full-time (> 32 hours)

Working hours

Regular working hours

Languages

English

Job location

Charing Cross, United Kingdom

Tech stack

Java

Amazon Web Services (AWS)

Code Review

Continuous Integration

Fault Tolerance

Human-Computer Interaction

Identity and Access Management

Python

MongoDB

Performance Tuning

Cloud Services

Software Engineering

Data Streaming

Grafana

Amazon Web Services (AWS)

Cloudformation

Apache Flink

Kafka

Cloudwatch

Splunk

Job description

You will bring deep hands-on expertise in production Flink on AWS, working closely with a senior FT engineer and AWS stakeholders. A key part of the role is knowledge transfer through pairing, reviews and clear documentation so the capability can be supported and extended by FT., * Design and implement stateful stream-processing jobs in Apache Flink (primarily Java), to process user interaction events and produce near real-time outputs for downstream services.

Integrate Flink with Kafka/AWS MSK, S3 and the chosen online store (MongoDB/MongoDB Atlas).
Own streaming non-functional requirements: correctness, fault tolerance, checkpointing/recovery, backpressure handling, and performance tuning.
Define and implement production readiness: observability (metrics/logs/tracing), alerting, dashboards and runbooks.
Support CI/CD and infrastructure-as-code practices to deploy and operate Flink workloads safely in AWS.
Enable the team via knowledge transfer (pairing, design/code reviews, documentation and handover).

Requirements

Do you have experience in Splunk?, * Strong experience building and operating production Apache Flink applications (event-time concepts, windows/watermarks, state, checkpointing and fault tolerance).

Hands-on AWS experience operating streaming/data workloads (IAM, networking/VPC basics, deployment, observability and incident troubleshooting).
Experience integrating Flink with Kafka (including AWS MSK) and cloud services/storage (e.g., S3).
Highly proficient in Java and Python (production experience required).
Strong software engineering fundamentals: clean, maintainable code; pragmatic testing; effective code review.
Comfort mentoring/pairing with engineers to up-skill the team.

Desirable

Experience with Amazon Managed Service for Apache Flink and/or running Flink on EKS/ECS.
Experience with MongoDB or MongoDB Atlas for low-latency, online-serving use cases.
Infrastructure-as-code (CloudFormation) and modern observability tooling (CloudWatch, Grafana, OpenTelemetry, Splunk).