Skills

Python Java MongoDB Splunk GitHub CI/CD Networking Windows apache AWS Kafka Grafana Flink

Job Specifications

Tasks

Apache Flink Engineer

Location: London

6months Contract

We are hiring an experienced Apache Flink Engineer (contract) to build and help operationalise the stream-processing components of a near real-time personalisation and recommender capability on AWS.

Role overview

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.

Responsibilities

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

Skills and experience

Essential

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).

Indicative technology stack

Java, Python

Apache Flink; Kafka / AWS MSK

AWS: IAM, VPC, S3, CloudWatch; plus a Flink runtime (managed service and/or EKS/ECS depending on solution)

MongoDB / MongoDB Atlas (online store)

CircleCI and IaC: GitHub; CloudFormation

About the Company

Kryptos Technologies Limited is a global technology, consulting and Professional IT services company serving various Industry Domains like Banking, Insurance,Telecom,Automotive, Media, Retail, Manufacturing,Mobile,Transportation &Logistics, Travel, Energy ,Oil & Gas and Public Sector. Kryptos offers integrated services that include Strategic consulting, outsourcing, Staffing, Professional, Managed, infrastructure and cloud services. Headquartered at London, United Kingdom Kryptos deliver outstanding impact on the reputation... Know more

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23-02-2026