Work I take on

Parsing posts by ticker in real time, scoring sentiment and relevance, filtering out spam and bots, publishing signals to a channel. Exchange API for backtesting strategies.

PythonFastAPIPostgreSQLCeleryRedisNLPTelegram API

Connecting brokerage accounts, consolidating positions into one view, computing risk metrics (VaR, Sharpe ratio, maximum drawdown) and alerting when limits are breached.

Node.jsNestJSReactPostgreSQLWebSocketDocker

Collecting quotes from dozens of exchanges in parallel, finding arbitrage chains between pairs, visualising them on a dashboard. The real work is in the network layer and caching, to hold latency down.

GoWebSocketRedisVue.jsInfluxDB

Income and expense tracking, ledger entries and tax returns, bank statement import, filing. Multi-currency and reconciliation.

PythonDjangoPostgreSQLCeleryReactDocker

End-to-end path from lead to deal: event-driven email, call recording and attachment, task assignment, stage analytics. Configurable funnel stages.

PHPLaravelVue.jsPostgreSQLRedisTwilioSendGrid

Property management, map display, virtual tour attachment, automatic listing publication to marketplaces. Role model for agents and clients.

Node.jsExpressReactPostgreSQLMapboxDocker

A programme several levels deep, reward calculation, payment gateway integration, a participant dashboard with an accrual history.

PythonFastAPIReactPostgreSQLWebSocket

Medical history, prescriptions, test results; exchange with laboratory systems; a strict audit trail on every access. Privacy requirements drive the architecture, not the other way round.

JavaSpring BootAngularPostgreSQLKeycloakKubernetes

Readings collected from consumer devices, trend charts, alerts to the physician on critical deviations, a patient mobile app.

Node.jsNestJSReact NativePostgreSQLMQTTFirebase

Online consultations over video, scheduling with calendar sync, payment, chat during the session.

PythonDjangoReactWebRTCPostgreSQLRedis

A dispatcher map of the fleet, routing that accounts for load dimensions and traffic, automatic delivery status notifications to the client.

Node.jsExpressReactPostgreSQLOSRMRedis

Receiving, put-away and order picking; reader integration, automatic stock updates, support for several warehouses.

C#.NETAngularMSSQLSignalR

Forecasting from sales history, seasonality and promotions; automatic supplier orders on threshold. The hard part is the quality of the source data.

PythonFastAPIReactPostgreSQLAirflow

Sorting incoming tickets by topic and priority, suggesting a ready answer to the operator, an interface for labelling new data and retraining.

PythonTransformersFastAPIReactPostgreSQLMLflow

A hybrid of collaborative and content-based filtering using history, ratings and categories; updating recommendations without rebuilding the whole model.

PythonTensorFlowNode.jsReactPostgreSQLRedis

Removing outliers and false triggers before data reaches trading algorithms, with an adaptive threshold based on a wavelet transform.

PythonNumPySciPyFastAPIInfluxDBGrafana

Selecting material and tests to match the learner level, estimating knowledge from response models, a personal course path.

PythonDjangoReactPostgreSQLCelery

Running an exam with identity verification and flagging of suspicious behaviour, session recording, automatic first-pass review.

Node.jsNestJSReactWebRTCPostgreSQLS3

An editor where a course is assembled from video, text, tests and assignments; ordering and access rules, export to a standard format.

TypeScriptReactReduxNode.jsPostgreSQLS3

Seller dashboards, catalogue and orders, payment; syncing stock and documents with the accounting system. The difficulty is usually in the exchange, not the storefront.

PHPLaravelVue.jsMySQLRabbitMQDocker

Purchase history, bonus calculation, individual discounts, exchange with point-of-sale software, push notifications in a mobile app.

Node.jsNestJSReact NativePostgreSQLRedisKafka

A visual block editor, style and responsiveness controls, a template system, export to clean HTML and publishing.

ReactReduxNode.jsMongoDBS3

Pulling data from several sources, building charts, scheduled delivery of finished reports, a dashboard with filters.

PythonFastAPIReactPostgreSQLpandasCelery

A tool for moving from a relational to a document store: building the structures, incremental sync, integrity checks.

GoPostgreSQLMongoDBKafka

Metric collection, a dashboard, messenger alerts on threshold breaches, escalation to the on-call engineer.

PythonReactPrometheusGrafanaRedis

Replacing an outdated framework module by module, running both generations of code side by side, moving functionality in parts. This is my main territory.

AngularJSAngularTypeScriptRxJSWebpack

Splitting the backend along responsibility boundaries, extracting the critical parts into separate services, setting up build, delivery and observability.

GoJavaDockerKubernetesPostgreSQLKafka

Moving schema and data, porting stored procedures, tuning indexes and queries to acceptable performance.

PL/SQLPL/pgSQLPythonPostgreSQL

Daily loads from the accounting system, the website and the CRM, transformation, reporting marts. The real work is agreeing what each field means across sources.

PythonAirflowdbtSQLS3

Bringing metrics from different systems onto one screen, period filters, export, automatic refresh.

Node.jsReactPostgreSQLRedisWebSocket

Creating experiments, assigning users, collecting conversions, computing statistical significance. The main job is preventing a premature conclusion.

PythonFastAPIReactPostgreSQLRedis

Voice message recognition, task and reminder creation, calendar and to-do sync, button-driven control.

PythonFastAPIPostgreSQLRedisGoogle API

Answering common questions, collecting contacts, escalating complex requests to a human along with the conversation history. Trained on the company knowledge base.

Node.jsReactRedisHelpdesk API

Telephony integration, a voice menu, personalised messages, collection of call outcomes.

PythonNode.jsPostgreSQLTTSWebSocket

News, articles and media in several languages, versioning, editor and moderator roles, scheduled publishing, full-text search.

PHPSymfonyReactPostgreSQLElasticsearchDocker

Storing scans and PDFs, extracting text, tagging, fast full-text search, access control.

PythonDjangoReactPostgreSQLElasticsearchOCR