ProfileService.java

public List<ProfileDocument> searchByTechnology(String technology) throws Exception {

        SearchRequest searchRequest = new SearchRequest();
        SearchSourceBuilder searchSourceBuilder = new SearchSourceBuilder();

        QueryBuilder queryBuilder = QueryBuilders
                .boolQuery()
                .must(QueryBuilders
                        .matchQuery("technologies.name", technology));

        searchSourceBuilder.query(QueryBuilders
                .nestedQuery("technologies",
                        queryBuilder,
                        ScoreMode.Avg));

        searchRequest.source(searchSourceBuilder);

        SearchResponse response =
                client.search(searchRequest, RequestOptions.DEFAULT);

        return getSearchResult(response);
    }